Merge remote-tracking branch 'origin/dev' into feat/custom-agents

# Conflicts:
#	src/agents/utils.test.ts
#	src/plugin-handlers/agent-config-handler.ts

src/agents/atlas/agent.ts

@@ -17,7 +17,6 @@ import type { AvailableAgent, AvailableSkill, AvailableCategory } from "../dynam
 import { buildCategorySkillsDelegationGuide } from "../dynamic-agent-prompt-builder"
 import type { CategoryConfig } from "../../config/schema"
 import { mergeCategories } from "../../shared/merge-categories"
-import { createAgentToolRestrictions } from "../../shared/permission-compat"
 
 import { getDefaultAtlasPrompt } from "./default"
 import { getGptAtlasPrompt } from "./gpt"
@@ -30,7 +29,7 @@ import {
   buildDecisionMatrix,
 } from "./prompt-section-builder"
 
-const MODE: AgentMode = "primary"
+const MODE: AgentMode = "all"
 
 export type AtlasPromptSource = "default" | "gpt" | "gemini"
 
@@ -100,11 +99,6 @@ function buildDynamicOrchestratorPrompt(ctx?: OrchestratorContext): string {
 }
 
 export function createAtlasAgent(ctx: OrchestratorContext): AgentConfig {
-  const restrictions = createAgentToolRestrictions([
-    "task",
-    "call_omo_agent",
-  ])
-
   const baseConfig = {
     description:
       "Orchestrates work via task() to complete ALL tasks in a todo list until fully done. (Atlas - OhMyOpenCode)",
@@ -113,7 +107,6 @@ export function createAtlasAgent(ctx: OrchestratorContext): AgentConfig {
     temperature: 0.1,
     prompt: buildDynamicOrchestratorPrompt(ctx),
     color: "#10B981",
-    ...restrictions,
   }
 
   return baseConfig as AgentConfig

src/agents/env-context.test.ts

@@ -0,0 +1,41 @@
+/// <reference types="bun-types" />
+
+import { describe, test, expect } from "bun:test"
+import { createEnvContext } from "./env-context"
+
+describe("createEnvContext", () => {
+  test("returns omo-env block with timezone and locale", () => {
+    // #given - no setup needed
+
+    // #when
+    const result = createEnvContext()
+
+    // #then
+    expect(result).toContain("<omo-env>")
+    expect(result).toContain("</omo-env>")
+    expect(result).toContain("Timezone:")
+    expect(result).toContain("Locale:")
+    expect(result).not.toContain("Current date:")
+  })
+
+  test("does not include time with seconds precision to preserve token cache", () => {
+    // #given - seconds-precision time changes every second, breaking cache on every request
+
+    // #when
+    const result = createEnvContext()
+
+    // #then - no HH:MM:SS pattern anywhere in the output
+    expect(result).not.toMatch(/\d{1,2}:\d{2}:\d{2}/)
+  })
+
+  test("does not include date or time fields since OpenCode already provides them", () => {
+    // #given - OpenCode's system.ts already injects date, platform, working directory
+
+    // #when
+    const result = createEnvContext()
+
+    // #then - only timezone and locale remain; both are stable across requests
+    expect(result).not.toContain("Current date:")
+    expect(result).not.toContain("Current time:")
+  })
+})

src/agents/env-context.ts

@@ -1,32 +1,15 @@
 /**
- * Creates OmO-specific environment context (time, timezone, locale).
+ * Creates OmO-specific environment context (timezone, locale).
  * Note: Working directory, platform, and date are already provided by OpenCode's system.ts,
  * so we only include fields that OpenCode doesn't provide to avoid duplication.
  * See: https://github.com/code-yeongyu/oh-my-opencode/issues/379
  */
 export function createEnvContext(): string {
-  const now = new Date()
   const timezone = Intl.DateTimeFormat().resolvedOptions().timeZone
   const locale = Intl.DateTimeFormat().resolvedOptions().locale
 
-  const dateStr = now.toLocaleDateString(locale, {
-    weekday: "short",
-    year: "numeric",
-    month: "short",
-    day: "numeric",
-  })
-
-  const timeStr = now.toLocaleTimeString(locale, {
-    hour: "2-digit",
-    minute: "2-digit",
-    second: "2-digit",
-    hour12: true,
-  })
-
   return `
 <omo-env>
-  Current date: ${dateStr}
-  Current time: ${timeStr}
   Timezone: ${timezone}
   Locale: ${locale}
 </omo-env>`

src/agents/hephaestus.ts

@@ -19,7 +19,7 @@ import {
   categorizeTools,
 } from "./dynamic-agent-prompt-builder";
 
-const MODE: AgentMode = "primary";
+const MODE: AgentMode = "all";
 
 function buildTodoDisciplineSection(useTaskSystem: boolean): string {
   if (useTaskSystem) {
@@ -448,6 +448,21 @@ ${oracleSection}
 4. **Run build** if applicable — exit code 0 required
 5. **Tell user** what you verified and the results — keep it clear and helpful
 
+### Auto-Commit Policy (MANDATORY for implementation/fix work)
+
+1. **Auto-commit after implementation is complete** when the task includes feature/fix code changes
+2. **Commit ONLY after verification gates pass**:
+   - \`lsp_diagnostics\` clean on all modified files
+   - Related tests pass
+   - Typecheck/build pass when applicable
+3. **If any gate fails, DO NOT commit** — fix issues first, re-run verification, then commit
+4. **Use Conventional Commits format** with meaningful intent-focused messages:
+   - \`feat(scope): add ...\` for new functionality
+   - \`fix(scope): resolve ...\` for bug fixes
+   - \`refactor(scope): simplify ...\` for internal restructuring
+5. **Do not make placeholder commits** (\`wip\`, \`temp\`, \`update\`) or commit unverified code
+6. **If user explicitly says not to commit**, skip commit and report that changes are left uncommitted
+
 - **File edit** — \`lsp_diagnostics\` clean
 - **Build** — Exit code 0
 - **Tests** — Pass (or pre-existing failures noted)

src/agents/sisyphus.ts

@@ -8,7 +8,7 @@ import {
   buildGeminiIntentGateEnforcement,
 } from "./sisyphus-gemini-overlays";
 
-const MODE: AgentMode = "primary";
+const MODE: AgentMode = "all";
 export const SISYPHUS_PROMPT_METADATA: AgentPromptMetadata = {
   category: "utility",
   cost: "EXPENSIVE",

src/agents/tool-restrictions.test.ts

@@ -4,6 +4,7 @@ import { createLibrarianAgent } from "./librarian"
 import { createExploreAgent } from "./explore"
 import { createMomusAgent } from "./momus"
 import { createMetisAgent } from "./metis"
+import { createAtlasAgent } from "./atlas"
 
 const TEST_MODEL = "anthropic/claude-sonnet-4-5"
 
@@ -96,4 +97,18 @@ describe("read-only agent tool restrictions", () => {
       }
     })
   })
+
+  describe("Atlas", () => {
+    test("allows delegation tools for orchestration", () => {
+      // given
+      const agent = createAtlasAgent({ model: TEST_MODEL })
+
+      // when
+      const permission = (agent.permission ?? {}) as Record<string, string>
+
+      // then
+      expect(permission["task"]).toBeUndefined()
+      expect(permission["call_omo_agent"]).toBeUndefined()
+    })
+  })
 })

src/agents/types.test.ts

@@ -2,11 +2,17 @@ import { describe, test, expect } from "bun:test";
 import { isGptModel, isGeminiModel } from "./types";
 
 describe("isGptModel", () => {
-  test("standard openai provider models", () => {
+  test("standard openai provider gpt models", () => {
     expect(isGptModel("openai/gpt-5.2")).toBe(true);
     expect(isGptModel("openai/gpt-4o")).toBe(true);
-    expect(isGptModel("openai/o1")).toBe(true);
-    expect(isGptModel("openai/o3-mini")).toBe(true);
+  });
+
+  test("o-series models are not gpt by name", () => {
+    expect(isGptModel("openai/o1")).toBe(false);
+    expect(isGptModel("openai/o3-mini")).toBe(false);
+    expect(isGptModel("litellm/o1")).toBe(false);
+    expect(isGptModel("litellm/o3-mini")).toBe(false);
+    expect(isGptModel("litellm/o4-mini")).toBe(false);
   });
 
   test("github copilot gpt models", () => {
@@ -17,9 +23,6 @@ describe("isGptModel", () => {
   test("litellm proxied gpt models", () => {
     expect(isGptModel("litellm/gpt-5.2")).toBe(true);
     expect(isGptModel("litellm/gpt-4o")).toBe(true);
-    expect(isGptModel("litellm/o1")).toBe(true);
-    expect(isGptModel("litellm/o3-mini")).toBe(true);
-    expect(isGptModel("litellm/o4-mini")).toBe(true);
   });
 
   test("other proxied gpt models", () => {
@@ -27,6 +30,11 @@ describe("isGptModel", () => {
     expect(isGptModel("custom-provider/gpt-5.2")).toBe(true);
   });
 
+  test("venice provider gpt models", () => {
+    expect(isGptModel("venice/gpt-5.2")).toBe(true);
+    expect(isGptModel("venice/gpt-4o")).toBe(true);
+  });
+
   test("gpt4 prefix without hyphen (legacy naming)", () => {
     expect(isGptModel("litellm/gpt4o")).toBe(true);
     expect(isGptModel("ollama/gpt4")).toBe(true);
@@ -39,8 +47,8 @@ describe("isGptModel", () => {
   });
 
   test("gemini models are not gpt", () => {
-    expect(isGptModel("google/gemini-3-pro")).toBe(false);
-    expect(isGptModel("litellm/gemini-3-pro")).toBe(false);
+    expect(isGptModel("google/gemini-3.1-pro")).toBe(false);
+    expect(isGptModel("litellm/gemini-3.1-pro")).toBe(false);
   });
 
   test("opencode provider is not gpt", () => {
@@ -50,29 +58,29 @@ describe("isGptModel", () => {
 
 describe("isGeminiModel", () => {
   test("#given google provider models #then returns true", () => {
-    expect(isGeminiModel("google/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("google/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("google/gemini-3-flash")).toBe(true);
     expect(isGeminiModel("google/gemini-2.5-pro")).toBe(true);
   });
 
   test("#given google-vertex provider models #then returns true", () => {
-    expect(isGeminiModel("google-vertex/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("google-vertex/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("google-vertex/gemini-3-flash")).toBe(true);
   });
 
   test("#given github copilot gemini models #then returns true", () => {
-    expect(isGeminiModel("github-copilot/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("github-copilot/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("github-copilot/gemini-3-flash")).toBe(true);
   });
 
   test("#given litellm proxied gemini models #then returns true", () => {
-    expect(isGeminiModel("litellm/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("litellm/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("litellm/gemini-3-flash")).toBe(true);
     expect(isGeminiModel("litellm/gemini-2.5-pro")).toBe(true);
   });
 
   test("#given other proxied gemini models #then returns true", () => {
-    expect(isGeminiModel("custom-provider/gemini-3-pro")).toBe(true);
+    expect(isGeminiModel("custom-provider/gemini-3.1-pro")).toBe(true);
     expect(isGeminiModel("ollama/gemini-3-flash")).toBe(true);
   });
 

src/agents/types.ts

@@ -70,14 +70,9 @@ function extractModelName(model: string): string {
   return model.includes("/") ? model.split("/").pop() ?? model : model
 }
 
-const GPT_MODEL_PREFIXES = ["gpt-", "gpt4", "o1", "o3", "o4"]
-
 export function isGptModel(model: string): boolean {
-  if (model.startsWith("openai/") || model.startsWith("github-copilot/gpt-"))
-    return true
-
   const modelName = extractModelName(model).toLowerCase()
-  return GPT_MODEL_PREFIXES.some((prefix) => modelName.startsWith(prefix))
+  return modelName.includes("gpt")
 }
 
 const GEMINI_PROVIDERS = ["google/", "google-vertex/"]

src/agents/utils.test.ts

@@ -603,8 +603,8 @@ describe("createBuiltinAgents with requiresProvider gating (hephaestus)", () =>
     }
   })
 
-  test("hephaestus is not created when only github-copilot provider is connected", async () => {
-    // #given - github-copilot provider has models available
+  test("hephaestus IS created when github-copilot is connected with a GPT model", async () => {
+    // #given - github-copilot provider has gpt-5.3-codex available
     const fetchSpy = spyOn(shared, "fetchAvailableModels").mockResolvedValue(
       new Set(["github-copilot/gpt-5.3-codex"])
     )
@@ -614,8 +614,8 @@ describe("createBuiltinAgents with requiresProvider gating (hephaestus)", () =>
       // #when
       const agents = await createBuiltinAgents([], {}, undefined, TEST_DEFAULT_MODEL, undefined, undefined, [], {})
 
-      // #then
-      expect(agents.hephaestus).toBeUndefined()
+      // #then - github-copilot is now a valid provider for hephaestus
+      expect(agents.hephaestus).toBeDefined()
     } finally {
       fetchSpy.mockRestore()
       cacheSpy.mockRestore()
@@ -1002,7 +1002,7 @@ describe("buildAgent with category and skills", () => {
     const agent = buildAgent(source["test-agent"], TEST_MODEL)
 
     // #then - category's built-in model is applied
-    expect(agent.model).toBe("google/gemini-3-pro")
+    expect(agent.model).toBe("google/gemini-3.1-pro")
   })
 
   test("agent with category and existing model keeps existing model", () => {

src/cli/__snapshots__/model-fallback.test.ts.snap

@@ -325,7 +325,7 @@ exports[`generateModelConfig single native provider uses Gemini models when only
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   "agents": {
     "atlas": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
     "explore": {
       "model": "opencode/gpt-5-nano",
@@ -334,34 +334,34 @@ exports[`generateModelConfig single native provider uses Gemini models when only
       "model": "opencode/glm-4.7-free",
     },
     "metis": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "momus": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "multimodal-looker": {
       "model": "google/gemini-3-flash-preview",
     },
     "oracle": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "prometheus": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "quick": {
       "model": "google/gemini-3-flash-preview",
     },
     "ultrabrain": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "unspecified-high": {
@@ -371,7 +371,7 @@ exports[`generateModelConfig single native provider uses Gemini models when only
       "model": "google/gemini-3-flash-preview",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -386,7 +386,7 @@ exports[`generateModelConfig single native provider uses Gemini models with isMa
   "$schema": "https://raw.githubusercontent.com/code-yeongyu/oh-my-opencode/master/assets/oh-my-opencode.schema.json",
   "agents": {
     "atlas": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
     "explore": {
       "model": "opencode/gpt-5-nano",
@@ -395,44 +395,44 @@ exports[`generateModelConfig single native provider uses Gemini models with isMa
       "model": "opencode/glm-4.7-free",
     },
     "metis": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "momus": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "multimodal-looker": {
       "model": "google/gemini-3-flash-preview",
     },
     "oracle": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "prometheus": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "quick": {
       "model": "google/gemini-3-flash-preview",
     },
     "ultrabrain": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "unspecified-high": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
     },
     "unspecified-low": {
       "model": "google/gemini-3-flash-preview",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -485,7 +485,7 @@ exports[`generateModelConfig all native providers uses preferred models from fal
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -506,7 +506,7 @@ exports[`generateModelConfig all native providers uses preferred models from fal
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -559,7 +559,7 @@ exports[`generateModelConfig all native providers uses preferred models with isM
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -581,7 +581,7 @@ exports[`generateModelConfig all native providers uses preferred models with isM
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -634,7 +634,7 @@ exports[`generateModelConfig fallback providers uses OpenCode Zen models when on
   },
   "categories": {
     "artistry": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "deep": {
@@ -655,7 +655,7 @@ exports[`generateModelConfig fallback providers uses OpenCode Zen models when on
       "model": "opencode/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "writing": {
@@ -708,7 +708,7 @@ exports[`generateModelConfig fallback providers uses OpenCode Zen models with is
   },
   "categories": {
     "artistry": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "deep": {
@@ -730,7 +730,7 @@ exports[`generateModelConfig fallback providers uses OpenCode Zen models with is
       "model": "opencode/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "writing": {
@@ -779,14 +779,14 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models when
   },
   "categories": {
     "artistry": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "quick": {
       "model": "github-copilot/claude-haiku-4.5",
     },
     "ultrabrain": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "unspecified-high": {
@@ -796,7 +796,7 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models when
       "model": "github-copilot/claude-sonnet-4.5",
     },
     "visual-engineering": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -845,14 +845,14 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models with
   },
   "categories": {
     "artistry": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "quick": {
       "model": "github-copilot/claude-haiku-4.5",
     },
     "ultrabrain": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "unspecified-high": {
@@ -863,7 +863,7 @@ exports[`generateModelConfig fallback providers uses GitHub Copilot models with
       "model": "github-copilot/claude-sonnet-4.5",
     },
     "visual-engineering": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1026,7 +1026,7 @@ exports[`generateModelConfig mixed provider scenarios uses Claude + OpenCode Zen
   },
   "categories": {
     "artistry": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "deep": {
@@ -1047,7 +1047,7 @@ exports[`generateModelConfig mixed provider scenarios uses Claude + OpenCode Zen
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "opencode/gemini-3-pro",
+      "model": "opencode/gemini-3.1-pro",
       "variant": "high",
     },
     "writing": {
@@ -1100,7 +1100,7 @@ exports[`generateModelConfig mixed provider scenarios uses OpenAI + Copilot comb
   },
   "categories": {
     "artistry": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -1121,7 +1121,7 @@ exports[`generateModelConfig mixed provider scenarios uses OpenAI + Copilot comb
       "model": "github-copilot/claude-sonnet-4.5",
     },
     "visual-engineering": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1217,7 +1217,7 @@ exports[`generateModelConfig mixed provider scenarios uses Gemini + Claude combi
       "model": "google/gemini-3-flash-preview",
     },
     "oracle": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "prometheus": {
@@ -1231,14 +1231,14 @@ exports[`generateModelConfig mixed provider scenarios uses Gemini + Claude combi
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "quick": {
       "model": "anthropic/claude-haiku-4-5",
     },
     "ultrabrain": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "unspecified-high": {
@@ -1248,7 +1248,7 @@ exports[`generateModelConfig mixed provider scenarios uses Gemini + Claude combi
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1301,7 +1301,7 @@ exports[`generateModelConfig mixed provider scenarios uses all fallback provider
   },
   "categories": {
     "artistry": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -1322,7 +1322,7 @@ exports[`generateModelConfig mixed provider scenarios uses all fallback provider
       "model": "github-copilot/claude-sonnet-4.5",
     },
     "visual-engineering": {
-      "model": "github-copilot/gemini-3-pro-preview",
+      "model": "github-copilot/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1375,7 +1375,7 @@ exports[`generateModelConfig mixed provider scenarios uses all providers togethe
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -1396,7 +1396,7 @@ exports[`generateModelConfig mixed provider scenarios uses all providers togethe
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {
@@ -1449,7 +1449,7 @@ exports[`generateModelConfig mixed provider scenarios uses all providers with is
   },
   "categories": {
     "artistry": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "deep": {
@@ -1471,7 +1471,7 @@ exports[`generateModelConfig mixed provider scenarios uses all providers with is
       "model": "anthropic/claude-sonnet-4-5",
     },
     "visual-engineering": {
-      "model": "google/gemini-3-pro-preview",
+      "model": "google/gemini-3.1-pro-preview",
       "variant": "high",
     },
     "writing": {

src/cli/config-manager.test.ts

@@ -178,7 +178,7 @@ describe("config-manager ANTIGRAVITY_PROVIDER_CONFIG", () => {
     expect(models).toBeTruthy()
 
     const required = [
-      "antigravity-gemini-3-pro",
+      "antigravity-gemini-3.1-pro",
       "antigravity-gemini-3-flash",
       "antigravity-claude-sonnet-4-6",
       "antigravity-claude-sonnet-4-6-thinking",
@@ -206,7 +206,7 @@ describe("config-manager ANTIGRAVITY_PROVIDER_CONFIG", () => {
     const models = (ANTIGRAVITY_PROVIDER_CONFIG as any).google.models as Record<string, any>
 
     // #when checking Gemini Pro variants
-    const pro = models["antigravity-gemini-3-pro"]
+    const pro = models["antigravity-gemini-3.1-pro"]
     // #then should have low and high variants
     expect(pro.variants).toBeTruthy()
     expect(pro.variants.low).toBeTruthy()

src/cli/config-manager/antigravity-provider-configuration.ts

@@ -4,10 +4,10 @@
  * IMPORTANT: Model names MUST use `antigravity-` prefix for stability.
  *
  * Since opencode-antigravity-auth v1.3.0, models use a variant system:
- * - `antigravity-gemini-3-pro` with variants: low, high
+ * - `antigravity-gemini-3.1-pro` with variants: low, high
  * - `antigravity-gemini-3-flash` with variants: minimal, low, medium, high
  *
- * Legacy tier-suffixed names (e.g., `antigravity-gemini-3-pro-high`) still work
+ * Legacy tier-suffixed names (e.g., `antigravity-gemini-3.1-pro-high`) still work
  * but variants are the recommended approach.
  *
  * @see https://github.com/NoeFabris/opencode-antigravity-auth#models
@@ -16,7 +16,7 @@ export const ANTIGRAVITY_PROVIDER_CONFIG = {
   google: {
     name: "Google",
     models: {
-      "antigravity-gemini-3-pro": {
+      "antigravity-gemini-3.1-pro": {
         name: "Gemini 3 Pro (Antigravity)",
         limit: { context: 1048576, output: 65535 },
         modalities: { input: ["text", "image", "pdf"], output: ["text"] },

src/cli/config-manager/bun-install.ts

@@ -1,4 +1,5 @@
 import { getConfigDir } from "./config-context"
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide"
 
 const BUN_INSTALL_TIMEOUT_SECONDS = 60
 const BUN_INSTALL_TIMEOUT_MS = BUN_INSTALL_TIMEOUT_SECONDS * 1000
@@ -16,7 +17,7 @@ export async function runBunInstall(): Promise<boolean> {
 
 export async function runBunInstallWithDetails(): Promise<BunInstallResult> {
   try {
-    const proc = Bun.spawn(["bun", "install"], {
+    const proc = spawnWithWindowsHide(["bun", "install"], {
       cwd: getConfigDir(),
       stdout: "inherit",
       stderr: "inherit",

src/cli/config-manager/opencode-binary.ts

@@ -1,4 +1,5 @@
 import type { OpenCodeBinaryType } from "../../shared/opencode-config-dir-types"
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide"
 import { initConfigContext } from "./config-context"
 
 const OPENCODE_BINARIES = ["opencode", "opencode-desktop"] as const
@@ -11,7 +12,7 @@ interface OpenCodeBinaryResult {
 async function findOpenCodeBinaryWithVersion(): Promise<OpenCodeBinaryResult | null> {
   for (const binary of OPENCODE_BINARIES) {
     try {
-      const proc = Bun.spawn([binary, "--version"], {
+      const proc = spawnWithWindowsHide([binary, "--version"], {
         stdout: "pipe",
         stderr: "pipe",
       })

src/cli/config-manager/write-omo-config.test.ts

@@ -0,0 +1,80 @@
+import { afterEach, beforeEach, describe, expect, it } from "bun:test"
+import { mkdirSync, readFileSync, rmSync, writeFileSync } from "node:fs"
+import { tmpdir } from "node:os"
+import { join } from "node:path"
+
+import { parseJsonc } from "../../shared/jsonc-parser"
+import type { InstallConfig } from "../types"
+import { resetConfigContext } from "./config-context"
+import { generateOmoConfig } from "./generate-omo-config"
+import { writeOmoConfig } from "./write-omo-config"
+
+const installConfig: InstallConfig = {
+  hasClaude: true,
+  isMax20: true,
+  hasOpenAI: true,
+  hasGemini: true,
+  hasCopilot: false,
+  hasOpencodeZen: false,
+  hasZaiCodingPlan: false,
+  hasKimiForCoding: false,
+}
+
+function getRecord(value: unknown): Record<string, unknown> {
+  if (value && typeof value === "object" && !Array.isArray(value)) {
+    return value as Record<string, unknown>
+  }
+
+  return {}
+}
+
+describe("writeOmoConfig", () => {
+  let testConfigDir = ""
+  let testConfigPath = ""
+
+  beforeEach(() => {
+    testConfigDir = join(tmpdir(), `omo-write-config-${Date.now()}-${Math.random().toString(36).slice(2)}`)
+    testConfigPath = join(testConfigDir, "oh-my-opencode.json")
+
+    mkdirSync(testConfigDir, { recursive: true })
+    process.env.OPENCODE_CONFIG_DIR = testConfigDir
+    resetConfigContext()
+  })
+
+  afterEach(() => {
+    rmSync(testConfigDir, { recursive: true, force: true })
+    resetConfigContext()
+    delete process.env.OPENCODE_CONFIG_DIR
+  })
+
+  it("preserves existing user values while adding new defaults", () => {
+    // given
+    const existingConfig = {
+      agents: {
+        sisyphus: {
+          model: "custom/provider-model",
+        },
+      },
+      disabled_hooks: ["comment-checker"],
+    }
+    writeFileSync(testConfigPath, JSON.stringify(existingConfig, null, 2) + "\n", "utf-8")
+
+    const generatedDefaults = generateOmoConfig(installConfig)
+
+    // when
+    const result = writeOmoConfig(installConfig)
+
+    // then
+    expect(result.success).toBe(true)
+
+    const savedConfig = parseJsonc<Record<string, unknown>>(readFileSync(testConfigPath, "utf-8"))
+    const savedAgents = getRecord(savedConfig.agents)
+    const savedSisyphus = getRecord(savedAgents.sisyphus)
+    expect(savedSisyphus.model).toBe("custom/provider-model")
+    expect(savedConfig.disabled_hooks).toEqual(["comment-checker"])
+
+    for (const defaultKey of Object.keys(generatedDefaults)) {
+      expect(savedConfig).toHaveProperty(defaultKey)
+    }
+  })
+})

src/cli/config-manager/write-omo-config.ts

@@ -43,7 +43,7 @@ export function writeOmoConfig(installConfig: InstallConfig): ConfigMergeResult
           return { success: true, configPath: omoConfigPath }
         }
 
-        const merged = deepMergeRecord(existing, newConfig)
+        const merged = deepMergeRecord(newConfig, existing)
         writeFileSync(omoConfigPath, JSON.stringify(merged, null, 2) + "\n")
       } catch (parseErr) {
         if (parseErr instanceof SyntaxError) {

src/cli/doctor/checks/dependencies.ts

@@ -3,6 +3,7 @@ import { createRequire } from "node:module"
 import { dirname, join } from "node:path"
 
 import type { DependencyInfo } from "../types"
+import { spawnWithWindowsHide } from "../../../shared/spawn-with-windows-hide"
 
 async function checkBinaryExists(binary: string): Promise<{ exists: boolean; path: string | null }> {
   try {
@@ -18,7 +19,7 @@ async function checkBinaryExists(binary: string): Promise<{ exists: boolean; pat
 
 async function getBinaryVersion(binary: string): Promise<string | null> {
   try {
-    const proc = Bun.spawn([binary, "--version"], { stdout: "pipe", stderr: "pipe" })
+    const proc = spawnWithWindowsHide([binary, "--version"], { stdout: "pipe", stderr: "pipe" })
     const output = await new Response(proc.stdout).text()
     await proc.exited
     if (proc.exitCode === 0) {
@@ -140,4 +141,3 @@ export async function checkCommentChecker(): Promise<DependencyInfo> {
     path: resolvedPath,
   }
 }
-

src/cli/doctor/checks/model-resolution.test.ts

@@ -26,7 +26,7 @@ describe("model-resolution check", () => {
       // then: Should have category entries
       const visual = info.categories.find((c) => c.name === "visual-engineering")
       expect(visual).toBeDefined()
-      expect(visual!.requirement.fallbackChain[0]?.model).toBe("gemini-3-pro")
+      expect(visual!.requirement.fallbackChain[0]?.model).toBe("gemini-3.1-pro")
       expect(visual!.requirement.fallbackChain[0]?.providers).toContain("google")
     })
   })

src/cli/doctor/checks/system-binary.ts

@@ -1,6 +1,7 @@
 import { existsSync } from "node:fs"
 import { homedir } from "node:os"
 import { join } from "node:path"
+import { spawnWithWindowsHide } from "../../../shared/spawn-with-windows-hide"
 
 import { OPENCODE_BINARIES } from "../constants"
 
@@ -110,7 +111,7 @@ export async function getOpenCodeVersion(
 ): Promise<string | null> {
   try {
     const command = buildVersionCommand(binaryPath, platform)
-    const processResult = Bun.spawn(command, { stdout: "pipe", stderr: "pipe" })
+    const processResult = spawnWithWindowsHide(command, { stdout: "pipe", stderr: "pipe" })
     const output = await new Response(processResult.stdout).text()
     await processResult.exited
 

src/cli/doctor/checks/tools-gh.ts

@@ -1,3 +1,5 @@
+import { spawnWithWindowsHide } from "../../../shared/spawn-with-windows-hide"
+
 export interface GhCliInfo {
   installed: boolean
   version: string | null
@@ -19,7 +21,7 @@ async function checkBinaryExists(binary: string): Promise<{ exists: boolean; pat
 
 async function getGhVersion(): Promise<string | null> {
   try {
-    const processResult = Bun.spawn(["gh", "--version"], { stdout: "pipe", stderr: "pipe" })
+    const processResult = spawnWithWindowsHide(["gh", "--version"], { stdout: "pipe", stderr: "pipe" })
     const output = await new Response(processResult.stdout).text()
     await processResult.exited
     if (processResult.exitCode !== 0) return null
@@ -38,7 +40,7 @@ async function getGhAuthStatus(): Promise<{
   error: string | null
 }> {
   try {
-    const processResult = Bun.spawn(["gh", "auth", "status"], {
+    const processResult = spawnWithWindowsHide(["gh", "auth", "status"], {
       stdout: "pipe",
       stderr: "pipe",
       env: { ...process.env, GH_NO_UPDATE_NOTIFIER: "1" },

src/cli/model-fallback-requirements.ts

@@ -24,7 +24,7 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
   oracle: {
     fallbackChain: [
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "high" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
     ],
   },
@@ -59,7 +59,7 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
       { providers: ["kimi-for-coding"], model: "k2p5" },
       { providers: ["opencode"], model: "kimi-k2.5-free" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "high" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro" },
     ],
   },
   metis: {
@@ -68,14 +68,14 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
       { providers: ["kimi-for-coding"], model: "k2p5" },
       { providers: ["opencode"], model: "kimi-k2.5-free" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "high" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
     ],
   },
   momus: {
     fallbackChain: [
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "medium" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
     ],
   },
   atlas: {
@@ -84,7 +84,7 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
       { providers: ["opencode"], model: "kimi-k2.5-free" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-sonnet-4-5" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro" },
     ],
   },
 }
@@ -92,7 +92,7 @@ export const CLI_AGENT_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
 export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> = {
   "visual-engineering": {
     fallbackChain: [
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
       { providers: ["zai-coding-plan"], model: "glm-5" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
       { providers: ["kimi-for-coding"], model: "k2p5" },
@@ -101,7 +101,7 @@ export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> =
   ultrabrain: {
     fallbackChain: [
       { providers: ["openai", "opencode"], model: "gpt-5.3-codex", variant: "xhigh" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
     ],
   },
@@ -109,17 +109,17 @@ export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> =
     fallbackChain: [
       { providers: ["openai", "opencode"], model: "gpt-5.3-codex", variant: "medium" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
     ],
     requiresModel: "gpt-5.3-codex",
   },
   artistry: {
     fallbackChain: [
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro", variant: "high" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro", variant: "high" },
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2" },
     ],
-    requiresModel: "gemini-3-pro",
+    requiresModel: "gemini-3.1-pro",
   },
   quick: {
     fallbackChain: [
@@ -139,7 +139,7 @@ export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> =
     fallbackChain: [
       { providers: ["anthropic", "github-copilot", "opencode"], model: "claude-opus-4-6", variant: "max" },
       { providers: ["openai", "github-copilot", "opencode"], model: "gpt-5.2", variant: "high" },
-      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3-pro" },
+      { providers: ["google", "github-copilot", "opencode"], model: "gemini-3.1-pro" },
     ],
   },
   writing: {

src/cli/provider-model-id-transform.test.ts

@@ -40,16 +40,16 @@ describe("transformModelForProvider", () => {
 			expect(result).toBe("claude-haiku-4.5")
 		})
 
-		test("transforms gemini-3-pro to gemini-3-pro-preview", () => {
-			// #given github-copilot provider and gemini-3-pro model
+		test("transforms gemini-3.1-pro to gemini-3.1-pro-preview", () => {
+			// #given github-copilot provider and gemini-3.1-pro model
 			const provider = "github-copilot"
-			const model = "gemini-3-pro"
+			const model = "gemini-3.1-pro"
 
 			// #when transformModelForProvider is called
 			const result = transformModelForProvider(provider, model)
 
-			// #then should transform to gemini-3-pro-preview
-			expect(result).toBe("gemini-3-pro-preview")
+			// #then should transform to gemini-3.1-pro-preview
+			expect(result).toBe("gemini-3.1-pro-preview")
 		})
 
 		test("transforms gemini-3-flash to gemini-3-flash-preview", () => {
@@ -64,16 +64,16 @@ describe("transformModelForProvider", () => {
 			expect(result).toBe("gemini-3-flash-preview")
 		})
 
-		test("prevents double transformation of gemini-3-pro-preview", () => {
-			// #given github-copilot provider and gemini-3-pro-preview model (already transformed)
+		test("prevents double transformation of gemini-3.1-pro-preview", () => {
+			// #given github-copilot provider and gemini-3.1-pro-preview model (already transformed)
 			const provider = "github-copilot"
-			const model = "gemini-3-pro-preview"
+			const model = "gemini-3.1-pro-preview"
 
 			// #when transformModelForProvider is called
 			const result = transformModelForProvider(provider, model)
 
-			// #then should NOT become gemini-3-pro-preview-preview
-			expect(result).toBe("gemini-3-pro-preview")
+			// #then should NOT become gemini-3.1-pro-preview-preview
+			expect(result).toBe("gemini-3.1-pro-preview")
 		})
 
 		test("prevents double transformation of gemini-3-flash-preview", () => {
@@ -102,16 +102,16 @@ describe("transformModelForProvider", () => {
 			expect(result).toBe("gemini-3-flash-preview")
 		})
 
-		test("transforms gemini-3-pro to gemini-3-pro-preview", () => {
-			// #given google provider and gemini-3-pro model
+		test("transforms gemini-3.1-pro to gemini-3.1-pro-preview", () => {
+			// #given google provider and gemini-3.1-pro model
 			const provider = "google"
-			const model = "gemini-3-pro"
+			const model = "gemini-3.1-pro"
 
 			// #when transformModelForProvider is called
 			const result = transformModelForProvider(provider, model)
 
-			// #then should transform to gemini-3-pro-preview
-			expect(result).toBe("gemini-3-pro-preview")
+			// #then should transform to gemini-3.1-pro-preview
+			expect(result).toBe("gemini-3.1-pro-preview")
 		})
 
 		test("passes through other gemini models unchanged", () => {
@@ -138,16 +138,16 @@ describe("transformModelForProvider", () => {
 			expect(result).toBe("gemini-3-flash-preview")
 		})
 
-		test("prevents double transformation of gemini-3-pro-preview", () => {
-			// #given google provider and gemini-3-pro-preview model (already transformed)
+		test("prevents double transformation of gemini-3.1-pro-preview", () => {
+			// #given google provider and gemini-3.1-pro-preview model (already transformed)
 			const provider = "google"
-			const model = "gemini-3-pro-preview"
+			const model = "gemini-3.1-pro-preview"
 
 			// #when transformModelForProvider is called
 			const result = transformModelForProvider(provider, model)
 
-			// #then should NOT become gemini-3-pro-preview-preview
-			expect(result).toBe("gemini-3-pro-preview")
+			// #then should NOT become gemini-3.1-pro-preview-preview
+			expect(result).toBe("gemini-3.1-pro-preview")
 		})
 
 		test("does not transform claude models for google provider", () => {

src/cli/run/event-handlers.test.ts

@@ -1,4 +1,4 @@
-import { describe, it, expect, spyOn } from "bun:test"
+const { describe, it, expect, spyOn } = require("bun:test")
 import type { RunContext } from "./types"
 import { createEventState } from "./events"
 import { handleSessionStatus, handleMessagePartUpdated, handleMessageUpdated, handleTuiToast } from "./event-handlers"
@@ -235,9 +235,7 @@ describe("handleMessagePartUpdated", () => {
 
   it("prints completion metadata once when assistant text part is completed", () => {
     // given
-    const nowSpy = spyOn(Date, "now")
-    nowSpy.mockReturnValueOnce(1000)
-    nowSpy.mockReturnValueOnce(3400)
+    const nowSpy = spyOn(Date, "now").mockReturnValue(3400)
 
     const ctx = createMockContext("ses_main")
     const state = createEventState()
@@ -259,6 +257,7 @@ describe("handleMessagePartUpdated", () => {
       } as any,
       state,
     )
+    state.messageStartedAtById["msg_1"] = 1000
 
     // when
     handleMessagePartUpdated(

src/cli/run/event-state.ts

@@ -7,6 +7,8 @@ export interface EventState {
   currentTool: string | null
   /** Set to true when the main session has produced meaningful work (text, tool call, or tool result) */
   hasReceivedMeaningfulWork: boolean
+  /** Timestamp of the last received event (for watchdog detection) */
+  lastEventTimestamp: number
   /** Count of assistant messages for the main session */
   messageCount: number
   /** Current agent name from the latest assistant message */
@@ -54,6 +56,7 @@ export function createEventState(): EventState {
     lastPartText: "",
     currentTool: null,
     hasReceivedMeaningfulWork: false,
+    lastEventTimestamp: Date.now(),
     messageCount: 0,
     currentAgent: null,
     currentModel: null,

src/cli/run/event-stream-processor.ts

@@ -35,6 +35,9 @@ export async function processEvents(
         logEventVerbose(ctx, payload)
       }
 
+      // Update last event timestamp for watchdog detection
+      state.lastEventTimestamp = Date.now()
+
       handleSessionError(ctx, payload, state)
       handleSessionIdle(ctx, payload, state)
       handleSessionStatus(ctx, payload, state)

src/cli/run/integration.test.ts

@@ -3,6 +3,7 @@ import type { RunResult } from "./types"
 import { createJsonOutputManager } from "./json-output"
 import { resolveSession } from "./session-resolver"
 import { executeOnCompleteHook } from "./on-complete-hook"
+import * as spawnWithWindowsHideModule from "../../shared/spawn-with-windows-hide"
 import type { OpencodeClient } from "./types"
 import * as originalSdk from "@opencode-ai/sdk"
 import * as originalPortUtils from "../../shared/port-utils"
@@ -147,7 +148,7 @@ describe("integration: --session-id", () => {
     const result = resolveSession({ client: mockClient, sessionId, directory: "/test" })
 
     // then
-    await expect(result).rejects.toThrow(`Session not found: ${sessionId}`)
+    expect(result).rejects.toThrow(`Session not found: ${sessionId}`)
     expect(mockClient.session.get).toHaveBeenCalledWith({
       path: { id: sessionId },
       query: { directory: "/test" },
@@ -161,10 +162,13 @@ describe("integration: --on-complete", () => {
 
   beforeEach(() => {
     spyOn(console, "error").mockImplementation(() => {})
-    spawnSpy = spyOn(Bun, "spawn").mockReturnValue({
+    spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue({
       exited: Promise.resolve(0),
       exitCode: 0,
-    } as unknown as ReturnType<typeof Bun.spawn>)
+      stdout: undefined,
+      stderr: undefined,
+      kill: () => {},
+    } satisfies ReturnType<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>)
   })
 
   afterEach(() => {
@@ -186,7 +190,7 @@ describe("integration: --on-complete", () => {
 
     // then
     expect(spawnSpy).toHaveBeenCalledTimes(1)
-    const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+    const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
     expect(options?.env?.SESSION_ID).toBe("session-123")
     expect(options?.env?.EXIT_CODE).toBe("0")
     expect(options?.env?.DURATION_MS).toBe("5000")
@@ -208,10 +212,13 @@ describe("integration: option combinations", () => {
     spyOn(console, "error").mockImplementation(() => {})
     mockStdout = createMockWriteStream()
     mockStderr = createMockWriteStream()
-    spawnSpy = spyOn(Bun, "spawn").mockReturnValue({
+    spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue({
       exited: Promise.resolve(0),
       exitCode: 0,
-    } as unknown as ReturnType<typeof Bun.spawn>)
+      stdout: undefined,
+      stderr: undefined,
+      kill: () => {},
+    } satisfies ReturnType<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>)
   })
 
   afterEach(() => {
@@ -249,9 +256,9 @@ describe("integration: option combinations", () => {
     const emitted = mockStdout.writes[0]!
     expect(() => JSON.parse(emitted)).not.toThrow()
     expect(spawnSpy).toHaveBeenCalledTimes(1)
-    const [args] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+    const [args] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
     expect(args).toEqual(["sh", "-c", "echo done"])
-    const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+    const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
     expect(options?.env?.SESSION_ID).toBe("session-123")
     expect(options?.env?.EXIT_CODE).toBe("0")
     expect(options?.env?.DURATION_MS).toBe("5000")

src/cli/run/on-complete-hook.test.ts

@@ -1,4 +1,5 @@
 import { describe, it, expect, spyOn, beforeEach, afterEach } from "bun:test"
+import * as spawnWithWindowsHideModule from "../../shared/spawn-with-windows-hide"
 import { executeOnCompleteHook } from "./on-complete-hook"
 
 describe("executeOnCompleteHook", () => {
@@ -6,7 +7,10 @@ describe("executeOnCompleteHook", () => {
     return {
       exited: Promise.resolve(exitCode),
       exitCode,
-    } as unknown as ReturnType<typeof Bun.spawn>
+      stdout: undefined,
+      stderr: undefined,
+      kill: () => {},
+    } satisfies ReturnType<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
   }
 
   let consoleErrorSpy: ReturnType<typeof spyOn<typeof console, "error">>
@@ -21,7 +25,7 @@ describe("executeOnCompleteHook", () => {
 
   it("executes command with correct env vars", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(0))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(0))
 
     try {
       // when
@@ -35,7 +39,7 @@ describe("executeOnCompleteHook", () => {
 
       // then
       expect(spawnSpy).toHaveBeenCalledTimes(1)
-      const [args, options] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+      const [args, options] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
 
       expect(args).toEqual(["sh", "-c", "echo test"])
       expect(options?.env?.SESSION_ID).toBe("session-123")
@@ -51,7 +55,7 @@ describe("executeOnCompleteHook", () => {
 
   it("env var values are strings", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(0))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(0))
 
     try {
       // when
@@ -64,7 +68,7 @@ describe("executeOnCompleteHook", () => {
       })
 
       // then
-      const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof Bun.spawn>
+      const [_, options] = spawnSpy.mock.calls[0] as Parameters<typeof spawnWithWindowsHideModule.spawnWithWindowsHide>
 
       expect(options?.env?.EXIT_CODE).toBe("1")
       expect(options?.env?.EXIT_CODE).toBeTypeOf("string")
@@ -79,7 +83,7 @@ describe("executeOnCompleteHook", () => {
 
   it("empty command string is no-op", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(0))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(0))
 
     try {
       // when
@@ -100,7 +104,7 @@ describe("executeOnCompleteHook", () => {
 
   it("whitespace-only command is no-op", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(0))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(0))
 
     try {
       // when
@@ -121,11 +125,11 @@ describe("executeOnCompleteHook", () => {
 
   it("command failure logs warning but does not throw", async () => {
     // given
-    const spawnSpy = spyOn(Bun, "spawn").mockReturnValue(createProc(1))
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockReturnValue(createProc(1))
 
     try {
       // when
-      await expect(
+      expect(
         executeOnCompleteHook({
           command: "false",
           sessionId: "session-123",
@@ -149,13 +153,13 @@ describe("executeOnCompleteHook", () => {
   it("spawn error logs warning but does not throw", async () => {
     // given
     const spawnError = new Error("Command not found")
-    const spawnSpy = spyOn(Bun, "spawn").mockImplementation(() => {
+    const spawnSpy = spyOn(spawnWithWindowsHideModule, "spawnWithWindowsHide").mockImplementation(() => {
       throw spawnError
     })
 
     try {
       // when
-      await expect(
+      expect(
         executeOnCompleteHook({
           command: "nonexistent-command",
           sessionId: "session-123",

src/cli/run/on-complete-hook.ts

@@ -1,4 +1,5 @@
 import pc from "picocolors"
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide"
 
 export async function executeOnCompleteHook(options: {
   command: string
@@ -17,7 +18,7 @@ export async function executeOnCompleteHook(options: {
   console.error(pc.dim(`Running on-complete hook: ${trimmedCommand}`))
 
   try {
-    const proc = Bun.spawn(["sh", "-c", trimmedCommand], {
+    const proc = spawnWithWindowsHide(["sh", "-c", trimmedCommand], {
       env: {
         ...process.env,
         SESSION_ID: sessionId,

src/cli/run/opencode-binary-resolver.ts

@@ -1,4 +1,5 @@
 import { delimiter, dirname, join } from "node:path"
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide"
 
 const OPENCODE_COMMANDS = ["opencode", "opencode-desktop"] as const
 const WINDOWS_SUFFIXES = ["", ".exe", ".cmd", ".bat", ".ps1"] as const
@@ -41,7 +42,7 @@ export function collectCandidateBinaryPaths(
 
 export async function canExecuteBinary(binaryPath: string): Promise<boolean> {
   try {
-    const proc = Bun.spawn([binaryPath, "--version"], {
+    const proc = spawnWithWindowsHide([binaryPath, "--version"], {
       stdout: "pipe",
       stderr: "pipe",
     })

src/cli/run/poll-for-completion.ts

@@ -8,11 +8,15 @@ const DEFAULT_POLL_INTERVAL_MS = 500
 const DEFAULT_REQUIRED_CONSECUTIVE = 1
 const ERROR_GRACE_CYCLES = 3
 const MIN_STABILIZATION_MS = 1_000
+const DEFAULT_EVENT_WATCHDOG_MS = 30_000 // 30 seconds
+const DEFAULT_SECONDARY_MEANINGFUL_WORK_TIMEOUT_MS = 60_000 // 60 seconds
 
 export interface PollOptions {
   pollIntervalMs?: number
   requiredConsecutive?: number
   minStabilizationMs?: number
+  eventWatchdogMs?: number
+  secondaryMeaningfulWorkTimeoutMs?: number
 }
 
 export async function pollForCompletion(
@@ -28,9 +32,15 @@ export async function pollForCompletion(
     options.minStabilizationMs ?? MIN_STABILIZATION_MS
   const minStabilizationMs =
     rawMinStabilizationMs > 0 ? rawMinStabilizationMs : MIN_STABILIZATION_MS
+  const eventWatchdogMs =
+    options.eventWatchdogMs ?? DEFAULT_EVENT_WATCHDOG_MS
+  const secondaryMeaningfulWorkTimeoutMs =
+    options.secondaryMeaningfulWorkTimeoutMs ??
+    DEFAULT_SECONDARY_MEANINGFUL_WORK_TIMEOUT_MS
   let consecutiveCompleteChecks = 0
   let errorCycleCount = 0
   let firstWorkTimestamp: number | null = null
+  let secondaryTimeoutChecked = false
   const pollStartTimestamp = Date.now()
 
   while (!abortController.signal.aborted) {
@@ -59,7 +69,37 @@ export async function pollForCompletion(
       errorCycleCount = 0
     }
 
-    const mainSessionStatus = await getMainSessionStatus(ctx)
+    // Watchdog: if no events received for N seconds, verify session status via API
+    let mainSessionStatus: "idle" | "busy" | "retry" | null = null
+    if (eventState.lastEventTimestamp !== null) {
+      const timeSinceLastEvent = Date.now() - eventState.lastEventTimestamp
+      if (timeSinceLastEvent > eventWatchdogMs) {
+        // Events stopped coming - verify actual session state
+        console.log(
+          pc.yellow(
+            `\n  No events for ${Math.round(
+              timeSinceLastEvent / 1000
+            )}s, verifying session status...`
+          )
+        )
+
+        // Force check session status directly
+        mainSessionStatus = await getMainSessionStatus(ctx)
+        if (mainSessionStatus === "idle") {
+          eventState.mainSessionIdle = true
+        } else if (mainSessionStatus === "busy" || mainSessionStatus === "retry") {
+          eventState.mainSessionIdle = false
+        }
+
+        // Reset timestamp to avoid repeated checks
+        eventState.lastEventTimestamp = Date.now()
+      }
+    }
+
+    // Only call getMainSessionStatus if watchdog didn't already check
+    if (mainSessionStatus === null) {
+      mainSessionStatus = await getMainSessionStatus(ctx)
+    }
     if (mainSessionStatus === "busy" || mainSessionStatus === "retry") {
       eventState.mainSessionIdle = false
     } else if (mainSessionStatus === "idle") {
@@ -81,6 +121,50 @@ export async function pollForCompletion(
         consecutiveCompleteChecks = 0
         continue
       }
+
+      // Secondary timeout: if we've been polling for reasonable time but haven't
+      // received meaningful work via events, check if there's active work via API
+      // Only check once to avoid unnecessary API calls every poll cycle
+      if (
+        Date.now() - pollStartTimestamp > secondaryMeaningfulWorkTimeoutMs &&
+        !secondaryTimeoutChecked
+      ) {
+        secondaryTimeoutChecked = true
+        // Check if session actually has pending work (children, todos, etc.)
+        const childrenRes = await ctx.client.session.children({
+          path: { id: ctx.sessionID },
+          query: { directory: ctx.directory },
+        })
+        const children = normalizeSDKResponse(childrenRes, [] as unknown[])
+        const todosRes = await ctx.client.session.todo({
+          path: { id: ctx.sessionID },
+          query: { directory: ctx.directory },
+        })
+        const todos = normalizeSDKResponse(todosRes, [] as unknown[])
+
+        const hasActiveChildren =
+          Array.isArray(children) && children.length > 0
+        const hasActiveTodos =
+          Array.isArray(todos) &&
+          todos.some(
+            (t: unknown) =>
+              (t as { status?: string })?.status !== "completed" &&
+              (t as { status?: string })?.status !== "cancelled"
+          )
+        const hasActiveWork = hasActiveChildren || hasActiveTodos
+
+        if (hasActiveWork) {
+          // Assume meaningful work is happening even without events
+          eventState.hasReceivedMeaningfulWork = true
+          console.log(
+            pc.yellow(
+              `\n  No meaningful work events for ${Math.round(
+                secondaryMeaningfulWorkTimeoutMs / 1000
+              )}s but session has active work - assuming in progress`
+            )
+          )
+        }
+      }
     } else {
       // Track when first meaningful work was received
       if (firstWorkTimestamp === null) {

src/config/schema/agent-overrides.ts

@@ -60,7 +60,9 @@ const BuiltinAgentOverridesSchema = z.object({
   build: AgentOverrideConfigSchema.optional(),
   plan: AgentOverrideConfigSchema.optional(),
   sisyphus: AgentOverrideConfigSchema.optional(),
-  hephaestus: AgentOverrideConfigSchema.optional(),
+  hephaestus: AgentOverrideConfigSchema.extend({
+    allow_non_gpt_model: z.boolean().optional(),
+  }).optional(),
   "sisyphus-junior": AgentOverrideConfigSchema.optional(),
   "OpenCode-Builder": AgentOverrideConfigSchema.optional(),
   prometheus: AgentOverrideConfigSchema.optional(),

src/config/schema/categories.ts

@@ -20,6 +20,7 @@ export const CategoryConfigSchema = z.object({
   textVerbosity: z.enum(["low", "medium", "high"]).optional(),
   tools: z.record(z.string(), z.boolean()).optional(),
   prompt_append: z.string().optional(),
+  max_prompt_tokens: z.number().int().positive().optional(),
   /** Mark agent as unstable - forces background mode for monitoring. Auto-enabled for gemini/minimax models. */
   is_unstable_agent: z.boolean().optional(),
   /** Disable this category. Disabled categories are excluded from task delegation. */

src/config/schema/oh-my-opencode-config.ts

@@ -27,7 +27,7 @@ export const OhMyOpenCodeConfigSchema = z.object({
   /** Default agent name for `oh-my-opencode run` (env: OPENCODE_DEFAULT_AGENT) */
   default_run_agent: z.string().optional(),
   disabled_mcps: z.array(AnyMcpNameSchema).optional(),
-  disabled_agents: z.array(BuiltinAgentNameSchema).optional(),
+  disabled_agents: z.array(z.string()).optional(),
   disabled_skills: z.array(BuiltinSkillNameSchema).optional(),
   disabled_hooks: z.array(z.string()).optional(),
   disabled_commands: z.array(BuiltinCommandNameSchema).optional(),

src/features/background-agent/concurrency.test.ts

@@ -34,7 +34,7 @@ describe("ConcurrencyManager.getConcurrencyLimit", () => {
   test("should return provider limit even when modelConcurrency exists but doesn't match", () => {
     // given
     const config: BackgroundTaskConfig = {
-      modelConcurrency: { "google/gemini-3-pro": 5 },
+      modelConcurrency: { "google/gemini-3.1-pro": 5 },
       providerConcurrency: { anthropic: 3 }
     }
     const manager = new ConcurrencyManager(config)
@@ -95,7 +95,7 @@ describe("ConcurrencyManager.getConcurrencyLimit", () => {
     // when
     const modelLimit = manager.getConcurrencyLimit("anthropic/claude-sonnet-4-6")
     const providerLimit = manager.getConcurrencyLimit("anthropic/claude-opus-4-6")
-    const defaultLimit = manager.getConcurrencyLimit("google/gemini-3-pro")
+    const defaultLimit = manager.getConcurrencyLimit("google/gemini-3.1-pro")
 
     // then
     expect(modelLimit).toBe(10)

src/features/background-agent/manager.test.ts

@@ -191,6 +191,10 @@ function getPendingByParent(manager: BackgroundManager): Map<string, Set<string>
   return (manager as unknown as { pendingByParent: Map<string, Set<string>> }).pendingByParent
 }
 
+function getPendingNotifications(manager: BackgroundManager): Map<string, string[]> {
+  return (manager as unknown as { pendingNotifications: Map<string, string[]> }).pendingNotifications
+}
+
 function getCompletionTimers(manager: BackgroundManager): Map<string, ReturnType<typeof setTimeout>> {
   return (manager as unknown as { completionTimers: Map<string, ReturnType<typeof setTimeout>> }).completionTimers
 }
@@ -1057,6 +1061,49 @@ describe("BackgroundManager.notifyParentSession - aborted parent", () => {
 
     manager.shutdown()
   })
+
+  test("should queue notification when promptAsync aborts while parent is idle", async () => {
+    //#given
+    const promptMock = async () => {
+      const error = new Error("Request aborted while waiting for input")
+      error.name = "MessageAbortedError"
+      throw error
+    }
+    const client = {
+      session: {
+        prompt: promptMock,
+        promptAsync: promptMock,
+        abort: async () => ({}),
+        messages: async () => ({ data: [] }),
+      },
+    }
+    const manager = new BackgroundManager({ client, directory: tmpdir() } as unknown as PluginInput)
+    const task: BackgroundTask = {
+      id: "task-aborted-idle-queue",
+      sessionID: "session-child",
+      parentSessionID: "session-parent",
+      parentMessageID: "msg-parent",
+      description: "task idle queue",
+      prompt: "test",
+      agent: "explore",
+      status: "completed",
+      startedAt: new Date(),
+      completedAt: new Date(),
+    }
+    getPendingByParent(manager).set("session-parent", new Set([task.id]))
+
+    //#when
+    await (manager as unknown as { notifyParentSession: (task: BackgroundTask) => Promise<void> })
+      .notifyParentSession(task)
+
+    //#then
+    const queuedNotifications = getPendingNotifications(manager).get("session-parent") ?? []
+    expect(queuedNotifications).toHaveLength(1)
+    expect(queuedNotifications[0]).toContain("<system-reminder>")
+    expect(queuedNotifications[0]).toContain("[ALL BACKGROUND TASKS COMPLETE]")
+
+    manager.shutdown()
+  })
 })
 
 describe("BackgroundManager.notifyParentSession - notifications toggle", () => {
@@ -1105,6 +1152,29 @@ describe("BackgroundManager.notifyParentSession - notifications toggle", () => {
   })
 })
 
+describe("BackgroundManager.injectPendingNotificationsIntoChatMessage", () => {
+  test("should prepend queued notifications to first text part and clear queue", () => {
+    // given
+    const manager = createBackgroundManager()
+    manager.queuePendingNotification("session-parent", "<system-reminder>queued-one</system-reminder>")
+    manager.queuePendingNotification("session-parent", "<system-reminder>queued-two</system-reminder>")
+    const output = {
+      parts: [{ type: "text", text: "User prompt" }],
+    }
+
+    // when
+    manager.injectPendingNotificationsIntoChatMessage(output, "session-parent")
+
+    // then
+    expect(output.parts[0].text).toContain("<system-reminder>queued-one</system-reminder>")
+    expect(output.parts[0].text).toContain("<system-reminder>queued-two</system-reminder>")
+    expect(output.parts[0].text).toContain("User prompt")
+    expect(getPendingNotifications(manager).get("session-parent")).toBeUndefined()
+
+    manager.shutdown()
+  })
+})
+
 function buildNotificationPromptBody(
   task: BackgroundTask,
   currentMessage: CurrentMessage | null

src/features/background-agent/manager.ts

@@ -93,6 +93,7 @@ export class BackgroundManager {
 
   private tasks: Map<string, BackgroundTask>
   private notifications: Map<string, BackgroundTask[]>
+  private pendingNotifications: Map<string, string[]>
   private pendingByParent: Map<string, Set<string>>  // Track pending tasks per parent for batching
   private client: OpencodeClient
   private directory: string
@@ -125,6 +126,7 @@ export class BackgroundManager {
   ) {
     this.tasks = new Map()
     this.notifications = new Map()
+    this.pendingNotifications = new Map()
     this.pendingByParent = new Map()
     this.client = ctx.client
     this.directory = ctx.directory
@@ -917,6 +919,32 @@ export class BackgroundManager {
     this.notifications.delete(sessionID)
   }
 
+  queuePendingNotification(sessionID: string | undefined, notification: string): void {
+    if (!sessionID) return
+    const existingNotifications = this.pendingNotifications.get(sessionID) ?? []
+    existingNotifications.push(notification)
+    this.pendingNotifications.set(sessionID, existingNotifications)
+  }
+
+  injectPendingNotificationsIntoChatMessage(output: { parts: Array<{ type: string; text?: string; [key: string]: unknown }> }, sessionID: string): void {
+    const pendingNotifications = this.pendingNotifications.get(sessionID)
+    if (!pendingNotifications || pendingNotifications.length === 0) {
+      return
+    }
+
+    this.pendingNotifications.delete(sessionID)
+    const notificationContent = pendingNotifications.join("\n\n")
+    const firstTextPartIndex = output.parts.findIndex((part) => part.type === "text")
+
+    if (firstTextPartIndex === -1) {
+      output.parts.unshift(createInternalAgentTextPart(notificationContent))
+      return
+    }
+
+    const originalText = output.parts[firstTextPartIndex].text ?? ""
+    output.parts[firstTextPartIndex].text = `${notificationContent}\n\n---\n\n${originalText}`
+  }
+
   /**
    * Validates that a session has actual assistant/tool output before marking complete.
    * Prevents premature completion when session.idle fires before agent responds.
@@ -1340,6 +1368,7 @@ Use \`background_output(task_id="${task.id}")\` to retrieve this result when rea
               taskId: task.id,
               parentSessionID: task.parentSessionID,
             })
+            this.queuePendingNotification(task.parentSessionID, notification)
           } else {
             log("[background-agent] Failed to send notification:", error)
           }
@@ -1568,6 +1597,7 @@ Use \`background_output(task_id="${task.id}")\` to retrieve this result when rea
     this.concurrencyManager.clear()
     this.tasks.clear()
     this.notifications.clear()
+    this.pendingNotifications.clear()
     this.pendingByParent.clear()
     this.notificationQueueByParent.clear()
     this.queuesByKey.clear()

src/features/boulder-state/storage.test.ts

@@ -269,6 +269,71 @@ describe("boulder-state", () => {
       expect(progress.isComplete).toBe(false)
     })
 
+    test("should count space-indented unchecked checkbox", () => {
+      // given - plan file with a two-space indented checkbox
+      const planPath = join(TEST_DIR, "space-indented-plan.md")
+      writeFileSync(planPath, `# Plan
+  - [ ] indented task
+`)
+
+      // when
+      const progress = getPlanProgress(planPath)
+
+      // then
+      expect(progress.total).toBe(1)
+      expect(progress.completed).toBe(0)
+      expect(progress.isComplete).toBe(false)
+    })
+
+    test("should count tab-indented unchecked checkbox", () => {
+      // given - plan file with a tab-indented checkbox
+      const planPath = join(TEST_DIR, "tab-indented-plan.md")
+      writeFileSync(planPath, `# Plan
+	- [ ] tab-indented task
+`)
+
+      // when
+      const progress = getPlanProgress(planPath)
+
+      // then
+      expect(progress.total).toBe(1)
+      expect(progress.completed).toBe(0)
+      expect(progress.isComplete).toBe(false)
+    })
+
+    test("should count mixed top-level checked and indented unchecked checkboxes", () => {
+      // given - plan file with checked top-level and unchecked indented task
+      const planPath = join(TEST_DIR, "mixed-indented-plan.md")
+      writeFileSync(planPath, `# Plan
+- [x] top-level completed task
+  - [ ] nested unchecked task
+`)
+
+      // when
+      const progress = getPlanProgress(planPath)
+
+      // then
+      expect(progress.total).toBe(2)
+      expect(progress.completed).toBe(1)
+      expect(progress.isComplete).toBe(false)
+    })
+
+    test("should count space-indented completed checkbox", () => {
+      // given - plan file with a two-space indented completed checkbox
+      const planPath = join(TEST_DIR, "indented-completed-plan.md")
+      writeFileSync(planPath, `# Plan
+  - [x] indented completed task
+`)
+
+      // when
+      const progress = getPlanProgress(planPath)
+
+      // then
+      expect(progress.total).toBe(1)
+      expect(progress.completed).toBe(1)
+      expect(progress.isComplete).toBe(true)
+    })
+
     test("should return isComplete true when all checked", () => {
       // given - all tasks completed
       const planPath = join(TEST_DIR, "complete-plan.md")

src/features/boulder-state/storage.ts

@@ -121,8 +121,8 @@ export function getPlanProgress(planPath: string): PlanProgress {
     const content = readFileSync(planPath, "utf-8")
     
     // Match markdown checkboxes: - [ ] or - [x] or - [X]
-    const uncheckedMatches = content.match(/^[-*]\s*\[\s*\]/gm) || []
-    const checkedMatches = content.match(/^[-*]\s*\[[xX]\]/gm) || []
+    const uncheckedMatches = content.match(/^\s*[-*]\s*\[\s*\]/gm) || []
+    const checkedMatches = content.match(/^\s*[-*]\s*\[[xX]\]/gm) || []
 
     const total = uncheckedMatches.length + checkedMatches.length
     const completed = checkedMatches.length
@@ -150,7 +150,8 @@ export function getPlanName(planPath: string): string {
 export function createBoulderState(
   planPath: string,
   sessionId: string,
-  agent?: string
+  agent?: string,
+  worktreePath?: string,
 ): BoulderState {
   return {
     active_plan: planPath,
@@ -158,5 +159,6 @@ export function createBoulderState(
     session_ids: [sessionId],
     plan_name: getPlanName(planPath),
     ...(agent !== undefined ? { agent } : {}),
+    ...(worktreePath !== undefined ? { worktree_path: worktreePath } : {}),
   }
 }

src/features/boulder-state/types.ts

@@ -16,6 +16,8 @@ export interface BoulderState {
   plan_name: string
   /** Agent type to use when resuming (e.g., 'atlas') */
   agent?: string
+  /** Absolute path to the git worktree root where work happens */
+  worktree_path?: string
 }
 
 export interface PlanProgress {

src/features/builtin-commands/templates/start-work.ts

@@ -1,5 +1,14 @@
 export const START_WORK_TEMPLATE = `You are starting a Sisyphus work session.
 
+## ARGUMENTS
+
+- \`/start-work [plan-name] [--worktree <path>]\`
+  - \`plan-name\` (optional): name or partial match of the plan to start
+  - \`--worktree <path>\` (optional): absolute path to an existing git worktree to work in
+    - If specified and valid: hook pre-sets worktree_path in boulder.json
+    - If specified but invalid: you must run \`git worktree add <path> <branch>\` first
+    - If omitted: you MUST choose or create a worktree (see Worktree Setup below)
+
 ## WHAT TO DO
 
 1. **Find available plans**: Search for Prometheus-generated plan files at \`.sisyphus/plans/\`
@@ -15,17 +24,24 @@ export const START_WORK_TEMPLATE = `You are starting a Sisyphus work session.
      - If ONE plan: auto-select it
      - If MULTIPLE plans: show list with timestamps, ask user to select
 
-4. **Create/Update boulder.json**:
+4. **Worktree Setup** (when \`worktree_path\` not already set in boulder.json):
+   1. \`git worktree list --porcelain\` — see available worktrees
+   2. Create: \`git worktree add <absolute-path> <branch-or-HEAD>\`
+   3. Update boulder.json to add \`"worktree_path": "<absolute-path>"\`
+   4. All work happens inside that worktree directory
+
+5. **Create/Update boulder.json**:
    \`\`\`json
    {
      "active_plan": "/absolute/path/to/plan.md",
      "started_at": "ISO_TIMESTAMP",
      "session_ids": ["session_id_1", "session_id_2"],
-     "plan_name": "plan-name"
+     "plan_name": "plan-name",
+     "worktree_path": "/absolute/path/to/git/worktree"
    }
    \`\`\`
 
-5. **Read the plan file** and start executing tasks according to atlas workflow
+6. **Read the plan file** and start executing tasks according to atlas workflow
 
 ## OUTPUT FORMAT
 
@@ -49,6 +65,7 @@ Resuming Work Session
 Active Plan: {plan-name}
 Progress: {completed}/{total} tasks
 Sessions: {count} (appending current session)
+Worktree: {worktree_path}
 
 Reading plan and continuing from last incomplete task...
 \`\`\`
@@ -60,6 +77,7 @@ Starting Work Session
 Plan: {plan-name}
 Session ID: {session_id}
 Started: {timestamp}
+Worktree: {worktree_path}
 
 Reading plan and beginning execution...
 \`\`\`
@@ -68,5 +86,6 @@ Reading plan and beginning execution...
 
 - The session_id is injected by the hook - use it directly
 - Always update boulder.json BEFORE starting work
+- Always set worktree_path in boulder.json before executing any tasks
 - Read the FULL plan file before delegating any tasks
 - Follow atlas delegation protocols (7-section format)`

src/features/task-toast-manager/manager.test.ts

@@ -162,7 +162,7 @@ describe("TaskToastManager", () => {
         description: "Task with category default model",
         agent: "sisyphus-junior",
         isBackground: false,
-        modelInfo: { model: "google/gemini-3-pro", type: "category-default" as const },
+        modelInfo: { model: "google/gemini-3.1-pro", type: "category-default" as const },
       }
 
       // when - addTask is called

src/hooks/anthropic-context-window-limit-recovery/state.ts

@@ -6,7 +6,7 @@ export function getOrCreateRetryState(
 ): RetryState {
   let state = autoCompactState.retryStateBySession.get(sessionID)
   if (!state) {
-    state = { attempt: 0, lastAttemptTime: 0 }
+    state = { attempt: 0, lastAttemptTime: 0, firstAttemptTime: 0 }
     autoCompactState.retryStateBySession.set(sessionID, state)
   }
   return state

src/hooks/anthropic-context-window-limit-recovery/summarize-retry-strategy.test.ts

@@ -0,0 +1,122 @@
+import { afterEach, beforeEach, describe, expect, mock, test } from "bun:test"
+import { runSummarizeRetryStrategy } from "./summarize-retry-strategy"
+import type { AutoCompactState, ParsedTokenLimitError, RetryState } from "./types"
+import type { OhMyOpenCodeConfig } from "../../config"
+
+type TimeoutCall = {
+  delay: number
+}
+
+function createAutoCompactState(): AutoCompactState {
+  return {
+    pendingCompact: new Set<string>(),
+    errorDataBySession: new Map<string, ParsedTokenLimitError>(),
+    retryStateBySession: new Map<string, RetryState>(),
+    truncateStateBySession: new Map(),
+    emptyContentAttemptBySession: new Map(),
+    compactionInProgress: new Set<string>(),
+  }
+}
+
+describe("runSummarizeRetryStrategy", () => {
+  const sessionID = "ses_retry_timeout"
+  const directory = "/tmp"
+  let autoCompactState: AutoCompactState
+
+  const summarizeMock = mock(() => Promise.resolve())
+  const showToastMock = mock(() => Promise.resolve())
+  const client = {
+    session: {
+      summarize: summarizeMock,
+      messages: mock(() => Promise.resolve({ data: [] })),
+      promptAsync: mock(() => Promise.resolve()),
+      revert: mock(() => Promise.resolve()),
+    },
+    tui: {
+      showToast: showToastMock,
+    },
+  }
+
+  beforeEach(() => {
+    autoCompactState = createAutoCompactState()
+    summarizeMock.mockReset()
+    showToastMock.mockReset()
+    summarizeMock.mockResolvedValue(undefined)
+    showToastMock.mockResolvedValue(undefined)
+  })
+
+  afterEach(() => {
+    globalThis.setTimeout = originalSetTimeout
+  })
+
+  const originalSetTimeout = globalThis.setTimeout
+
+  test("stops retries when total summarize timeout is exceeded", async () => {
+    //#given
+    autoCompactState.pendingCompact.add(sessionID)
+    autoCompactState.errorDataBySession.set(sessionID, {
+      currentTokens: 250000,
+      maxTokens: 200000,
+      errorType: "token_limit_exceeded",
+    })
+    autoCompactState.retryStateBySession.set(sessionID, {
+      attempt: 1,
+      lastAttemptTime: Date.now(),
+      firstAttemptTime: Date.now() - 130000,
+    })
+
+    //#when
+    await runSummarizeRetryStrategy({
+      sessionID,
+      msg: { providerID: "anthropic", modelID: "claude-sonnet-4-6" },
+      autoCompactState,
+      client: client as never,
+      directory,
+      pluginConfig: {} as OhMyOpenCodeConfig,
+    })
+
+    //#then
+    expect(summarizeMock).not.toHaveBeenCalled()
+    expect(autoCompactState.pendingCompact.has(sessionID)).toBe(false)
+    expect(autoCompactState.errorDataBySession.has(sessionID)).toBe(false)
+    expect(autoCompactState.retryStateBySession.has(sessionID)).toBe(false)
+    expect(showToastMock).toHaveBeenCalledWith(
+      expect.objectContaining({
+        body: expect.objectContaining({
+          title: "Auto Compact Timed Out",
+        }),
+      }),
+    )
+  })
+
+  test("caps retry delay by remaining total timeout window", async () => {
+    //#given
+    const timeoutCalls: TimeoutCall[] = []
+    globalThis.setTimeout = ((_: (...args: unknown[]) => void, delay?: number) => {
+      timeoutCalls.push({ delay: delay ?? 0 })
+      return 1 as unknown as ReturnType<typeof setTimeout>
+    }) as typeof setTimeout
+
+    autoCompactState.retryStateBySession.set(sessionID, {
+      attempt: 1,
+      lastAttemptTime: Date.now(),
+      firstAttemptTime: Date.now() - 119700,
+    })
+    summarizeMock.mockRejectedValueOnce(new Error("rate limited"))
+
+    //#when
+    await runSummarizeRetryStrategy({
+      sessionID,
+      msg: { providerID: "anthropic", modelID: "claude-sonnet-4-6" },
+      autoCompactState,
+      client: client as never,
+      directory,
+      pluginConfig: {} as OhMyOpenCodeConfig,
+    })
+
+    //#then
+    expect(timeoutCalls.length).toBe(1)
+    expect(timeoutCalls[0]!.delay).toBeGreaterThan(0)
+    expect(timeoutCalls[0]!.delay).toBeLessThanOrEqual(500)
+  })
+})

src/hooks/anthropic-context-window-limit-recovery/summarize-retry-strategy.ts

@@ -7,6 +7,8 @@ import { sanitizeEmptyMessagesBeforeSummarize } from "./message-builder"
 import { fixEmptyMessages } from "./empty-content-recovery"
 
 import { resolveCompactionModel } from "../shared/compaction-model-resolver"
+
+const SUMMARIZE_RETRY_TOTAL_TIMEOUT_MS = 120_000
 export async function runSummarizeRetryStrategy(params: {
   sessionID: string
   msg: Record<string, unknown>
@@ -18,6 +20,27 @@ export async function runSummarizeRetryStrategy(params: {
   messageIndex?: number
 }): Promise<void> {
   const retryState = getOrCreateRetryState(params.autoCompactState, params.sessionID)
+  const now = Date.now()
+
+  if (retryState.firstAttemptTime === 0) {
+    retryState.firstAttemptTime = now
+  }
+
+  const elapsedTimeMs = now - retryState.firstAttemptTime
+  if (elapsedTimeMs >= SUMMARIZE_RETRY_TOTAL_TIMEOUT_MS) {
+    clearSessionState(params.autoCompactState, params.sessionID)
+    await params.client.tui
+      .showToast({
+        body: {
+          title: "Auto Compact Timed Out",
+          message: "Compaction retries exceeded the timeout window. Please start a new session.",
+          variant: "error",
+          duration: 5000,
+        },
+      })
+      .catch(() => {})
+    return
+  }
 
   if (params.errorType?.includes("non-empty content")) {
     const attempt = getEmptyContentAttempt(params.autoCompactState, params.sessionID)
@@ -52,6 +75,7 @@ export async function runSummarizeRetryStrategy(params: {
 
   if (Date.now() - retryState.lastAttemptTime > 300000) {
     retryState.attempt = 0
+    retryState.firstAttemptTime = Date.now()
     params.autoCompactState.truncateStateBySession.delete(params.sessionID)
   }
 
@@ -92,10 +116,26 @@ export async function runSummarizeRetryStrategy(params: {
         })
         return
       } catch {
+        const remainingTimeMs = SUMMARIZE_RETRY_TOTAL_TIMEOUT_MS - (Date.now() - retryState.firstAttemptTime)
+        if (remainingTimeMs <= 0) {
+          clearSessionState(params.autoCompactState, params.sessionID)
+          await params.client.tui
+            .showToast({
+              body: {
+                title: "Auto Compact Timed Out",
+                message: "Compaction retries exceeded the timeout window. Please start a new session.",
+                variant: "error",
+                duration: 5000,
+              },
+            })
+            .catch(() => {})
+          return
+        }
+
         const delay =
           RETRY_CONFIG.initialDelayMs *
           Math.pow(RETRY_CONFIG.backoffFactor, retryState.attempt - 1)
-        const cappedDelay = Math.min(delay, RETRY_CONFIG.maxDelayMs)
+        const cappedDelay = Math.min(delay, RETRY_CONFIG.maxDelayMs, remainingTimeMs)
 
         setTimeout(() => {
           void runSummarizeRetryStrategy(params)

src/hooks/anthropic-context-window-limit-recovery/types.ts

@@ -11,6 +11,7 @@ export interface ParsedTokenLimitError {
 export interface RetryState {
   attempt: number
   lastAttemptTime: number
+  firstAttemptTime: number
 }
 
 export interface TruncateState {

src/hooks/atlas/boulder-continuation-injector.ts

@@ -14,6 +14,7 @@ export async function injectBoulderContinuation(input: {
   remaining: number
   total: number
   agent?: string
+  worktreePath?: string
   backgroundManager?: BackgroundManager
   sessionState: SessionState
 }): Promise<void> {
@@ -24,6 +25,7 @@ export async function injectBoulderContinuation(input: {
     remaining,
     total,
     agent,
+    worktreePath,
     backgroundManager,
     sessionState,
   } = input
@@ -37,9 +39,11 @@ export async function injectBoulderContinuation(input: {
     return
   }
 
+  const worktreeContext = worktreePath ? `\n\n[Worktree: ${worktreePath}]` : ""
   const prompt =
     BOULDER_CONTINUATION_PROMPT.replace(/{PLAN_NAME}/g, planName) +
-    `\n\n[Status: ${total - remaining}/${total} completed, ${remaining} remaining]`
+    `\n\n[Status: ${total - remaining}/${total} completed, ${remaining} remaining]` +
+    worktreeContext
 
   try {
     log(`[${HOOK_NAME}] Injecting boulder continuation`, { sessionID, planName, remaining })
@@ -62,6 +66,7 @@ export async function injectBoulderContinuation(input: {
     log(`[${HOOK_NAME}] Boulder continuation injected`, { sessionID })
   } catch (err) {
     sessionState.promptFailureCount += 1
+    sessionState.lastFailureAt = Date.now()
     log(`[${HOOK_NAME}] Boulder continuation failed`, {
       sessionID,
       error: String(err),

src/hooks/atlas/event-handler.ts

@@ -10,6 +10,7 @@ import { getLastAgentFromSession } from "./session-last-agent"
 import type { AtlasHookOptions, SessionState } from "./types"
 
 const CONTINUATION_COOLDOWN_MS = 5000
+const FAILURE_BACKOFF_MS = 5 * 60 * 1000
 
 export function createAtlasEventHandler(input: {
   ctx: PluginInput
@@ -53,6 +54,7 @@ export function createAtlasEventHandler(input: {
       }
 
       const state = getState(sessionID)
+      const now = Date.now()
 
       if (state.lastEventWasAbortError) {
         state.lastEventWasAbortError = false
@@ -61,11 +63,18 @@ export function createAtlasEventHandler(input: {
       }
 
       if (state.promptFailureCount >= 2) {
-        log(`[${HOOK_NAME}] Skipped: continuation disabled after repeated prompt failures`, {
-          sessionID,
-          promptFailureCount: state.promptFailureCount,
-        })
-        return
+        const timeSinceLastFailure = state.lastFailureAt !== undefined ? now - state.lastFailureAt : Number.POSITIVE_INFINITY
+        if (timeSinceLastFailure < FAILURE_BACKOFF_MS) {
+          log(`[${HOOK_NAME}] Skipped: continuation in backoff after repeated failures`, {
+            sessionID,
+            promptFailureCount: state.promptFailureCount,
+            backoffRemaining: FAILURE_BACKOFF_MS - timeSinceLastFailure,
+          })
+          return
+        }
+
+        state.promptFailureCount = 0
+        state.lastFailureAt = undefined
       }
 
       const backgroundManager = options?.backgroundManager
@@ -92,17 +101,15 @@ export function createAtlasEventHandler(input: {
       const lastAgentKey = getAgentConfigKey(lastAgent ?? "")
       const requiredAgent = getAgentConfigKey(boulderState.agent ?? "atlas")
       const lastAgentMatchesRequired = lastAgentKey === requiredAgent
-      const boulderAgentWasNotExplicitlySet = boulderState.agent === undefined
       const boulderAgentDefaultsToAtlas = requiredAgent === "atlas"
       const lastAgentIsSisyphus = lastAgentKey === "sisyphus"
-      const allowSisyphusWhenDefaultAtlas = boulderAgentWasNotExplicitlySet && boulderAgentDefaultsToAtlas && lastAgentIsSisyphus
-      const agentMatches = lastAgentMatchesRequired || allowSisyphusWhenDefaultAtlas
+      const allowSisyphusForAtlasBoulder = boulderAgentDefaultsToAtlas && lastAgentIsSisyphus
+      const agentMatches = lastAgentMatchesRequired || allowSisyphusForAtlasBoulder
       if (!agentMatches) {
         log(`[${HOOK_NAME}] Skipped: last agent does not match boulder agent`, {
           sessionID,
           lastAgent: lastAgent ?? "unknown",
           requiredAgent,
-          boulderAgentExplicitlySet: boulderState.agent !== undefined,
         })
         return
       }
@@ -113,7 +120,6 @@ export function createAtlasEventHandler(input: {
         return
       }
 
-      const now = Date.now()
       if (state.lastContinuationInjectedAt && now - state.lastContinuationInjectedAt < CONTINUATION_COOLDOWN_MS) {
         log(`[${HOOK_NAME}] Skipped: continuation cooldown active`, {
           sessionID,
@@ -132,6 +138,7 @@ export function createAtlasEventHandler(input: {
           remaining,
           total: progress.total,
           agent: boulderState.agent,
+          worktreePath: boulderState.worktree_path,
           backgroundManager,
           sessionState: state,
         })

src/hooks/atlas/index.test.ts

@@ -933,8 +933,8 @@ describe("atlas hook", () => {
       expect(callArgs.body.parts[0].text).toContain("2 remaining")
     })
 
-     test("should not inject when last agent does not match boulder agent", async () => {
-       // given - boulder state with incomplete plan, but last agent does NOT match
+     test("should inject when last agent is sisyphus and boulder targets atlas explicitly", async () => {
+       // given - boulder explicitly set to atlas, but last agent is sisyphus (initial state after /start-work)
        const planPath = join(TEST_DIR, "test-plan.md")
        writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
 
@@ -947,7 +947,7 @@ describe("atlas hook", () => {
        }
        writeBoulderState(TEST_DIR, state)
 
-       // given - last agent is NOT the boulder agent
+       // given - last agent is sisyphus (typical state right after /start-work)
        cleanupMessageStorage(MAIN_SESSION_ID)
        setupMessageStorage(MAIN_SESSION_ID, "sisyphus")
 
@@ -962,7 +962,39 @@ describe("atlas hook", () => {
          },
        })
 
-       // then - should NOT call prompt because agent does not match
+       // then - should call prompt because sisyphus is always allowed for atlas boulders
+       expect(mockInput._promptMock).toHaveBeenCalled()
+     })
+
+     test("should not inject when last agent is non-sisyphus and does not match boulder agent", async () => {
+       // given - boulder explicitly set to atlas, last agent is hephaestus (unrelated agent)
+       const planPath = join(TEST_DIR, "test-plan.md")
+       writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
+
+       const state: BoulderState = {
+         active_plan: planPath,
+         started_at: "2026-01-02T10:00:00Z",
+         session_ids: [MAIN_SESSION_ID],
+         plan_name: "test-plan",
+         agent: "atlas",
+       }
+       writeBoulderState(TEST_DIR, state)
+
+       cleanupMessageStorage(MAIN_SESSION_ID)
+       setupMessageStorage(MAIN_SESSION_ID, "hephaestus")
+
+       const mockInput = createMockPluginInput()
+       const hook = createAtlasHook(mockInput)
+
+       // when
+       await hook.handler({
+         event: {
+           type: "session.idle",
+           properties: { sessionID: MAIN_SESSION_ID },
+         },
+       })
+
+       // then - should NOT call prompt because hephaestus does not match atlas or sisyphus
        expect(mockInput._promptMock).not.toHaveBeenCalled()
      })
 
@@ -1122,6 +1154,144 @@ describe("atlas hook", () => {
       }
     })
 
+    test("should keep skipping continuation during 5-minute backoff after 2 consecutive failures", async () => {
+      //#given - boulder state with incomplete plan and prompt always fails
+      const planPath = join(TEST_DIR, "test-plan.md")
+      writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
+
+      const state: BoulderState = {
+        active_plan: planPath,
+        started_at: "2026-01-02T10:00:00Z",
+        session_ids: [MAIN_SESSION_ID],
+        plan_name: "test-plan",
+      }
+      writeBoulderState(TEST_DIR, state)
+
+      const promptMock = mock(() => Promise.reject(new Error("Bad Request")))
+      const mockInput = createMockPluginInput({ promptMock })
+      const hook = createAtlasHook(mockInput)
+
+      const originalDateNow = Date.now
+      let now = 0
+      Date.now = () => now
+
+      try {
+        //#when - third idle occurs inside 5-minute backoff window
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 60000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+
+        //#then - third attempt should still be skipped
+        expect(promptMock).toHaveBeenCalledTimes(2)
+      } finally {
+        Date.now = originalDateNow
+      }
+    })
+
+    test("should retry continuation after 5-minute backoff expires following 2 consecutive failures", async () => {
+      //#given - boulder state with incomplete plan and prompt always fails
+      const planPath = join(TEST_DIR, "test-plan.md")
+      writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
+
+      const state: BoulderState = {
+        active_plan: planPath,
+        started_at: "2026-01-02T10:00:00Z",
+        session_ids: [MAIN_SESSION_ID],
+        plan_name: "test-plan",
+      }
+      writeBoulderState(TEST_DIR, state)
+
+      const promptMock = mock(() => Promise.reject(new Error("Bad Request")))
+      const mockInput = createMockPluginInput({ promptMock })
+      const hook = createAtlasHook(mockInput)
+
+      const originalDateNow = Date.now
+      let now = 0
+      Date.now = () => now
+
+      try {
+        //#when - third idle occurs after 5+ minutes
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 300000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+
+        //#then - third attempt should run after backoff expiration
+        expect(promptMock).toHaveBeenCalledTimes(3)
+      } finally {
+        Date.now = originalDateNow
+      }
+    })
+
+    test("should reset prompt failure counter after successful retry beyond backoff window", async () => {
+      //#given - boulder state with incomplete plan and success on first retry after backoff
+      const planPath = join(TEST_DIR, "test-plan.md")
+      writeFileSync(planPath, "# Plan\n- [ ] Task 1\n- [ ] Task 2")
+
+      const state: BoulderState = {
+        active_plan: planPath,
+        started_at: "2026-01-02T10:00:00Z",
+        session_ids: [MAIN_SESSION_ID],
+        plan_name: "test-plan",
+      }
+      writeBoulderState(TEST_DIR, state)
+
+      const promptMock = mock((): Promise<void> => Promise.reject(new Error("Bad Request")))
+      promptMock.mockImplementationOnce(() => Promise.reject(new Error("Bad Request")))
+      promptMock.mockImplementationOnce(() => Promise.reject(new Error("Bad Request")))
+      promptMock.mockImplementationOnce(() => Promise.resolve(undefined))
+      const mockInput = createMockPluginInput({ promptMock })
+      const hook = createAtlasHook(mockInput)
+
+      const originalDateNow = Date.now
+      let now = 0
+      Date.now = () => now
+
+      try {
+        //#when - fail twice, recover after backoff with success, then fail twice again
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 300000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+        now += 6000
+
+        await hook.handler({ event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } } })
+        await flushMicrotasks()
+
+        //#then - success retry resets counter, so two additional failures are allowed before skip
+        expect(promptMock).toHaveBeenCalledTimes(5)
+      } finally {
+        Date.now = originalDateNow
+      }
+    })
+
     test("should reset continuation failure state on session.compacted event", async () => {
       //#given - boulder state with incomplete plan and prompt always fails
       const planPath = join(TEST_DIR, "test-plan.md")

src/hooks/atlas/types.ts

@@ -26,4 +26,5 @@ export interface SessionState {
   lastEventWasAbortError?: boolean
   lastContinuationInjectedAt?: number
   promptFailureCount: number
+  lastFailureAt?: number
 }

src/hooks/background-notification/hook.ts

@@ -9,6 +9,14 @@ interface EventInput {
   event: Event
 }
 
+interface ChatMessageInput {
+  sessionID: string
+}
+
+interface ChatMessageOutput {
+  parts: Array<{ type: string; text?: string; [key: string]: unknown }>
+}
+
 /**
  * Background notification hook - handles event routing to BackgroundManager.
  *
@@ -20,7 +28,15 @@ export function createBackgroundNotificationHook(manager: BackgroundManager) {
     manager.handleEvent(event)
   }
 
+  const chatMessageHandler = async (
+    input: ChatMessageInput,
+    output: ChatMessageOutput,
+  ): Promise<void> => {
+    manager.injectPendingNotificationsIntoChatMessage(output, input.sessionID)
+  }
+
   return {
+    "chat.message": chatMessageHandler,
     event: eventHandler,
   }
 }

src/hooks/interactive-bash-session/interactive-bash-session-tracker.ts

@@ -6,6 +6,7 @@ import {
 import { OMO_SESSION_PREFIX, buildSessionReminderMessage } from "./constants";
 import type { InteractiveBashSessionState } from "./types";
 import { subagentSessions } from "../../features/claude-code-session-state";
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide";
 
 type AbortSession = (args: { path: { id: string } }) => Promise<unknown>
 
@@ -19,7 +20,7 @@ async function killAllTrackedSessions(
 ): Promise<void> {
   for (const sessionName of state.tmuxSessions) {
     try {
-      const proc = Bun.spawn(["tmux", "kill-session", "-t", sessionName], {
+      const proc = spawnWithWindowsHide(["tmux", "kill-session", "-t", sessionName], {
         stdout: "ignore",
         stderr: "ignore",
       })

src/hooks/interactive-bash-session/state-manager.ts

@@ -1,6 +1,7 @@
 import type { InteractiveBashSessionState } from "./types";
 import { loadInteractiveBashSessionState } from "./storage";
 import { OMO_SESSION_PREFIX } from "./constants";
+import { spawnWithWindowsHide } from "../../shared/spawn-with-windows-hide";
 
 export function getOrCreateState(sessionID: string, sessionStates: Map<string, InteractiveBashSessionState>): InteractiveBashSessionState {
   if (!sessionStates.has(sessionID)) {
@@ -24,7 +25,7 @@ export async function killAllTrackedSessions(
 ): Promise<void> {
   for (const sessionName of state.tmuxSessions) {
     try {
-      const proc = Bun.spawn(["tmux", "kill-session", "-t", sessionName], {
+      const proc = spawnWithWindowsHide(["tmux", "kill-session", "-t", sessionName], {
         stdout: "ignore",
         stderr: "ignore",
       });

src/hooks/no-hephaestus-non-gpt/hook.ts

@@ -12,12 +12,16 @@ const TOAST_MESSAGE = [
 ].join("\n")
 const SISYPHUS_DISPLAY = getAgentDisplayName("sisyphus")
 
-function showToast(ctx: PluginInput, sessionID: string): void {
+type NoHephaestusNonGptHookOptions = {
+  allowNonGptModel?: boolean
+}
+
+function showToast(ctx: PluginInput, sessionID: string, variant: "error" | "warning"): void {
   ctx.client.tui.showToast({
     body: {
       title: TOAST_TITLE,
       message: TOAST_MESSAGE,
-      variant: "error",
+      variant,
       duration: 10000,
     },
   }).catch((error) => {
@@ -28,7 +32,10 @@ function showToast(ctx: PluginInput, sessionID: string): void {
   })
 }
 
-export function createNoHephaestusNonGptHook(ctx: PluginInput) {
+export function createNoHephaestusNonGptHook(
+  ctx: PluginInput,
+  options?: NoHephaestusNonGptHookOptions,
+) {
   return {
     "chat.message": async (input: {
       sessionID: string
@@ -40,9 +47,13 @@ export function createNoHephaestusNonGptHook(ctx: PluginInput) {
       const rawAgent = input.agent ?? getSessionAgent(input.sessionID) ?? ""
       const agentKey = getAgentConfigKey(rawAgent)
       const modelID = input.model?.modelID
+      const allowNonGptModel = options?.allowNonGptModel === true
 
       if (agentKey === "hephaestus" && modelID && !isGptModel(modelID)) {
-        showToast(ctx, input.sessionID)
+        showToast(ctx, input.sessionID, allowNonGptModel ? "warning" : "error")
+        if (allowNonGptModel) {
+          return
+        }
         input.agent = SISYPHUS_DISPLAY
         if (output?.message) {
           output.message.agent = SISYPHUS_DISPLAY

src/hooks/no-hephaestus-non-gpt/index.test.ts

@@ -1,3 +1,5 @@
+/// <reference types="bun-types" />
+
 import { describe, expect, spyOn, test } from "bun:test"
 import { _resetForTesting, updateSessionAgent } from "../../features/claude-code-session-state"
 import { getAgentDisplayName } from "../../shared/agent-display-names"
@@ -8,7 +10,7 @@ const SISYPHUS_DISPLAY = getAgentDisplayName("sisyphus")
 
 function createOutput() {
   return {
-    message: {},
+    message: {} as { agent?: string; [key: string]: unknown },
     parts: [],
   }
 }
@@ -16,7 +18,7 @@ function createOutput() {
 describe("no-hephaestus-non-gpt hook", () => {
   test("shows toast on every chat.message when hephaestus uses non-gpt model", async () => {
     // given - hephaestus with claude model
-    const showToast = spyOn({ fn: async () => ({}) }, "fn")
+    const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
     const hook = createNoHephaestusNonGptHook({
       client: { tui: { showToast } },
     } as any)
@@ -49,9 +51,38 @@ describe("no-hephaestus-non-gpt hook", () => {
     })
   })
 
+  test("shows warning and does not switch agent when allow_non_gpt_model is enabled", async () => {
+    // given - hephaestus with claude model and opt-out enabled
+    const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
+    const hook = createNoHephaestusNonGptHook({
+      client: { tui: { showToast } },
+    } as any, {
+      allowNonGptModel: true,
+    })
+
+    const output = createOutput()
+
+    // when - chat.message runs
+    await hook["chat.message"]?.({
+      sessionID: "ses_opt_out",
+      agent: HEPHAESTUS_DISPLAY,
+      model: { providerID: "anthropic", modelID: "claude-opus-4-6" },
+    }, output)
+
+    // then - warning toast is shown but agent is not switched
+    expect(showToast).toHaveBeenCalledTimes(1)
+    expect(output.message.agent).toBeUndefined()
+    expect(showToast.mock.calls[0]?.[0]).toMatchObject({
+      body: {
+        title: "NEVER Use Hephaestus with Non-GPT",
+        variant: "warning",
+      },
+    })
+  })
+
   test("does not show toast when hephaestus uses gpt model", async () => {
     // given - hephaestus with gpt model
-    const showToast = spyOn({ fn: async () => ({}) }, "fn")
+    const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
     const hook = createNoHephaestusNonGptHook({
       client: { tui: { showToast } },
     } as any)
@@ -72,7 +103,7 @@ describe("no-hephaestus-non-gpt hook", () => {
 
   test("does not show toast for non-hephaestus agent", async () => {
     // given - sisyphus with claude model (non-gpt)
-    const showToast = spyOn({ fn: async () => ({}) }, "fn")
+    const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
     const hook = createNoHephaestusNonGptHook({
       client: { tui: { showToast } },
     } as any)
@@ -95,7 +126,7 @@ describe("no-hephaestus-non-gpt hook", () => {
     // given - session agent saved as hephaestus
     _resetForTesting()
     updateSessionAgent("ses_4", HEPHAESTUS_DISPLAY)
-    const showToast = spyOn({ fn: async () => ({}) }, "fn")
+    const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
     const hook = createNoHephaestusNonGptHook({
       client: { tui: { showToast } },
     } as any)

src/hooks/preemptive-compaction.test.ts

@@ -45,6 +45,23 @@ function createMockCtx() {
   }
 }
 
+function setupImmediateTimeouts(): () => void {
+  const originalSetTimeout = globalThis.setTimeout
+  const originalClearTimeout = globalThis.clearTimeout
+
+  globalThis.setTimeout = ((callback: (...args: unknown[]) => void, _delay?: number, ...args: unknown[]) => {
+    callback(...args)
+    return 1 as unknown as ReturnType<typeof setTimeout>
+  }) as typeof setTimeout
+
+  globalThis.clearTimeout = (() => {}) as typeof clearTimeout
+
+  return () => {
+    globalThis.setTimeout = originalSetTimeout
+    globalThis.clearTimeout = originalClearTimeout
+  }
+}
+
 describe("preemptive-compaction", () => {
   let ctx: ReturnType<typeof createMockCtx>
 
@@ -63,7 +80,7 @@ describe("preemptive-compaction", () => {
   // #when tool.execute.after is called
   // #then session.messages() should NOT be called
   it("should use cached token info instead of fetching session.messages()", async () => {
-    const hook = createPreemptiveCompactionHook(ctx as never)
+    const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
     const sessionID = "ses_test1"
 
     // Simulate message.updated with token info below threshold
@@ -101,7 +118,7 @@ describe("preemptive-compaction", () => {
   // #when tool.execute.after is called
   // #then should skip without fetching
   it("should skip gracefully when no cached token info exists", async () => {
-    const hook = createPreemptiveCompactionHook(ctx as never)
+    const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
 
     const output = { title: "", output: "test", metadata: null }
     await hook["tool.execute.after"](
@@ -116,7 +133,7 @@ describe("preemptive-compaction", () => {
   // #when tool.execute.after runs
   // #then should trigger summarize
   it("should trigger compaction when usage exceeds threshold", async () => {
-    const hook = createPreemptiveCompactionHook(ctx as never)
+    const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
     const sessionID = "ses_high"
 
     // 170K input + 10K cache = 180K → 90% of 200K
@@ -153,7 +170,7 @@ describe("preemptive-compaction", () => {
 
   it("should trigger compaction for google-vertex-anthropic provider", async () => {
     //#given google-vertex-anthropic usage above threshold
-    const hook = createPreemptiveCompactionHook(ctx as never)
+    const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
     const sessionID = "ses_vertex_anthropic_high"
 
     await hook.event({
@@ -191,7 +208,7 @@ describe("preemptive-compaction", () => {
   // #given session deleted
   // #then cache should be cleaned up
   it("should clean up cache on session.deleted", async () => {
-    const hook = createPreemptiveCompactionHook(ctx as never)
+    const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
     const sessionID = "ses_del"
 
     await hook.event({
@@ -228,7 +245,7 @@ describe("preemptive-compaction", () => {
 
   it("should log summarize errors instead of swallowing them", async () => {
     //#given
-    const hook = createPreemptiveCompactionHook(ctx as never)
+    const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
     const sessionID = "ses_log_error"
     const summarizeError = new Error("summarize failed")
     ctx.client.session.summarize.mockRejectedValueOnce(summarizeError)
@@ -343,4 +360,58 @@ describe("preemptive-compaction", () => {
     //#then
     expect(ctx.client.session.summarize).not.toHaveBeenCalled()
   })
+
+  it("should clear in-progress lock when summarize times out", async () => {
+    //#given
+    const restoreTimeouts = setupImmediateTimeouts()
+    const hook = createPreemptiveCompactionHook(ctx as never, {} as never)
+    const sessionID = "ses_timeout"
+
+    ctx.client.session.summarize
+      .mockImplementationOnce(() => new Promise(() => {}))
+      .mockResolvedValueOnce({})
+
+    try {
+      await hook.event({
+        event: {
+          type: "message.updated",
+          properties: {
+            info: {
+              role: "assistant",
+              sessionID,
+              providerID: "anthropic",
+              modelID: "claude-sonnet-4-6",
+              finish: true,
+              tokens: {
+                input: 170000,
+                output: 0,
+                reasoning: 0,
+                cache: { read: 10000, write: 0 },
+              },
+            },
+          },
+        },
+      })
+
+      //#when
+      await hook["tool.execute.after"](
+        { tool: "bash", sessionID, callID: "call_timeout_1" },
+        { title: "", output: "test", metadata: null },
+      )
+
+      await hook["tool.execute.after"](
+        { tool: "bash", sessionID, callID: "call_timeout_2" },
+        { title: "", output: "test", metadata: null },
+      )
+
+      //#then
+      expect(ctx.client.session.summarize).toHaveBeenCalledTimes(2)
+      expect(logMock).toHaveBeenCalledWith("[preemptive-compaction] Compaction failed", {
+        sessionID,
+        error: expect.stringContaining("Compaction summarize timed out"),
+      })
+    } finally {
+      restoreTimeouts()
+    }
+  })
 })

src/hooks/preemptive-compaction.ts

@@ -3,6 +3,7 @@ import type { OhMyOpenCodeConfig } from "../config"
 
 import { resolveCompactionModel } from "./shared/compaction-model-resolver"
 const DEFAULT_ACTUAL_LIMIT = 200_000
+const PREEMPTIVE_COMPACTION_TIMEOUT_MS = 120_000
 
 type ModelCacheStateLike = {
   anthropicContext1MEnabled: boolean
@@ -31,6 +32,26 @@ interface CachedCompactionState {
   tokens: TokenInfo
 }
 
+function withTimeout<TValue>(
+  promise: Promise<TValue>,
+  timeoutMs: number,
+  errorMessage: string,
+): Promise<TValue> {
+  let timeoutID: ReturnType<typeof setTimeout> | undefined
+
+  const timeoutPromise = new Promise<never>((_, reject) => {
+    timeoutID = setTimeout(() => {
+      reject(new Error(errorMessage))
+    }, timeoutMs)
+  })
+
+  return Promise.race([promise, timeoutPromise]).finally(() => {
+    if (timeoutID !== undefined) {
+      clearTimeout(timeoutID)
+    }
+  })
+}
+
 function isAnthropicProvider(providerID: string): boolean {
   return providerID === "anthropic" || providerID === "google-vertex-anthropic"
 }
@@ -94,11 +115,15 @@ export function createPreemptiveCompactionHook(
         modelID
       )
 
-      await ctx.client.session.summarize({
-        path: { id: sessionID },
-        body: { providerID: targetProviderID, modelID: targetModelID, auto: true } as never,
-        query: { directory: ctx.directory },
-      })
+      await withTimeout(
+        ctx.client.session.summarize({
+          path: { id: sessionID },
+          body: { providerID: targetProviderID, modelID: targetModelID, auto: true } as never,
+          query: { directory: ctx.directory },
+        }),
+        PREEMPTIVE_COMPACTION_TIMEOUT_MS,
+        `Compaction summarize timed out after ${PREEMPTIVE_COMPACTION_TIMEOUT_MS}ms`,
+      )
 
       compactedSessions.add(sessionID)
     } catch (error) {

src/hooks/ralph-loop/completion-promise-detector.ts

@@ -79,8 +79,8 @@ export async function detectCompletionInSessionMessages(
 		if (assistantMessages.length === 0) return false
 
 		const pattern = buildPromisePattern(options.promise)
-		const recentAssistants = assistantMessages.slice(-3)
-		for (const assistant of recentAssistants) {
+		for (let index = assistantMessages.length - 1; index >= 0; index -= 1) {
+			const assistant = assistantMessages[index]
 			if (!assistant.parts) continue
 
 			let responseText = ""

src/hooks/ralph-loop/index.test.ts

@@ -494,6 +494,7 @@ describe("ralph-loop", () => {
         config: {
           enabled: true,
           default_max_iterations: 200,
+          default_strategy: "continue",
         },
       })
 
@@ -708,6 +709,57 @@ describe("ralph-loop", () => {
       expect(promptCalls[0].text).toContain("<promise>CALCULATOR_DONE</promise>")
     })
 
+    test("should skip concurrent idle events for same session when handler is in flight", async () => {
+      // given - active loop with delayed prompt injection
+      let releasePromptAsync: (() => void) | undefined
+      const promptAsyncBlocked = new Promise<void>((resolve) => {
+        releasePromptAsync = resolve
+      })
+      let firstPromptStartedResolve: (() => void) | undefined
+      const firstPromptStarted = new Promise<void>((resolve) => {
+        firstPromptStartedResolve = resolve
+      })
+
+      const mockInput = createMockPluginInput() as {
+        client: {
+          session: {
+            promptAsync: (opts: { path: { id: string }; body: { parts: Array<{ type: string; text: string }> } }) => Promise<unknown>
+          }
+        }
+      }
+
+      const originalPromptAsync = mockInput.client.session.promptAsync
+      let promptAsyncCalls = 0
+      mockInput.client.session.promptAsync = async (opts) => {
+        promptAsyncCalls += 1
+        if (promptAsyncCalls === 1) {
+          firstPromptStartedResolve?.()
+        }
+        await promptAsyncBlocked
+        return originalPromptAsync(opts)
+      }
+
+      const hook = createRalphLoopHook(mockInput as Parameters<typeof createRalphLoopHook>[0])
+      hook.startLoop("session-123", "Build feature", { maxIterations: 10 })
+
+      // when - second idle arrives while first idle processing is still in flight
+      const firstIdle = hook.event({
+        event: { type: "session.idle", properties: { sessionID: "session-123" } },
+      })
+      await firstPromptStarted
+      const secondIdle = hook.event({
+        event: { type: "session.idle", properties: { sessionID: "session-123" } },
+      })
+
+      releasePromptAsync?.()
+      await Promise.all([firstIdle, secondIdle])
+
+      // then - only one continuation should be injected
+      expect(promptAsyncCalls).toBe(1)
+      expect(promptCalls.length).toBe(1)
+      expect(hook.getState()?.iteration).toBe(2)
+    })
+
     test("should clear loop state on user abort (MessageAbortedError)", async () => {
       // given - active loop
       const hook = createRalphLoopHook(createMockPluginInput())
@@ -782,8 +834,8 @@ describe("ralph-loop", () => {
       expect(hook.getState()).toBeNull()
     })
 
-    test("should NOT detect completion if promise is older than last 3 assistant messages", async () => {
-      // given - promise appears in an assistant message older than last 3
+    test("should detect completion even when promise is older than previous narrow window", async () => {
+      // given - promise appears in an older assistant message with additional assistant output after it
       mockSessionMessages = [
         { info: { role: "user" }, parts: [{ type: "text", text: "Start task" }] },
         { info: { role: "assistant" }, parts: [{ type: "text", text: "Promise early <promise>DONE</promise>" }] },
@@ -801,9 +853,40 @@ describe("ralph-loop", () => {
         event: { type: "session.idle", properties: { sessionID: "session-123" } },
       })
 
-      // then - loop should continue (promise is older than last 3 assistant messages)
-      expect(promptCalls.length).toBe(1)
-      expect(hook.getState()?.iteration).toBe(2)
+      // then - loop should complete because all assistant messages are scanned
+      expect(promptCalls.length).toBe(0)
+      expect(toastCalls.some((t) => t.title === "Ralph Loop Complete!")).toBe(true)
+      expect(hook.getState()).toBeNull()
+    })
+
+    test("should detect completion when many assistant messages are emitted after promise", async () => {
+      // given - completion promise followed by long assistant output sequence
+      mockSessionMessages = [
+        { info: { role: "user" }, parts: [{ type: "text", text: "Start task" }] },
+        { info: { role: "assistant" }, parts: [{ type: "text", text: "Done now <promise>DONE</promise>" }] },
+      ]
+
+      for (let index = 1; index <= 25; index += 1) {
+        mockSessionMessages.push({
+          info: { role: "assistant" },
+          parts: [{ type: "text", text: `Post-completion assistant output ${index}` }],
+        })
+      }
+
+      const hook = createRalphLoopHook(createMockPluginInput(), {
+        getTranscriptPath: () => join(TEST_DIR, "nonexistent.jsonl"),
+      })
+      hook.startLoop("session-123", "Build something", { completionPromise: "DONE" })
+
+      // when - session goes idle
+      await hook.event({
+        event: { type: "session.idle", properties: { sessionID: "session-123" } },
+      })
+
+      // then - loop should complete despite large trailing output
+      expect(promptCalls.length).toBe(0)
+      expect(toastCalls.some((t) => t.title === "Ralph Loop Complete!")).toBe(true)
+      expect(hook.getState()).toBeNull()
     })
 
     test("should allow starting new loop while previous loop is active (different session)", async () => {

src/hooks/ralph-loop/iteration-continuation.ts

@@ -33,15 +33,6 @@ export async function continueIteration(
       return
     }
 
-    const boundState = options.loopState.setSessionID(newSessionID)
-    if (!boundState) {
-      log(`[${HOOK_NAME}] Failed to bind loop state to new session`, {
-        previousSessionID: options.previousSessionID,
-        newSessionID,
-      })
-      return
-    }
-
     await injectContinuationPrompt(ctx, {
       sessionID: newSessionID,
       inheritFromSessionID: options.previousSessionID,
@@ -51,6 +42,16 @@ export async function continueIteration(
     })
 
     await selectSessionInTui(ctx.client, newSessionID)
+
+    const boundState = options.loopState.setSessionID(newSessionID)
+    if (!boundState) {
+      log(`[${HOOK_NAME}] Failed to bind loop state to new session`, {
+        previousSessionID: options.previousSessionID,
+        newSessionID,
+      })
+      return
+    }
+
     return
   }
 

src/hooks/ralph-loop/ralph-loop-event-handler.ts

@@ -25,6 +25,8 @@ export function createRalphLoopEventHandler(
 	ctx: PluginInput,
 	options: RalphLoopEventHandlerOptions,
 ) {
+	const inFlightSessions = new Set<string>()
+
 	return async ({ event }: { event: { type: string; properties?: unknown } }): Promise<void> => {
 		const props = event.properties as Record<string, unknown> | undefined
 
@@ -32,115 +34,127 @@ export function createRalphLoopEventHandler(
 			const sessionID = props?.sessionID as string | undefined
 			if (!sessionID) return
 
-			if (options.sessionRecovery.isRecovering(sessionID)) {
-				log(`[${HOOK_NAME}] Skipped: in recovery`, { sessionID })
+			if (inFlightSessions.has(sessionID)) {
+				log(`[${HOOK_NAME}] Skipped: handler in flight`, { sessionID })
 				return
 			}
 
-			const state = options.loopState.getState()
-			if (!state || !state.active) {
-				return
-			}
-
-			if (state.session_id && state.session_id !== sessionID) {
-				if (options.checkSessionExists) {
-					try {
-						const exists = await options.checkSessionExists(state.session_id)
-						if (!exists) {
-							options.loopState.clear()
-							log(`[${HOOK_NAME}] Cleared orphaned state from deleted session`, {
-								orphanedSessionId: state.session_id,
-								currentSessionId: sessionID,
-							})
-							return
-						}
-					} catch (err) {
-						log(`[${HOOK_NAME}] Failed to check session existence`, {
-							sessionId: state.session_id,
-							error: String(err),
-						})
-					}
-				}
-				return
-			}
-
-			const transcriptPath = options.getTranscriptPath(sessionID)
-			const completionViaTranscript = detectCompletionInTranscript(transcriptPath, state.completion_promise)
-			const completionViaApi = completionViaTranscript
-				? false
-				: await detectCompletionInSessionMessages(ctx, {
-					sessionID,
-					promise: state.completion_promise,
-					apiTimeoutMs: options.apiTimeoutMs,
-					directory: options.directory,
-				})
-
-			if (completionViaTranscript || completionViaApi) {
-				log(`[${HOOK_NAME}] Completion detected!`, {
-					sessionID,
-					iteration: state.iteration,
-					promise: state.completion_promise,
-					detectedVia: completionViaTranscript
-						? "transcript_file"
-						: "session_messages_api",
-				})
-				options.loopState.clear()
-
-				const title = state.ultrawork ? "ULTRAWORK LOOP COMPLETE!" : "Ralph Loop Complete!"
-				const message = state.ultrawork ? `JUST ULW ULW! Task completed after ${state.iteration} iteration(s)` : `Task completed after ${state.iteration} iteration(s)`
-				await ctx.client.tui?.showToast?.({ body: { title, message, variant: "success", duration: 5000 } }).catch(() => {})
-				return
-			}
-
-			if (state.iteration >= state.max_iterations) {
-				log(`[${HOOK_NAME}] Max iterations reached`, {
-					sessionID,
-					iteration: state.iteration,
-					max: state.max_iterations,
-				})
-				options.loopState.clear()
-
-				await ctx.client.tui?.showToast?.({
-					body: { title: "Ralph Loop Stopped", message: `Max iterations (${state.max_iterations}) reached without completion`, variant: "warning", duration: 5000 },
-					}).catch(() => {})
-				return
-			}
-
-			const newState = options.loopState.incrementIteration()
-			if (!newState) {
-				log(`[${HOOK_NAME}] Failed to increment iteration`, { sessionID })
-				return
-			}
-
-			log(`[${HOOK_NAME}] Continuing loop`, {
-				sessionID,
-				iteration: newState.iteration,
-				max: newState.max_iterations,
-			})
-
-			await ctx.client.tui?.showToast?.({
-				body: {
-					title: "Ralph Loop",
-					message: `Iteration ${newState.iteration}/${newState.max_iterations}`,
-					variant: "info",
-					duration: 2000,
-				},
-				}).catch(() => {})
+			inFlightSessions.add(sessionID)
 
 			try {
-				await continueIteration(ctx, newState, {
-					previousSessionID: sessionID,
-					directory: options.directory,
-					apiTimeoutMs: options.apiTimeoutMs,
-					loopState: options.loopState,
-				})
-			} catch (err) {
-				log(`[${HOOK_NAME}] Failed to inject continuation`, {
+
+				if (options.sessionRecovery.isRecovering(sessionID)) {
+					log(`[${HOOK_NAME}] Skipped: in recovery`, { sessionID })
+					return
+				}
+
+				const state = options.loopState.getState()
+				if (!state || !state.active) {
+					return
+				}
+
+				if (state.session_id && state.session_id !== sessionID) {
+					if (options.checkSessionExists) {
+						try {
+							const exists = await options.checkSessionExists(state.session_id)
+							if (!exists) {
+								options.loopState.clear()
+								log(`[${HOOK_NAME}] Cleared orphaned state from deleted session`, {
+									orphanedSessionId: state.session_id,
+									currentSessionId: sessionID,
+								})
+								return
+							}
+						} catch (err) {
+							log(`[${HOOK_NAME}] Failed to check session existence`, {
+								sessionId: state.session_id,
+								error: String(err),
+							})
+						}
+					}
+					return
+				}
+
+				const transcriptPath = options.getTranscriptPath(sessionID)
+				const completionViaTranscript = detectCompletionInTranscript(transcriptPath, state.completion_promise)
+				const completionViaApi = completionViaTranscript
+					? false
+					: await detectCompletionInSessionMessages(ctx, {
+						sessionID,
+						promise: state.completion_promise,
+						apiTimeoutMs: options.apiTimeoutMs,
+						directory: options.directory,
+					})
+
+				if (completionViaTranscript || completionViaApi) {
+					log(`[${HOOK_NAME}] Completion detected!`, {
+						sessionID,
+						iteration: state.iteration,
+						promise: state.completion_promise,
+						detectedVia: completionViaTranscript
+							? "transcript_file"
+							: "session_messages_api",
+					})
+					options.loopState.clear()
+
+					const title = state.ultrawork ? "ULTRAWORK LOOP COMPLETE!" : "Ralph Loop Complete!"
+					const message = state.ultrawork ? `JUST ULW ULW! Task completed after ${state.iteration} iteration(s)` : `Task completed after ${state.iteration} iteration(s)`
+					await ctx.client.tui?.showToast?.({ body: { title, message, variant: "success", duration: 5000 } }).catch(() => {})
+					return
+				}
+
+				if (state.iteration >= state.max_iterations) {
+					log(`[${HOOK_NAME}] Max iterations reached`, {
+						sessionID,
+						iteration: state.iteration,
+						max: state.max_iterations,
+					})
+					options.loopState.clear()
+
+					await ctx.client.tui?.showToast?.({
+						body: { title: "Ralph Loop Stopped", message: `Max iterations (${state.max_iterations}) reached without completion`, variant: "warning", duration: 5000 },
+						}).catch(() => {})
+					return
+				}
+
+				const newState = options.loopState.incrementIteration()
+				if (!newState) {
+					log(`[${HOOK_NAME}] Failed to increment iteration`, { sessionID })
+					return
+				}
+
+				log(`[${HOOK_NAME}] Continuing loop`, {
 					sessionID,
-					error: String(err),
+					iteration: newState.iteration,
+					max: newState.max_iterations,
 				})
+
+				await ctx.client.tui?.showToast?.({
+					body: {
+						title: "Ralph Loop",
+						message: `Iteration ${newState.iteration}/${newState.max_iterations}`,
+						variant: "info",
+						duration: 2000,
+					},
+					}).catch(() => {})
+
+				try {
+					await continueIteration(ctx, newState, {
+						previousSessionID: sessionID,
+						directory: options.directory,
+						apiTimeoutMs: options.apiTimeoutMs,
+						loopState: options.loopState,
+					})
+				} catch (err) {
+					log(`[${HOOK_NAME}] Failed to inject continuation`, {
+						sessionID,
+						error: String(err),
+					})
+				}
+				return
+			} finally {
+				inFlightSessions.delete(sessionID)
 			}
-			return
 		}
 
 		if (event.type === "session.deleted") {

src/hooks/ralph-loop/reset-strategy-race-condition.test.ts

@@ -0,0 +1,111 @@
+/// <reference types="bun-types" />
+import { describe, expect, test } from "bun:test"
+import { createRalphLoopHook } from "./index"
+
+function createDeferred(): {
+  promise: Promise<void>
+  resolve: () => void
+} {
+  let resolvePromise: (() => void) | null = null
+  const promise = new Promise<void>((resolve) => {
+    resolvePromise = resolve
+  })
+
+  return {
+    promise,
+    resolve: () => {
+      if (resolvePromise) {
+        resolvePromise()
+      }
+    },
+  }
+}
+
+async function waitUntil(condition: () => boolean): Promise<void> {
+  for (let index = 0; index < 100; index++) {
+    if (condition()) {
+      return
+    }
+
+    await new Promise<void>((resolve) => {
+      setTimeout(resolve, 0)
+    })
+  }
+
+  throw new Error("Condition was not met in time")
+}
+
+describe("ralph-loop reset strategy race condition", () => {
+  test("should skip duplicate idle while reset iteration handling is in flight", async () => {
+    // given - reset strategy loop with blocked TUI session switch
+    const promptCalls: Array<{ sessionID: string; text: string }> = []
+    const createSessionCalls: Array<{ parentID?: string }> = []
+    let selectSessionCalls = 0
+    const selectSessionDeferred = createDeferred()
+
+    const hook = createRalphLoopHook({
+      directory: process.cwd(),
+      client: {
+        session: {
+          prompt: async (options: {
+            path: { id: string }
+            body: { parts: Array<{ type: string; text: string }> }
+          }) => {
+            promptCalls.push({
+              sessionID: options.path.id,
+              text: options.body.parts[0].text,
+            })
+            return {}
+          },
+          promptAsync: async (options: {
+            path: { id: string }
+            body: { parts: Array<{ type: string; text: string }> }
+          }) => {
+            promptCalls.push({
+              sessionID: options.path.id,
+              text: options.body.parts[0].text,
+            })
+            return {}
+          },
+          create: async (options: {
+            body: { parentID?: string; title?: string }
+            query?: { directory?: string }
+          }) => {
+            createSessionCalls.push({ parentID: options.body.parentID })
+            return { data: { id: `new-session-${createSessionCalls.length}` } }
+          },
+          messages: async () => ({ data: [] }),
+        },
+        tui: {
+          showToast: async () => ({}),
+          selectSession: async () => {
+            selectSessionCalls += 1
+            await selectSessionDeferred.promise
+            return {}
+          },
+        },
+      },
+    } as unknown as Parameters<typeof createRalphLoopHook>[0])
+
+    hook.startLoop("session-old", "Build feature", { strategy: "reset" })
+
+    // when - first idle is in-flight and old session fires idle again before TUI switch resolves
+    const firstIdleEvent = hook.event({
+      event: { type: "session.idle", properties: { sessionID: "session-old" } },
+    })
+
+    await waitUntil(() => selectSessionCalls > 0)
+
+    const secondIdleEvent = hook.event({
+      event: { type: "session.idle", properties: { sessionID: "session-old" } },
+    })
+
+    selectSessionDeferred.resolve()
+    await Promise.all([firstIdleEvent, secondIdleEvent])
+
+    // then - duplicate idle should be skipped to prevent concurrent continuation injection
+    expect(createSessionCalls.length).toBe(1)
+    expect(promptCalls.length).toBe(1)
+    expect(hook.getState()?.iteration).toBe(2)
+  })
+})

src/hooks/runtime-fallback/index.test.ts

@@ -125,7 +125,7 @@ describe("runtime-fallback", () => {
       await hook.event({
         event: {
           type: "session.created",
-          properties: { info: { id: sessionID, model: "google/gemini-3-pro" } },
+          properties: { info: { id: sessionID, model: "google/gemini-3.1-pro" } },
         },
       })
 
@@ -1841,7 +1841,7 @@ describe("runtime-fallback", () => {
     test("should apply fallback model on next chat.message after error", async () => {
       const hook = createRuntimeFallbackHook(createMockPluginInput(), {
         config: createMockConfig({ notify_on_fallback: false }),
-        pluginConfig: createMockPluginConfigWithCategoryFallback(["openai/gpt-5.2", "google/gemini-3-pro"]),
+        pluginConfig: createMockPluginConfigWithCategoryFallback(["openai/gpt-5.2", "google/gemini-3.1-pro"]),
       })
       const sessionID = "test-session-switch"
       SessionCategoryRegistry.register(sessionID, "test")
@@ -1916,7 +1916,7 @@ describe("runtime-fallback", () => {
       const input = createMockPluginInput()
       const hook = createRuntimeFallbackHook(input, {
         config: createMockConfig({ notify_on_fallback: false }),
-        pluginConfig: createMockPluginConfigWithAgentFallback("oracle", ["openai/gpt-5.2", "google/gemini-3-pro"]),
+        pluginConfig: createMockPluginConfigWithAgentFallback("oracle", ["openai/gpt-5.2", "google/gemini-3.1-pro"]),
       })
       const sessionID = "test-agent-fallback"
 

src/hooks/session-notification-input-needed.test.ts

@@ -3,6 +3,7 @@ const { describe, expect, test, beforeEach, afterEach, spyOn } = require("bun:te
 const { createSessionNotification } = require("./session-notification")
 const { setMainSession, subagentSessions, _resetForTesting } = require("../features/claude-code-session-state")
 const utils = require("./session-notification-utils")
+const sender = require("./session-notification-sender")
 
 describe("session-notification input-needed events", () => {
   let notificationCalls: string[]
@@ -37,6 +38,10 @@ describe("session-notification input-needed events", () => {
     spyOn(utils, "getNotifySendPath").mockResolvedValue("/usr/bin/notify-send")
     spyOn(utils, "getPowershellPath").mockResolvedValue("powershell")
     spyOn(utils, "startBackgroundCheck").mockImplementation(() => {})
+    spyOn(sender, "detectPlatform").mockReturnValue("darwin")
+    spyOn(sender, "sendSessionNotification").mockImplementation(async (_ctx: unknown, _platform: unknown, _title: unknown, message: string) => {
+      notificationCalls.push(message)
+    })
   })
 
   afterEach(() => {
@@ -47,7 +52,7 @@ describe("session-notification input-needed events", () => {
   test("sends question notification when question tool asks for input", async () => {
     const sessionID = "main-question"
     setMainSession(sessionID)
-    const hook = createSessionNotification(createMockPluginInput())
+    const hook = createSessionNotification(createMockPluginInput(), { enforceMainSessionFilter: false })
 
     await hook({
       event: {
@@ -74,7 +79,7 @@ describe("session-notification input-needed events", () => {
   test("sends permission notification for permission events", async () => {
     const sessionID = "main-permission"
     setMainSession(sessionID)
-    const hook = createSessionNotification(createMockPluginInput())
+    const hook = createSessionNotification(createMockPluginInput(), { enforceMainSessionFilter: false })
 
     await hook({
       event: {

src/hooks/session-notification.test.ts

@@ -1,8 +1,9 @@
-import { describe, expect, test, beforeEach, afterEach, spyOn } from "bun:test"
+const { describe, expect, test, beforeEach, afterEach, spyOn } = require("bun:test")
 
 import { createSessionNotification } from "./session-notification"
 import { setMainSession, subagentSessions, _resetForTesting } from "../features/claude-code-session-state"
 import * as utils from "./session-notification-utils"
+import * as sender from "./session-notification-sender"
 
 describe("session-notification", () => {
   let notificationCalls: string[]
@@ -40,6 +41,10 @@ describe("session-notification", () => {
     spyOn(utils, "getPaplayPath").mockResolvedValue("/usr/bin/paplay")
     spyOn(utils, "getAplayPath").mockResolvedValue("/usr/bin/aplay")
     spyOn(utils, "startBackgroundCheck").mockImplementation(() => {})
+    spyOn(sender, "detectPlatform").mockReturnValue("darwin")
+    spyOn(sender, "sendSessionNotification").mockImplementation(async (_ctx, _platform, _title, message) => {
+      notificationCalls.push(message)
+    })
   })
 
   afterEach(() => {
@@ -105,6 +110,7 @@ describe("session-notification", () => {
     const hook = createSessionNotification(createMockPluginInput(), {
       idleConfirmationDelay: 10,
       skipIfIncompleteTodos: false,
+      enforceMainSessionFilter: false,
     })
 
     // when - main session goes idle
@@ -332,6 +338,7 @@ describe("session-notification", () => {
     const hook = createSessionNotification(createMockPluginInput(), {
       idleConfirmationDelay: 10,
       skipIfIncompleteTodos: false,
+      enforceMainSessionFilter: false,
     })
 
     // when - session goes idle twice

src/hooks/session-notification.ts

@@ -4,11 +4,9 @@ import {
   startBackgroundCheck,
 } from "./session-notification-utils"
 import {
-  detectPlatform,
-  getDefaultSoundPath,
-  playSessionNotificationSound,
-  sendSessionNotification,
+  type Platform,
 } from "./session-notification-sender"
+import * as sessionNotificationSender from "./session-notification-sender"
 import { hasIncompleteTodos } from "./session-todo-status"
 import { createIdleNotificationScheduler } from "./session-notification-scheduler"
 
@@ -25,13 +23,14 @@ interface SessionNotificationConfig {
   skipIfIncompleteTodos?: boolean
   /** Maximum number of sessions to track before cleanup (default: 100) */
   maxTrackedSessions?: number
+  enforceMainSessionFilter?: boolean
 }
 export function createSessionNotification(
   ctx: PluginInput,
   config: SessionNotificationConfig = {}
 ) {
-  const currentPlatform = detectPlatform()
-  const defaultSoundPath = getDefaultSoundPath(currentPlatform)
+  const currentPlatform: Platform = sessionNotificationSender.detectPlatform()
+  const defaultSoundPath = sessionNotificationSender.getDefaultSoundPath(currentPlatform)
 
   startBackgroundCheck(currentPlatform)
 
@@ -45,6 +44,7 @@ export function createSessionNotification(
     idleConfirmationDelay: 1500,
     skipIfIncompleteTodos: true,
     maxTrackedSessions: 100,
+    enforceMainSessionFilter: true,
     ...config,
   }
 
@@ -53,8 +53,8 @@ export function createSessionNotification(
     platform: currentPlatform,
     config: mergedConfig,
     hasIncompleteTodos,
-    send: sendSessionNotification,
-    playSound: playSessionNotificationSound,
+    send: sessionNotificationSender.sendSessionNotification,
+    playSound: sessionNotificationSender.playSessionNotificationSound,
   })
 
   const QUESTION_TOOLS = new Set(["question", "ask_user_question", "askuserquestion"])
@@ -81,8 +81,10 @@ export function createSessionNotification(
   const shouldNotifyForSession = (sessionID: string): boolean => {
     if (subagentSessions.has(sessionID)) return false
 
-    const mainSessionID = getMainSessionID()
-    if (mainSessionID && sessionID !== mainSessionID) return false
+    if (mergedConfig.enforceMainSessionFilter) {
+      const mainSessionID = getMainSessionID()
+      if (mainSessionID && sessionID !== mainSessionID) return false
+    }
 
     return true
   }
@@ -146,9 +148,14 @@ export function createSessionNotification(
       if (!shouldNotifyForSession(sessionID)) return
 
       scheduler.markSessionActivity(sessionID)
-      await sendSessionNotification(ctx, currentPlatform, mergedConfig.title, mergedConfig.permissionMessage)
+      await sessionNotificationSender.sendSessionNotification(
+        ctx,
+        currentPlatform,
+        mergedConfig.title,
+        mergedConfig.permissionMessage,
+      )
       if (mergedConfig.playSound && mergedConfig.soundPath) {
-        await playSessionNotificationSound(ctx, currentPlatform, mergedConfig.soundPath)
+        await sessionNotificationSender.playSessionNotificationSound(ctx, currentPlatform, mergedConfig.soundPath)
       }
       return
     }
@@ -168,9 +175,9 @@ export function createSessionNotification(
               ? mergedConfig.permissionMessage
               : mergedConfig.questionMessage
 
-            await sendSessionNotification(ctx, currentPlatform, mergedConfig.title, message)
+            await sessionNotificationSender.sendSessionNotification(ctx, currentPlatform, mergedConfig.title, message)
             if (mergedConfig.playSound && mergedConfig.soundPath) {
-              await playSessionNotificationSound(ctx, currentPlatform, mergedConfig.soundPath)
+              await sessionNotificationSender.playSessionNotificationSound(ctx, currentPlatform, mergedConfig.soundPath)
             }
           }
         }

src/hooks/start-work/index.test.ts

@@ -7,9 +7,12 @@ import { createStartWorkHook } from "./index"
 import {
   writeBoulderState,
   clearBoulderState,
+  readBoulderState,
 } from "../../features/boulder-state"
 import type { BoulderState } from "../../features/boulder-state"
 import * as sessionState from "../../features/claude-code-session-state"
+import * as worktreeDetector from "./worktree-detector"
+import * as worktreeDetector from "./worktree-detector"
 
 describe("start-work hook", () => {
   let testDir: string
@@ -402,4 +405,152 @@ describe("start-work hook", () => {
       updateSpy.mockRestore()
     })
   })
+
+  describe("worktree support", () => {
+    let detectSpy: ReturnType<typeof spyOn>
+
+    beforeEach(() => {
+      detectSpy = spyOn(worktreeDetector, "detectWorktreePath").mockReturnValue(null)
+    })
+
+    afterEach(() => {
+      detectSpy.mockRestore()
+    })
+
+    test("should inject model-decides instructions when no --worktree flag", async () => {
+      // given - single plan, no worktree flag
+      const plansDir = join(testDir, ".sisyphus", "plans")
+      mkdirSync(plansDir, { recursive: true })
+      writeFileSync(join(plansDir, "my-plan.md"), "# Plan\n- [ ] Task 1")
+
+      const hook = createStartWorkHook(createMockPluginInput())
+      const output = {
+        parts: [{ type: "text", text: "<session-context></session-context>" }],
+      }
+
+      // when
+      await hook["chat.message"]({ sessionID: "session-123" }, output)
+
+      // then - model-decides instructions should appear
+      expect(output.parts[0].text).toContain("Worktree Setup Required")
+      expect(output.parts[0].text).toContain("git worktree list --porcelain")
+      expect(output.parts[0].text).toContain("git worktree add")
+    })
+
+    test("should inject worktree path when --worktree flag is valid", async () => {
+      // given - single plan + valid worktree path
+      const plansDir = join(testDir, ".sisyphus", "plans")
+      mkdirSync(plansDir, { recursive: true })
+      writeFileSync(join(plansDir, "my-plan.md"), "# Plan\n- [ ] Task 1")
+      detectSpy.mockReturnValue("/validated/worktree")
+
+      const hook = createStartWorkHook(createMockPluginInput())
+      const output = {
+        parts: [{ type: "text", text: "<session-context>\n<user-request>--worktree /validated/worktree</user-request>\n</session-context>" }],
+      }
+
+      // when
+      await hook["chat.message"]({ sessionID: "session-123" }, output)
+
+      // then - validated path shown, no model-decides instructions
+      expect(output.parts[0].text).toContain("**Worktree**: /validated/worktree")
+      expect(output.parts[0].text).not.toContain("Worktree Setup Required")
+    })
+
+    test("should store worktree_path in boulder when --worktree is valid", async () => {
+      // given - plan + valid worktree
+      const plansDir = join(testDir, ".sisyphus", "plans")
+      mkdirSync(plansDir, { recursive: true })
+      writeFileSync(join(plansDir, "my-plan.md"), "# Plan\n- [ ] Task 1")
+      detectSpy.mockReturnValue("/valid/wt")
+
+      const hook = createStartWorkHook(createMockPluginInput())
+      const output = {
+        parts: [{ type: "text", text: "<session-context>\n<user-request>--worktree /valid/wt</user-request>\n</session-context>" }],
+      }
+
+      // when
+      await hook["chat.message"]({ sessionID: "session-123" }, output)
+
+      // then - boulder.json has worktree_path
+      const state = readBoulderState(testDir)
+      expect(state?.worktree_path).toBe("/valid/wt")
+    })
+
+    test("should NOT store worktree_path when --worktree path is invalid", async () => {
+      // given - plan + invalid worktree path (detectWorktreePath returns null)
+      const plansDir = join(testDir, ".sisyphus", "plans")
+      mkdirSync(plansDir, { recursive: true })
+      writeFileSync(join(plansDir, "my-plan.md"), "# Plan\n- [ ] Task 1")
+      // detectSpy already returns null by default
+
+      const hook = createStartWorkHook(createMockPluginInput())
+      const output = {
+        parts: [{ type: "text", text: "<session-context>\n<user-request>--worktree /nonexistent/wt</user-request>\n</session-context>" }],
+      }
+
+      // when
+      await hook["chat.message"]({ sessionID: "session-123" }, output)
+
+      // then - worktree_path absent, setup instructions present
+      const state = readBoulderState(testDir)
+      expect(state?.worktree_path).toBeUndefined()
+      expect(output.parts[0].text).toContain("needs setup")
+      expect(output.parts[0].text).toContain("git worktree add /nonexistent/wt")
+    })
+
+    test("should update boulder worktree_path on resume when new --worktree given", async () => {
+      // given - existing boulder with old worktree, user provides new worktree
+      const planPath = join(testDir, "plan.md")
+      writeFileSync(planPath, "# Plan\n- [ ] Task 1")
+      const existingState: BoulderState = {
+        active_plan: planPath,
+        started_at: "2026-01-01T00:00:00Z",
+        session_ids: ["old-session"],
+        plan_name: "plan",
+        worktree_path: "/old/wt",
+      }
+      writeBoulderState(testDir, existingState)
+      detectSpy.mockReturnValue("/new/wt")
+
+      const hook = createStartWorkHook(createMockPluginInput())
+      const output = {
+        parts: [{ type: "text", text: "<session-context>\n<user-request>--worktree /new/wt</user-request>\n</session-context>" }],
+      }
+
+      // when
+      await hook["chat.message"]({ sessionID: "session-456" }, output)
+
+      // then - boulder reflects updated worktree and new session appended
+      const state = readBoulderState(testDir)
+      expect(state?.worktree_path).toBe("/new/wt")
+      expect(state?.session_ids).toContain("session-456")
+    })
+
+    test("should show existing worktree on resume when no --worktree flag", async () => {
+      // given - existing boulder already has worktree_path, no flag given
+      const planPath = join(testDir, "plan.md")
+      writeFileSync(planPath, "# Plan\n- [ ] Task 1")
+      const existingState: BoulderState = {
+        active_plan: planPath,
+        started_at: "2026-01-01T00:00:00Z",
+        session_ids: ["old-session"],
+        plan_name: "plan",
+        worktree_path: "/existing/wt",
+      }
+      writeBoulderState(testDir, existingState)
+
+      const hook = createStartWorkHook(createMockPluginInput())
+      const output = {
+        parts: [{ type: "text", text: "<session-context></session-context>" }],
+      }
+
+      // when
+      await hook["chat.message"]({ sessionID: "session-789" }, output)
+
+      // then - shows existing worktree, no model-decides instructions
+      expect(output.parts[0].text).toContain("/existing/wt")
+      expect(output.parts[0].text).not.toContain("Worktree Setup Required")
+    })
+  })
 })

src/hooks/start-work/index.ts

@@ -1 +1,4 @@
 export { HOOK_NAME, createStartWorkHook } from "./start-work-hook"
+export { detectWorktreePath } from "./worktree-detector"
+export type { ParsedUserRequest } from "./parse-user-request"
+export { parseUserRequest } from "./parse-user-request"

src/hooks/start-work/parse-user-request.test.ts

@@ -0,0 +1,78 @@
+/// <reference types="bun-types" />
+
+import { describe, expect, test } from "bun:test"
+import { parseUserRequest } from "./parse-user-request"
+
+describe("parseUserRequest", () => {
+  describe("when no user-request tag", () => {
+    test("#given prompt without tag #when parsing #then returns nulls", () => {
+      const result = parseUserRequest("Just a regular message without any tags")
+      expect(result.planName).toBeNull()
+      expect(result.explicitWorktreePath).toBeNull()
+    })
+  })
+
+  describe("when user-request tag is empty", () => {
+    test("#given empty user-request tag #when parsing #then returns nulls", () => {
+      const result = parseUserRequest("<user-request>  </user-request>")
+      expect(result.planName).toBeNull()
+      expect(result.explicitWorktreePath).toBeNull()
+    })
+  })
+
+  describe("when only plan name given", () => {
+    test("#given plan name without worktree flag #when parsing #then returns plan name with null worktree", () => {
+      const result = parseUserRequest("<session-context>\n<user-request>my-plan</user-request>\n</session-context>")
+      expect(result.planName).toBe("my-plan")
+      expect(result.explicitWorktreePath).toBeNull()
+    })
+  })
+
+  describe("when only --worktree flag given", () => {
+    test("#given --worktree with path only #when parsing #then returns worktree path with null plan", () => {
+      const result = parseUserRequest("<user-request>--worktree /home/user/repo-feat</user-request>")
+      expect(result.planName).toBeNull()
+      expect(result.explicitWorktreePath).toBe("/home/user/repo-feat")
+    })
+  })
+
+  describe("when plan name and --worktree are both given", () => {
+    test("#given plan name before --worktree #when parsing #then returns both", () => {
+      const result = parseUserRequest("<user-request>my-plan --worktree /path/to/worktree</user-request>")
+      expect(result.planName).toBe("my-plan")
+      expect(result.explicitWorktreePath).toBe("/path/to/worktree")
+    })
+
+    test("#given --worktree before plan name #when parsing #then returns both", () => {
+      const result = parseUserRequest("<user-request>--worktree /path/to/worktree my-plan</user-request>")
+      expect(result.planName).toBe("my-plan")
+      expect(result.explicitWorktreePath).toBe("/path/to/worktree")
+    })
+  })
+
+  describe("when --worktree flag has no path", () => {
+    test("#given --worktree without path #when parsing #then worktree path is null", () => {
+      const result = parseUserRequest("<user-request>--worktree</user-request>")
+      expect(result.explicitWorktreePath).toBeNull()
+    })
+  })
+
+  describe("when ultrawork keywords are present", () => {
+    test("#given plan name with ultrawork keyword #when parsing #then strips keyword from plan name", () => {
+      const result = parseUserRequest("<user-request>my-plan ultrawork</user-request>")
+      expect(result.planName).toBe("my-plan")
+    })
+
+    test("#given plan name with ulw keyword and worktree #when parsing #then strips ulw, preserves worktree", () => {
+      const result = parseUserRequest("<user-request>my-plan ulw --worktree /path/to/wt</user-request>")
+      expect(result.planName).toBe("my-plan")
+      expect(result.explicitWorktreePath).toBe("/path/to/wt")
+    })
+
+    test("#given only ultrawork keyword with worktree #when parsing #then plan name is null, worktree preserved", () => {
+      const result = parseUserRequest("<user-request>ultrawork --worktree /wt</user-request>")
+      expect(result.planName).toBeNull()
+      expect(result.explicitWorktreePath).toBe("/wt")
+    })
+  })
+})

src/hooks/start-work/parse-user-request.ts

@@ -0,0 +1,29 @@
+const KEYWORD_PATTERN = /\b(ultrawork|ulw)\b/gi
+const WORKTREE_FLAG_PATTERN = /--worktree(?:\s+(\S+))?/
+
+export interface ParsedUserRequest {
+  planName: string | null
+  explicitWorktreePath: string | null
+}
+
+export function parseUserRequest(promptText: string): ParsedUserRequest {
+  const match = promptText.match(/<user-request>\s*([\s\S]*?)\s*<\/user-request>/i)
+  if (!match) return { planName: null, explicitWorktreePath: null }
+
+  let rawArg = match[1].trim()
+  if (!rawArg) return { planName: null, explicitWorktreePath: null }
+
+  const worktreeMatch = rawArg.match(WORKTREE_FLAG_PATTERN)
+  const explicitWorktreePath = worktreeMatch ? (worktreeMatch[1] ?? null) : null
+
+  if (worktreeMatch) {
+    rawArg = rawArg.replace(worktreeMatch[0], "").trim()
+  }
+
+  const cleanedArg = rawArg.replace(KEYWORD_PATTERN, "").trim()
+
+  return {
+    planName: cleanedArg || null,
+    explicitWorktreePath,
+  }
+}

src/hooks/start-work/start-work-hook.ts

@@ -1,3 +1,4 @@
+import { statSync } from "node:fs"
 import type { PluginInput } from "@opencode-ai/plugin"
 import {
   readBoulderState,
@@ -11,11 +12,11 @@ import {
 } from "../../features/boulder-state"
 import { log } from "../../shared/logger"
 import { updateSessionAgent } from "../../features/claude-code-session-state"
+import { detectWorktreePath } from "./worktree-detector"
+import { parseUserRequest } from "./parse-user-request"
 
 export const HOOK_NAME = "start-work" as const
 
-const KEYWORD_PATTERN = /\b(ultrawork|ulw)\b/gi
-
 interface StartWorkHookInput {
   sessionID: string
   messageID?: string
@@ -25,73 +26,76 @@ interface StartWorkHookOutput {
   parts: Array<{ type: string; text?: string }>
 }
 
-function extractUserRequestPlanName(promptText: string): string | null {
-  const userRequestMatch = promptText.match(/<user-request>\s*([\s\S]*?)\s*<\/user-request>/i)
-  if (!userRequestMatch) return null
-  
-  const rawArg = userRequestMatch[1].trim()
-  if (!rawArg) return null
-  
-  const cleanedArg = rawArg.replace(KEYWORD_PATTERN, "").trim()
-  return cleanedArg || null
-}
-
 function findPlanByName(plans: string[], requestedName: string): string | null {
   const lowerName = requestedName.toLowerCase()
-  
-  const exactMatch = plans.find(p => getPlanName(p).toLowerCase() === lowerName)
+  const exactMatch = plans.find((p) => getPlanName(p).toLowerCase() === lowerName)
   if (exactMatch) return exactMatch
-  
-  const partialMatch = plans.find(p => getPlanName(p).toLowerCase().includes(lowerName))
+  const partialMatch = plans.find((p) => getPlanName(p).toLowerCase().includes(lowerName))
   return partialMatch || null
 }
 
+const MODEL_DECIDES_WORKTREE_BLOCK = `
+## Worktree Setup Required
+
+No worktree specified. Before starting work, you MUST choose or create one:
+
+1. \`git worktree list --porcelain\` — list existing worktrees
+2. Create if needed: \`git worktree add <absolute-path> <branch-or-HEAD>\`
+3. Update \`.sisyphus/boulder.json\` — add \`"worktree_path": "<absolute-path>"\`
+4. Work exclusively inside that worktree directory`
+
+function resolveWorktreeContext(
+  explicitWorktreePath: string | null,
+): { worktreePath: string | undefined; block: string } {
+  if (explicitWorktreePath === null) {
+    return { worktreePath: undefined, block: MODEL_DECIDES_WORKTREE_BLOCK }
+  }
+
+  const validatedPath = detectWorktreePath(explicitWorktreePath)
+  if (validatedPath) {
+    return { worktreePath: validatedPath, block: `\n**Worktree**: ${validatedPath}` }
+  }
+
+  return {
+    worktreePath: undefined,
+    block: `\n**Worktree** (needs setup): \`git worktree add ${explicitWorktreePath} <branch>\`, then add \`"worktree_path"\` to boulder.json`,
+  }
+}
+
 export function createStartWorkHook(ctx: PluginInput) {
   return {
-    "chat.message": async (
-      input: StartWorkHookInput,
-      output: StartWorkHookOutput
-    ): Promise<void> => {
+    "chat.message": async (input: StartWorkHookInput, output: StartWorkHookOutput): Promise<void> => {
       const parts = output.parts
-      const promptText = parts
-        ?.filter((p) => p.type === "text" && p.text)
-        .map((p) => p.text)
-        .join("\n")
-        .trim() || ""
+      const promptText =
+        parts
+          ?.filter((p) => p.type === "text" && p.text)
+          .map((p) => p.text)
+          .join("\n")
+          .trim() || ""
 
-      // Only trigger on actual command execution (contains <session-context> tag)
-      // NOT on description text like "Start Sisyphus work session from Prometheus plan"
-      const isStartWorkCommand = promptText.includes("<session-context>")
+      if (!promptText.includes("<session-context>")) return
 
-      if (!isStartWorkCommand) {
-        return
-      }
-
-      log(`[${HOOK_NAME}] Processing start-work command`, {
-        sessionID: input.sessionID,
-      })
-
-      updateSessionAgent(input.sessionID, "atlas") // Always switch: fixes #1298
+      log(`[${HOOK_NAME}] Processing start-work command`, { sessionID: input.sessionID })
+      updateSessionAgent(input.sessionID, "atlas")
 
       const existingState = readBoulderState(ctx.directory)
       const sessionId = input.sessionID
       const timestamp = new Date().toISOString()
 
+      const { planName: explicitPlanName, explicitWorktreePath } = parseUserRequest(promptText)
+      const { worktreePath, block: worktreeBlock } = resolveWorktreeContext(explicitWorktreePath)
+
       let contextInfo = ""
-      
-      const explicitPlanName = extractUserRequestPlanName(promptText)
-      
+
       if (explicitPlanName) {
-        log(`[${HOOK_NAME}] Explicit plan name requested: ${explicitPlanName}`, {
-          sessionID: input.sessionID,
-        })
-        
+        log(`[${HOOK_NAME}] Explicit plan name requested: ${explicitPlanName}`, { sessionID: input.sessionID })
+
         const allPlans = findPrometheusPlans(ctx.directory)
         const matchedPlan = findPlanByName(allPlans, explicitPlanName)
-        
+
         if (matchedPlan) {
           const progress = getPlanProgress(matchedPlan)
-          
+
           if (progress.isComplete) {
             contextInfo = `
 ## Plan Already Complete
@@ -99,12 +103,10 @@ export function createStartWorkHook(ctx: PluginInput) {
 The requested plan "${getPlanName(matchedPlan)}" has been completed.
 All ${progress.total} tasks are done. Create a new plan with: /plan "your task"`
           } else {
-            if (existingState) {
-              clearBoulderState(ctx.directory)
-            }
-            const newState = createBoulderState(matchedPlan, sessionId, "atlas")
+            if (existingState) clearBoulderState(ctx.directory)
+            const newState = createBoulderState(matchedPlan, sessionId, "atlas", worktreePath)
             writeBoulderState(ctx.directory, newState)
-            
+
             contextInfo = `
 ## Auto-Selected Plan
 
@@ -113,17 +115,20 @@ All ${progress.total} tasks are done. Create a new plan with: /plan "your task"`
 **Progress**: ${progress.completed}/${progress.total} tasks
 **Session ID**: ${sessionId}
 **Started**: ${timestamp}
+${worktreeBlock}
 
 boulder.json has been created. Read the plan and begin execution.`
           }
         } else {
-          const incompletePlans = allPlans.filter(p => !getPlanProgress(p).isComplete)
+          const incompletePlans = allPlans.filter((p) => !getPlanProgress(p).isComplete)
           if (incompletePlans.length > 0) {
-            const planList = incompletePlans.map((p, i) => {
-              const prog = getPlanProgress(p)
-              return `${i + 1}. [${getPlanName(p)}] - Progress: ${prog.completed}/${prog.total}`
-            }).join("\n")
-            
+            const planList = incompletePlans
+              .map((p, i) => {
+                const prog = getPlanProgress(p)
+                return `${i + 1}. [${getPlanName(p)}] - Progress: ${prog.completed}/${prog.total}`
+              })
+              .join("\n")
+
             contextInfo = `
 ## Plan Not Found
 
@@ -143,9 +148,25 @@ No incomplete plans available. Create a new plan with: /plan "your task"`
         }
       } else if (existingState) {
         const progress = getPlanProgress(existingState.active_plan)
-        
+
         if (!progress.isComplete) {
-          appendSessionId(ctx.directory, sessionId)
+          const effectiveWorktree = worktreePath ?? existingState.worktree_path
+
+          if (worktreePath !== undefined) {
+            const updatedSessions = existingState.session_ids.includes(sessionId)
+              ? existingState.session_ids
+              : [...existingState.session_ids, sessionId]
+            writeBoulderState(ctx.directory, {
+              ...existingState,
+              worktree_path: worktreePath,
+              session_ids: updatedSessions,
+            })
+          } else {
+            appendSessionId(ctx.directory, sessionId)
+          }
+
+          const worktreeDisplay = effectiveWorktree ? `\n**Worktree**: ${effectiveWorktree}` : worktreeBlock
+
           contextInfo = `
 ## Active Work Session Found
 
@@ -155,6 +176,7 @@ No incomplete plans available. Create a new plan with: /plan "your task"`
 **Progress**: ${progress.completed}/${progress.total} tasks completed
 **Sessions**: ${existingState.session_ids.length + 1} (current session appended)
 **Started**: ${existingState.started_at}
+${worktreeDisplay}
 
 The current session (${sessionId}) has been added to session_ids.
 Read the plan file and continue from the first unchecked task.`
@@ -167,13 +189,15 @@ Looking for new plans...`
         }
       }
 
-      if ((!existingState && !explicitPlanName) || (existingState && !explicitPlanName && getPlanProgress(existingState.active_plan).isComplete)) {
+      if (
+        (!existingState && !explicitPlanName) ||
+        (existingState && !explicitPlanName && getPlanProgress(existingState.active_plan).isComplete)
+      ) {
         const plans = findPrometheusPlans(ctx.directory)
-        const incompletePlans = plans.filter(p => !getPlanProgress(p).isComplete)
-        
+        const incompletePlans = plans.filter((p) => !getPlanProgress(p).isComplete)
+
         if (plans.length === 0) {
           contextInfo += `
-
 ## No Plans Found
 
 No Prometheus plan files found at .sisyphus/plans/
@@ -187,7 +211,7 @@ All ${plans.length} plan(s) are complete. Create a new plan with: /plan "your ta
         } else if (incompletePlans.length === 1) {
           const planPath = incompletePlans[0]
           const progress = getPlanProgress(planPath)
-          const newState = createBoulderState(planPath, sessionId, "atlas")
+          const newState = createBoulderState(planPath, sessionId, "atlas", worktreePath)
           writeBoulderState(ctx.directory, newState)
 
           contextInfo += `
@@ -199,15 +223,17 @@ All ${plans.length} plan(s) are complete. Create a new plan with: /plan "your ta
 **Progress**: ${progress.completed}/${progress.total} tasks
 **Session ID**: ${sessionId}
 **Started**: ${timestamp}
+${worktreeBlock}
 
 boulder.json has been created. Read the plan and begin execution.`
         } else {
-          const planList = incompletePlans.map((p, i) => {
-            const progress = getPlanProgress(p)
-            const stat = require("node:fs").statSync(p)
-            const modified = new Date(stat.mtimeMs).toISOString()
-            return `${i + 1}. [${getPlanName(p)}] - Modified: ${modified} - Progress: ${progress.completed}/${progress.total}`
-          }).join("\n")
+          const planList = incompletePlans
+            .map((p, i) => {
+              const progress = getPlanProgress(p)
+              const modified = new Date(statSync(p).mtimeMs).toISOString()
+              return `${i + 1}. [${getPlanName(p)}] - Modified: ${modified} - Progress: ${progress.completed}/${progress.total}`
+            })
+            .join("\n")
 
           contextInfo += `
 
@@ -220,6 +246,7 @@ Session ID: ${sessionId}
 ${planList}
 
 Ask the user which plan to work on. Present the options above and wait for their response.
+${worktreeBlock}
 </system-reminder>`
         }
       }
@@ -229,13 +256,14 @@ Ask the user which plan to work on. Present the options above and wait for their
         output.parts[idx].text = output.parts[idx].text
           .replace(/\$SESSION_ID/g, sessionId)
           .replace(/\$TIMESTAMP/g, timestamp)
-        
+
         output.parts[idx].text += `\n\n---\n${contextInfo}`
       }
 
       log(`[${HOOK_NAME}] Context injected`, {
         sessionID: input.sessionID,
         hasExistingState: !!existingState,
+        worktreePath,
       })
     },
   }

src/hooks/start-work/worktree-detector.test.ts

@@ -0,0 +1,79 @@
+/// <reference types="bun-types" />
+
+import { describe, expect, test, spyOn, beforeEach, afterEach } from "bun:test"
+import * as childProcess from "node:child_process"
+import { detectWorktreePath } from "./worktree-detector"
+
+describe("detectWorktreePath", () => {
+  let execFileSyncSpy: ReturnType<typeof spyOn>
+
+  beforeEach(() => {
+    execFileSyncSpy = spyOn(childProcess, "execFileSync").mockImplementation(
+      ((_file: string, _args: string[]) => "") as typeof childProcess.execFileSync,
+    )
+  })
+
+  afterEach(() => {
+    execFileSyncSpy.mockRestore()
+  })
+
+  describe("when directory is a valid git worktree", () => {
+    test("#given valid git dir #when detecting #then returns worktree root path", () => {
+      execFileSyncSpy.mockImplementation(
+        ((_file: string, _args: string[]) => "/home/user/my-repo\n") as typeof childProcess.execFileSync,
+      )
+
+      // when
+      const result = detectWorktreePath("/home/user/my-repo/src")
+
+      // then
+      expect(result).toBe("/home/user/my-repo")
+    })
+
+    test("#given git output with trailing newline #when detecting #then trims output", () => {
+      execFileSyncSpy.mockImplementation(
+        ((_file: string, _args: string[]) => "/projects/worktree-a\n\n") as typeof childProcess.execFileSync,
+      )
+
+      const result = detectWorktreePath("/projects/worktree-a")
+
+      expect(result).toBe("/projects/worktree-a")
+    })
+
+    test("#given valid dir #when detecting #then calls git rev-parse with cwd", () => {
+      execFileSyncSpy.mockImplementation(
+        ((_file: string, _args: string[]) => "/repo\n") as typeof childProcess.execFileSync,
+      )
+
+      detectWorktreePath("/repo/some/subdir")
+
+      expect(execFileSyncSpy).toHaveBeenCalledWith(
+        "git",
+        ["rev-parse", "--show-toplevel"],
+        expect.objectContaining({ cwd: "/repo/some/subdir" }),
+      )
+    })
+  })
+
+  describe("when directory is not a git worktree", () => {
+    test("#given non-git directory #when detecting #then returns null", () => {
+      execFileSyncSpy.mockImplementation((_file: string, _args: string[]) => {
+        throw new Error("not a git repository")
+      })
+
+      const result = detectWorktreePath("/tmp/not-a-repo")
+
+      expect(result).toBeNull()
+    })
+
+    test("#given non-existent directory #when detecting #then returns null", () => {
+      execFileSyncSpy.mockImplementation((_file: string, _args: string[]) => {
+        throw new Error("ENOENT: no such file or directory")
+      })
+
+      const result = detectWorktreePath("/nonexistent/path")
+
+      expect(result).toBeNull()
+    })
+  })
+})

src/hooks/start-work/worktree-detector.ts

@@ -0,0 +1,14 @@
+import { execFileSync } from "node:child_process"
+
+export function detectWorktreePath(directory: string): string | null {
+  try {
+    return execFileSync("git", ["rev-parse", "--show-toplevel"], {
+      cwd: directory,
+      encoding: "utf-8",
+      timeout: 5000,
+      stdio: ["pipe", "pipe", "pipe"],
+    }).trim()
+  } catch {
+    return null
+  }
+}

src/hooks/stop-continuation-guard/hook.ts

@@ -1,4 +1,5 @@
 import type { PluginInput } from "@opencode-ai/plugin"
+import type { BackgroundManager } from "../../features/background-agent"
 
 import {
   clearContinuationMarker,
@@ -8,6 +9,11 @@ import { log } from "../../shared/logger"
 
 const HOOK_NAME = "stop-continuation-guard"
 
+type StopContinuationBackgroundManager = Pick<
+  BackgroundManager,
+  "getAllDescendantTasks" | "cancelTask"
+>
+
 export interface StopContinuationGuard {
   event: (input: { event: { type: string; properties?: unknown } }) => Promise<void>
   "chat.message": (input: { sessionID?: string }) => Promise<void>
@@ -17,7 +23,10 @@ export interface StopContinuationGuard {
 }
 
 export function createStopContinuationGuardHook(
-  ctx: PluginInput
+  ctx: PluginInput,
+  options?: {
+    backgroundManager?: StopContinuationBackgroundManager
+  }
 ): StopContinuationGuard {
   const stoppedSessions = new Set<string>()
 
@@ -25,6 +34,38 @@ export function createStopContinuationGuardHook(
     stoppedSessions.add(sessionID)
     setContinuationMarkerSource(ctx.directory, sessionID, "stop", "stopped", "continuation stopped")
     log(`[${HOOK_NAME}] Continuation stopped for session`, { sessionID })
+
+    const backgroundManager = options?.backgroundManager
+    if (!backgroundManager) {
+      return
+    }
+
+    const cancellableTasks = backgroundManager
+      .getAllDescendantTasks(sessionID)
+      .filter((task) => task.status === "running" || task.status === "pending")
+
+    if (cancellableTasks.length === 0) {
+      return
+    }
+
+    void Promise.allSettled(
+      cancellableTasks.map(async (task) => {
+        await backgroundManager.cancelTask(task.id, {
+          source: "stop-continuation",
+          reason: "Continuation stopped via /stop-continuation",
+          abortSession: task.status === "running",
+          skipNotification: true,
+        })
+      })
+    ).then((results) => {
+      const cancelledCount = results.filter((result) => result.status === "fulfilled").length
+      const failedCount = results.length - cancelledCount
+      log(`[${HOOK_NAME}] Cancelled background tasks for stopped session`, {
+        sessionID,
+        cancelledCount,
+        failedCount,
+      })
+    })
   }
 
   const isStopped = (sessionID: string): boolean => {

src/hooks/stop-continuation-guard/index.test.ts

@@ -2,9 +2,15 @@ import { afterEach, describe, expect, test } from "bun:test"
 import { mkdtempSync, rmSync } from "node:fs"
 import { join } from "node:path"
 import { tmpdir } from "node:os"
+import type { BackgroundManager, BackgroundTask } from "../../features/background-agent"
 import { readContinuationMarker } from "../../features/run-continuation-state"
 import { createStopContinuationGuardHook } from "./index"
 
+type CancelCall = {
+  taskId: string
+  options?: Parameters<BackgroundManager["cancelTask"]>[1]
+}
+
 describe("stop-continuation-guard", () => {
   const tempDirs: string[] = []
 
@@ -34,6 +40,33 @@ describe("stop-continuation-guard", () => {
     } as any
   }
 
+  function createBackgroundTask(status: BackgroundTask["status"], id: string): BackgroundTask {
+    return {
+      id,
+      status,
+      description: `${id} description`,
+      parentSessionID: "parent-session",
+      parentMessageID: "parent-message",
+      prompt: "prompt",
+      agent: "sisyphus-junior",
+    }
+  }
+
+  function createMockBackgroundManager(tasks: BackgroundTask[], cancelCalls: CancelCall[]): Pick<BackgroundManager, "getAllDescendantTasks" | "cancelTask"> {
+    return {
+      getAllDescendantTasks: () => tasks,
+      cancelTask: async (taskId: string, options?: Parameters<BackgroundManager["cancelTask"]>[1]) => {
+        cancelCalls.push({ taskId, options })
+        return true
+      },
+    }
+  }
+
+  async function flushMicrotasks(): Promise<void> {
+    await Promise.resolve()
+    await Promise.resolve()
+  }
+
   test("should mark session as stopped", () => {
     // given - a guard hook with no stopped sessions
     const input = createMockPluginInput()
@@ -166,4 +199,31 @@ describe("stop-continuation-guard", () => {
     // then - should not throw and stopped session remains stopped
     expect(guard.isStopped("some-session")).toBe(true)
   })
+
+  test("should cancel only running and pending background tasks on stop", async () => {
+    // given - a background manager with mixed task statuses
+    const cancelCalls: CancelCall[] = []
+    const backgroundManager = createMockBackgroundManager(
+      [
+        createBackgroundTask("running", "task-running"),
+        createBackgroundTask("pending", "task-pending"),
+        createBackgroundTask("completed", "task-completed"),
+      ],
+      cancelCalls,
+    )
+    const guard = createStopContinuationGuardHook(createMockPluginInput(), {
+      backgroundManager,
+    })
+
+    // when - stop continuation is triggered
+    guard.stop("test-session-bg")
+    await flushMicrotasks()
+
+    // then - only running and pending tasks are cancelled
+    expect(cancelCalls).toHaveLength(2)
+    expect(cancelCalls[0]?.taskId).toBe("task-running")
+    expect(cancelCalls[0]?.options?.abortSession).toBe(true)
+    expect(cancelCalls[1]?.taskId).toBe("task-pending")
+    expect(cancelCalls[1]?.options?.abortSession).toBe(false)
+  })
 })

src/hooks/think-mode/hook.ts

@@ -1,6 +1,6 @@
 import { detectThinkKeyword, extractPromptText } from "./detector"
-import { getHighVariant, getThinkingConfig, isAlreadyHighVariant } from "./switcher"
-import type { ThinkModeInput, ThinkModeState } from "./types"
+import { getHighVariant, isAlreadyHighVariant } from "./switcher"
+import type { ThinkModeState } from "./types"
 import { log } from "../../shared"
 
 const thinkModeState = new Map<string, ThinkModeState>()
@@ -10,53 +10,24 @@ export function clearThinkModeState(sessionID: string): void {
 }
 
 export function createThinkModeHook() {
-  function isDisabledThinkingConfig(config: Record<string, unknown>): boolean {
-    const thinkingConfig = config.thinking
-    if (
-      typeof thinkingConfig === "object" &&
-      thinkingConfig !== null &&
-      "type" in thinkingConfig &&
-      (thinkingConfig as { type?: string }).type === "disabled"
-    ) {
-      return true
-    }
-
-    const providerOptions = config.providerOptions
-    if (typeof providerOptions !== "object" || providerOptions === null) {
-      return false
-    }
-
-    return Object.values(providerOptions as Record<string, unknown>).some(
-      (providerConfig) => {
-        if (typeof providerConfig !== "object" || providerConfig === null) {
-          return false
-        }
-
-        const providerConfigMap = providerConfig as Record<string, unknown>
-        const extraBody = providerConfigMap.extra_body
-        if (typeof extraBody !== "object" || extraBody === null) {
-          return false
-        }
-
-        const extraBodyMap = extraBody as Record<string, unknown>
-        const extraThinking = extraBodyMap.thinking
-        return (
-          typeof extraThinking === "object" &&
-          extraThinking !== null &&
-          (extraThinking as { type?: string }).type === "disabled"
-        )
-      }
-    )
-  }
-
   return {
-    "chat.params": async (output: ThinkModeInput, sessionID: string): Promise<void> => {
+    "chat.message": async (
+      input: {
+        sessionID: string
+        model?: { providerID: string; modelID: string }
+      },
+      output: {
+        message: Record<string, unknown>
+        parts: Array<{ type: string; text?: string; [key: string]: unknown }>
+      }
+    ): Promise<void> => {
       const promptText = extractPromptText(output.parts)
+      const sessionID = input.sessionID
 
       const state: ThinkModeState = {
         requested: false,
         modelSwitched: false,
-        thinkingConfigInjected: false,
+        variantSet: false,
       }
 
       if (!detectThinkKeyword(promptText)) {
@@ -66,7 +37,12 @@ export function createThinkModeHook() {
 
       state.requested = true
 
-      const currentModel = output.message.model
+      if (typeof output.message.variant === "string") {
+        thinkModeState.set(sessionID, state)
+        return
+      }
+
+      const currentModel = input.model
       if (!currentModel) {
         thinkModeState.set(sessionID, state)
         return
@@ -81,14 +57,15 @@ export function createThinkModeHook() {
       }
 
       const highVariant = getHighVariant(currentModel.modelID)
-      const thinkingConfig = getThinkingConfig(currentModel.providerID, currentModel.modelID)
 
       if (highVariant) {
         output.message.model = {
           providerID: currentModel.providerID,
           modelID: highVariant,
         }
+        output.message.variant = "high"
         state.modelSwitched = true
+        state.variantSet = true
         log("Think mode: model switched to high variant", {
           sessionID,
           from: currentModel.modelID,
@@ -96,42 +73,6 @@ export function createThinkModeHook() {
         })
       }
 
-      if (thinkingConfig) {
-        const messageData = output.message as Record<string, unknown>
-        const agentThinking = messageData.thinking as { type?: string } | undefined
-        const agentProviderOptions = messageData.providerOptions
-
-        const agentDisabledThinking = agentThinking?.type === "disabled"
-        const agentHasCustomProviderOptions = Boolean(agentProviderOptions)
-
-        if (agentDisabledThinking) {
-          log("Think mode: skipping - agent has thinking disabled", {
-            sessionID,
-            provider: currentModel.providerID,
-          })
-        } else if (agentHasCustomProviderOptions) {
-          log("Think mode: skipping - agent has custom providerOptions", {
-            sessionID,
-            provider: currentModel.providerID,
-          })
-        } else if (
-          !isDisabledThinkingConfig(thinkingConfig as Record<string, unknown>)
-        ) {
-          Object.assign(output.message, thinkingConfig)
-          state.thinkingConfigInjected = true
-          log("Think mode: thinking config injected", {
-            sessionID,
-            provider: currentModel.providerID,
-            config: thinkingConfig,
-          })
-        } else {
-          log("Think mode: skipping disabled thinking config", {
-            sessionID,
-            provider: currentModel.providerID,
-          })
-        }
-      }
-
       thinkModeState.set(sessionID, state)
     },
 

src/hooks/think-mode/index.test.ts

@@ -1,452 +1,155 @@
-import { describe, expect, it, beforeEach } from "bun:test"
-import type { ThinkModeInput } from "./types"
+import { beforeEach, describe, expect, it } from "bun:test"
 
-const { createThinkModeHook, clearThinkModeState } = await import("./index")
+const { clearThinkModeState, createThinkModeHook } = await import("./index")
+
+type ThinkModeHookInput = {
+  sessionID: string
+  model?: { providerID: string; modelID: string }
+}
+
+type ThinkModeHookOutput = {
+  message: Record<string, unknown>
+  parts: Array<{ type: string; text?: string; [key: string]: unknown }>
+}
+
+function createHookInput(args: {
+  sessionID?: string
+  providerID?: string
+  modelID?: string
+}): ThinkModeHookInput {
+  const { sessionID = "test-session-id", providerID, modelID } = args
+
+  if (!providerID || !modelID) {
+    return { sessionID }
+  }
 
-/**
- * Helper to create a mock ThinkModeInput for testing
- */
-function createMockInput(
-  providerID: string,
-  modelID: string,
-  promptText: string
-): ThinkModeInput {
   return {
-    parts: [{ type: "text", text: promptText }],
-    message: {
-      model: {
-        providerID,
-        modelID,
-      },
-    },
+    sessionID,
+    model: { providerID, modelID },
   }
 }
 
-/**
- * Type helper for accessing dynamically injected properties on message
- */
-type MessageWithInjectedProps = Record<string, unknown>
+function createHookOutput(promptText: string, variant?: string): ThinkModeHookOutput {
+  return {
+    message: variant ? { variant } : {},
+    parts: [{ type: "text", text: promptText }],
+  }
+}
 
-describe("createThinkModeHook integration", () => {
+describe("createThinkModeHook", () => {
   const sessionID = "test-session-id"
 
   beforeEach(() => {
     clearThinkModeState(sessionID)
   })
 
-  describe("GitHub Copilot provider integration", () => {
-    describe("Claude models", () => {
-      it("should activate thinking mode for github-copilot Claude with think keyword", async () => {
-        // given a github-copilot Claude model and prompt with "think" keyword
-        const hook = createThinkModeHook()
-        const input = createMockInput(
-          "github-copilot",
-          "claude-opus-4-6",
-          "Please think deeply about this problem"
-        )
-
-        // when the chat.params hook is called
-        await hook["chat.params"](input, sessionID)
-
-        // then should upgrade to high variant and inject thinking config
-        const message = input.message as MessageWithInjectedProps
-        expect(input.message.model?.modelID).toBe("claude-opus-4-6-high")
-        expect(message.thinking).toBeDefined()
-        expect((message.thinking as Record<string, unknown>)?.type).toBe(
-          "enabled"
-        )
-        expect(
-          (message.thinking as Record<string, unknown>)?.budgetTokens
-        ).toBe(64000)
-      })
-
-      it("should handle github-copilot Claude with dots in version", async () => {
-        // given a github-copilot Claude model with dot format (claude-opus-4.6)
-        const hook = createThinkModeHook()
-        const input = createMockInput(
-          "github-copilot",
-          "claude-opus-4.6",
-          "ultrathink mode"
-        )
-
-        // when the chat.params hook is called
-        await hook["chat.params"](input, sessionID)
-
-        // then should upgrade to high variant (hyphen format)
-        const message = input.message as MessageWithInjectedProps
-        expect(input.message.model?.modelID).toBe("claude-opus-4-6-high")
-        expect(message.thinking).toBeDefined()
-      })
-
-      it("should handle github-copilot Claude Sonnet", async () => {
-        // given a github-copilot Claude Sonnet model
-        const hook = createThinkModeHook()
-        const input = createMockInput(
-          "github-copilot",
-          "claude-sonnet-4-6",
-          "think about this"
-        )
-
-        // when the chat.params hook is called
-        await hook["chat.params"](input, sessionID)
-
-        // then should upgrade to high variant
-        const message = input.message as MessageWithInjectedProps
-        expect(input.message.model?.modelID).toBe("claude-sonnet-4-6-high")
-        expect(message.thinking).toBeDefined()
-      })
+  it("sets high variant and switches model when think keyword is present", async () => {
+    // given
+    const hook = createThinkModeHook()
+    const input = createHookInput({
+      sessionID,
+      providerID: "github-copilot",
+      modelID: "claude-opus-4-6",
     })
+    const output = createHookOutput("Please think deeply about this")
 
-    describe("Gemini models", () => {
-      it("should activate thinking mode for github-copilot Gemini Pro", async () => {
-        // given a github-copilot Gemini Pro model
-        const hook = createThinkModeHook()
-        const input = createMockInput(
-          "github-copilot",
-          "gemini-3-pro",
-          "think about this"
-        )
+    // when
+    await hook["chat.message"](input, output)
 
-        // when the chat.params hook is called
-        await hook["chat.params"](input, sessionID)
-
-        // then should upgrade to high variant and inject google thinking config
-        const message = input.message as MessageWithInjectedProps
-        expect(input.message.model?.modelID).toBe("gemini-3-pro-high")
-        expect(message.providerOptions).toBeDefined()
-        const googleOptions = (
-          message.providerOptions as Record<string, unknown>
-        )?.google as Record<string, unknown>
-        expect(googleOptions?.thinkingConfig).toBeDefined()
-      })
-
-      it("should activate thinking mode for github-copilot Gemini Flash", async () => {
-        // given a github-copilot Gemini Flash model
-        const hook = createThinkModeHook()
-        const input = createMockInput(
-          "github-copilot",
-          "gemini-3-flash",
-          "ultrathink"
-        )
-
-        // when the chat.params hook is called
-        await hook["chat.params"](input, sessionID)
-
-        // then should upgrade to high variant
-        const message = input.message as MessageWithInjectedProps
-        expect(input.message.model?.modelID).toBe("gemini-3-flash-high")
-        expect(message.providerOptions).toBeDefined()
-      })
-    })
-
-    describe("GPT models", () => {
-      it("should activate thinking mode for github-copilot GPT-5.2", async () => {
-        // given a github-copilot GPT-5.2 model
-        const hook = createThinkModeHook()
-        const input = createMockInput(
-          "github-copilot",
-          "gpt-5.2",
-          "please think"
-        )
-
-        // when the chat.params hook is called
-        await hook["chat.params"](input, sessionID)
-
-        // then should upgrade to high variant and inject openai thinking config
-        const message = input.message as MessageWithInjectedProps
-        expect(input.message.model?.modelID).toBe("gpt-5-2-high")
-        expect(message.reasoning_effort).toBe("high")
-      })
-
-      it("should activate thinking mode for github-copilot GPT-5", async () => {
-        // given a github-copilot GPT-5 model
-        const hook = createThinkModeHook()
-        const input = createMockInput("github-copilot", "gpt-5", "think deeply")
-
-        // when the chat.params hook is called
-        await hook["chat.params"](input, sessionID)
-
-        // then should upgrade to high variant
-        const message = input.message as MessageWithInjectedProps
-        expect(input.message.model?.modelID).toBe("gpt-5-high")
-        expect(message.reasoning_effort).toBe("high")
-      })
-    })
-
-    describe("No think keyword", () => {
-      it("should NOT activate for github-copilot without think keyword", async () => {
-        // given a prompt without any think keyword
-        const hook = createThinkModeHook()
-        const input = createMockInput(
-          "github-copilot",
-          "claude-opus-4-6",
-          "Just do this task"
-        )
-        const originalModelID = input.message.model?.modelID
-
-        // when the chat.params hook is called
-        await hook["chat.params"](input, sessionID)
-
-        // then should NOT change model or inject config
-        const message = input.message as MessageWithInjectedProps
-        expect(input.message.model?.modelID).toBe(originalModelID)
-        expect(message.thinking).toBeUndefined()
-      })
+    // then
+    expect(output.message.variant).toBe("high")
+    expect(output.message.model).toEqual({
+      providerID: "github-copilot",
+      modelID: "claude-opus-4-6-high",
     })
   })
 
-  describe("Backwards compatibility with direct providers", () => {
-    it("should still work for direct anthropic provider", async () => {
-      // given direct anthropic provider
-      const hook = createThinkModeHook()
-      const input = createMockInput(
-        "anthropic",
-        "claude-sonnet-4-6",
-        "think about this"
-      )
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should work as before
-      const message = input.message as MessageWithInjectedProps
-      expect(input.message.model?.modelID).toBe("claude-sonnet-4-6-high")
-      expect(message.thinking).toBeDefined()
+  it("supports dotted model IDs by switching to normalized high variant", async () => {
+    // given
+    const hook = createThinkModeHook()
+    const input = createHookInput({
+      sessionID,
+      providerID: "github-copilot",
+      modelID: "gpt-5.2",
     })
+    const output = createHookOutput("ultrathink about this")
 
-    it("should work for direct google-vertex-anthropic provider", async () => {
-      //#given direct google-vertex-anthropic provider
-      const hook = createThinkModeHook()
-      const input = createMockInput(
-        "google-vertex-anthropic",
-        "claude-opus-4-6",
-        "think deeply"
-      )
+    // when
+    await hook["chat.message"](input, output)
 
-      //#when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      //#then should upgrade model and inject Claude thinking config
-      const message = input.message as MessageWithInjectedProps
-      expect(input.message.model?.modelID).toBe("claude-opus-4-6-high")
-      expect(message.thinking).toBeDefined()
-      expect((message.thinking as Record<string, unknown>)?.budgetTokens).toBe(
-        64000
-      )
-    })
-
-    it("should still work for direct google provider", async () => {
-      // given direct google provider
-      const hook = createThinkModeHook()
-      const input = createMockInput(
-        "google",
-        "gemini-3-pro",
-        "think about this"
-      )
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should work as before
-      const message = input.message as MessageWithInjectedProps
-      expect(input.message.model?.modelID).toBe("gemini-3-pro-high")
-      expect(message.providerOptions).toBeDefined()
-    })
-
-    it("should still work for direct openai provider", async () => {
-      // given direct openai provider
-      const hook = createThinkModeHook()
-      const input = createMockInput("openai", "gpt-5", "think about this")
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should work
-      const message = input.message as MessageWithInjectedProps
-      expect(input.message.model?.modelID).toBe("gpt-5-high")
-      expect(message.reasoning_effort).toBe("high")
-    })
-
-    it("should still work for amazon-bedrock provider", async () => {
-      // given amazon-bedrock provider
-      const hook = createThinkModeHook()
-      const input = createMockInput(
-        "amazon-bedrock",
-        "claude-sonnet-4-6",
-        "think"
-      )
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should inject bedrock thinking config
-      const message = input.message as MessageWithInjectedProps
-      expect(input.message.model?.modelID).toBe("claude-sonnet-4-6-high")
-      expect(message.reasoningConfig).toBeDefined()
+    // then
+    expect(output.message.variant).toBe("high")
+    expect(output.message.model).toEqual({
+      providerID: "github-copilot",
+      modelID: "gpt-5-2-high",
     })
   })
 
-  describe("Already-high variants", () => {
-    it("should NOT re-upgrade already-high variants", async () => {
-      // given an already-high variant model
-      const hook = createThinkModeHook()
-      const input = createMockInput(
-        "github-copilot",
-        "claude-opus-4-6-high",
-        "think deeply"
-      )
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should NOT modify the model (already high)
-      const message = input.message as MessageWithInjectedProps
-      expect(input.message.model?.modelID).toBe("claude-opus-4-6-high")
-      // No additional thinking config should be injected
-      expect(message.thinking).toBeUndefined()
+  it("skips when message variant is already set", async () => {
+    // given
+    const hook = createThinkModeHook()
+    const input = createHookInput({
+      sessionID,
+      providerID: "github-copilot",
+      modelID: "claude-sonnet-4-6",
     })
+    const output = createHookOutput("think through this", "max")
 
-    it("should NOT re-upgrade already-high GPT variants", async () => {
-      // given an already-high GPT variant
-      const hook = createThinkModeHook()
-      const input = createMockInput(
-        "github-copilot",
-        "gpt-5.2-high",
-        "ultrathink"
-      )
+    // when
+    await hook["chat.message"](input, output)
 
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should NOT modify the model
-      const message = input.message as MessageWithInjectedProps
-      expect(input.message.model?.modelID).toBe("gpt-5.2-high")
-      expect(message.reasoning_effort).toBeUndefined()
-    })
+    // then
+    expect(output.message.variant).toBe("max")
+    expect(output.message.model).toBeUndefined()
   })
 
-  describe("Unknown models", () => {
-    it("should not crash for unknown models via github-copilot", async () => {
-      // given an unknown model type
-      const hook = createThinkModeHook()
-      const input = createMockInput(
-        "github-copilot",
-        "llama-3-70b",
-        "think about this"
-      )
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should not crash and model should remain unchanged
-      expect(input.message.model?.modelID).toBe("llama-3-70b")
+  it("does nothing when think keyword is absent", async () => {
+    // given
+    const hook = createThinkModeHook()
+    const input = createHookInput({
+      sessionID,
+      providerID: "google",
+      modelID: "gemini-3.1-pro",
     })
+    const output = createHookOutput("Please solve this directly")
+
+    // when
+    await hook["chat.message"](input, output)
+
+    // then
+    expect(output.message.variant).toBeUndefined()
+    expect(output.message.model).toBeUndefined()
   })
 
-  describe("Edge cases", () => {
-    it("should handle missing model gracefully", async () => {
-      // given input without a model
-      const hook = createThinkModeHook()
-      const input: ThinkModeInput = {
-        parts: [{ type: "text", text: "think about this" }],
-        message: {},
-      }
-
-      // when the chat.params hook is called
-      // then should not crash
-      await expect(
-        hook["chat.params"](input, sessionID)
-      ).resolves.toBeUndefined()
+  it("does not modify already-high models", async () => {
+    // given
+    const hook = createThinkModeHook()
+    const input = createHookInput({
+      sessionID,
+      providerID: "openai",
+      modelID: "gpt-5-high",
     })
+    const output = createHookOutput("think deeply")
 
-    it("should handle empty prompt gracefully", async () => {
-      // given empty prompt
-      const hook = createThinkModeHook()
-      const input = createMockInput("github-copilot", "claude-opus-4-6", "")
+    // when
+    await hook["chat.message"](input, output)
 
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should not upgrade (no think keyword)
-      expect(input.message.model?.modelID).toBe("claude-opus-4-6")
-    })
+    // then
+    expect(output.message.variant).toBeUndefined()
+    expect(output.message.model).toBeUndefined()
   })
 
-  describe("Agent-level thinking configuration respect", () => {
-    it("should omit Z.ai GLM disabled thinking config", async () => {
-      //#given a Z.ai GLM model with think prompt
-      const hook = createThinkModeHook()
-      const input = createMockInput(
-        "zai-coding-plan",
-        "glm-5",
-        "ultrathink mode"
-      )
+  it("handles missing input model without crashing", async () => {
+    // given
+    const hook = createThinkModeHook()
+    const input = createHookInput({ sessionID })
+    const output = createHookOutput("think about this")
 
-      //#when think mode resolves Z.ai thinking configuration
-      await hook["chat.params"](input, sessionID)
+    // when
+    await expect(hook["chat.message"](input, output)).resolves.toBeUndefined()
 
-      //#then thinking config should be omitted from request
-      const message = input.message as MessageWithInjectedProps
-      expect(input.message.model?.modelID).toBe("glm-5")
-      expect(message.thinking).toBeUndefined()
-      expect(message.providerOptions).toBeUndefined()
-    })
-
-    it("should NOT inject thinking config when agent has thinking disabled", async () => {
-      // given agent with thinking explicitly disabled
-      const hook = createThinkModeHook()
-      const input: ThinkModeInput = {
-        parts: [{ type: "text", text: "ultrathink deeply" }],
-        message: {
-          model: { providerID: "google", modelID: "gemini-3-pro" },
-          thinking: { type: "disabled" },
-        } as ThinkModeInput["message"],
-      }
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should NOT override agent's thinking disabled setting
-      const message = input.message as MessageWithInjectedProps
-      expect((message.thinking as { type: string }).type).toBe("disabled")
-      expect(message.providerOptions).toBeUndefined()
-    })
-
-    it("should NOT inject thinking config when agent has custom providerOptions", async () => {
-      // given agent with custom providerOptions
-      const hook = createThinkModeHook()
-      const input: ThinkModeInput = {
-        parts: [{ type: "text", text: "ultrathink" }],
-        message: {
-          model: { providerID: "google", modelID: "gemini-3-flash" },
-          providerOptions: {
-            google: { thinkingConfig: { thinkingBudget: 0 } },
-          },
-        } as ThinkModeInput["message"],
-      }
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should NOT override agent's providerOptions
-      const message = input.message as MessageWithInjectedProps
-      const providerOpts = message.providerOptions as Record<string, unknown>
-      expect((providerOpts.google as Record<string, unknown>).thinkingConfig).toEqual({
-        thinkingBudget: 0,
-      })
-    })
-
-    it("should still inject thinking config when agent has no thinking override", async () => {
-      // given agent without thinking override
-      const hook = createThinkModeHook()
-      const input = createMockInput("google", "gemini-3-pro", "ultrathink")
-
-      // when the chat.params hook is called
-      await hook["chat.params"](input, sessionID)
-
-      // then should inject thinking config as normal
-      const message = input.message as MessageWithInjectedProps
-      expect(message.providerOptions).toBeDefined()
-    })
+    // then
+    expect(output.message.variant).toBeUndefined()
+    expect(output.message.model).toBeUndefined()
   })
 })

src/hooks/think-mode/switcher.test.ts

@@ -1,128 +1,10 @@
 import { describe, expect, it } from "bun:test"
 import {
   getHighVariant,
-  getThinkingConfig,
   isAlreadyHighVariant,
-  THINKING_CONFIGS,
 } from "./switcher"
 
 describe("think-mode switcher", () => {
-  describe("GitHub Copilot provider support", () => {
-    describe("Claude models via github-copilot", () => {
-      it("should resolve github-copilot Claude Opus to anthropic config", () => {
-        // given a github-copilot provider with Claude Opus model
-        const providerID = "github-copilot"
-        const modelID = "claude-opus-4-6"
-
-        // when getting thinking config
-        const config = getThinkingConfig(providerID, modelID)
-
-        // then should return anthropic thinking config
-        expect(config).not.toBeNull()
-        expect(config?.thinking).toBeDefined()
-        expect((config?.thinking as Record<string, unknown>)?.type).toBe(
-          "enabled"
-        )
-        expect((config?.thinking as Record<string, unknown>)?.budgetTokens).toBe(
-          64000
-        )
-      })
-
-      it("should resolve github-copilot Claude Sonnet to anthropic config", () => {
-        // given a github-copilot provider with Claude Sonnet model
-        const config = getThinkingConfig("github-copilot", "claude-sonnet-4-6")
-
-        // then should return anthropic thinking config
-        expect(config).not.toBeNull()
-        expect(config?.thinking).toBeDefined()
-      })
-
-      it("should handle Claude with dots in version number", () => {
-        // given a model ID with dots (claude-opus-4.6)
-        const config = getThinkingConfig("github-copilot", "claude-opus-4.6")
-
-        // then should still return anthropic thinking config
-        expect(config).not.toBeNull()
-        expect(config?.thinking).toBeDefined()
-      })
-    })
-
-    describe("Gemini models via github-copilot", () => {
-      it("should resolve github-copilot Gemini Pro to google config", () => {
-        // given a github-copilot provider with Gemini Pro model
-        const config = getThinkingConfig("github-copilot", "gemini-3-pro")
-
-        // then should return google thinking config
-        expect(config).not.toBeNull()
-        expect(config?.providerOptions).toBeDefined()
-        const googleOptions = (
-          config?.providerOptions as Record<string, unknown>
-        )?.google as Record<string, unknown>
-        expect(googleOptions?.thinkingConfig).toBeDefined()
-      })
-
-      it("should resolve github-copilot Gemini Flash to google config", () => {
-        // given a github-copilot provider with Gemini Flash model
-        const config = getThinkingConfig(
-          "github-copilot",
-          "gemini-3-flash"
-        )
-
-        // then should return google thinking config
-        expect(config).not.toBeNull()
-        expect(config?.providerOptions).toBeDefined()
-      })
-    })
-
-    describe("GPT models via github-copilot", () => {
-      it("should resolve github-copilot GPT-5.2 to openai config", () => {
-        // given a github-copilot provider with GPT-5.2 model
-        const config = getThinkingConfig("github-copilot", "gpt-5.2")
-
-        // then should return openai thinking config
-        expect(config).not.toBeNull()
-        expect(config?.reasoning_effort).toBe("high")
-      })
-
-      it("should resolve github-copilot GPT-5 to openai config", () => {
-        // given a github-copilot provider with GPT-5 model
-        const config = getThinkingConfig("github-copilot", "gpt-5")
-
-        // then should return openai thinking config
-        expect(config).not.toBeNull()
-        expect(config?.reasoning_effort).toBe("high")
-      })
-
-      it("should resolve github-copilot o1 to openai config", () => {
-        // given a github-copilot provider with o1 model
-        const config = getThinkingConfig("github-copilot", "o1-preview")
-
-        // then should return openai thinking config
-        expect(config).not.toBeNull()
-        expect(config?.reasoning_effort).toBe("high")
-      })
-
-      it("should resolve github-copilot o3 to openai config", () => {
-        // given a github-copilot provider with o3 model
-        const config = getThinkingConfig("github-copilot", "o3-mini")
-
-        // then should return openai thinking config
-        expect(config).not.toBeNull()
-        expect(config?.reasoning_effort).toBe("high")
-      })
-    })
-
-    describe("Unknown models via github-copilot", () => {
-      it("should return null for unknown model types", () => {
-        // given a github-copilot provider with unknown model
-        const config = getThinkingConfig("github-copilot", "llama-3-70b")
-
-        // then should return null (no matching provider)
-        expect(config).toBeNull()
-      })
-    })
-  })
-
   describe("Model ID normalization", () => {
     describe("getHighVariant with dots vs hyphens", () => {
       it("should handle dots in Claude version numbers", () => {
@@ -167,8 +49,8 @@ describe("think-mode switcher", () => {
 
       it("should handle Gemini preview variants", () => {
         // given Gemini preview model IDs
-        expect(getHighVariant("gemini-3-pro")).toBe(
-          "gemini-3-pro-high"
+        expect(getHighVariant("gemini-3.1-pro")).toBe(
+          "gemini-3-1-pro-high"
         )
         expect(getHighVariant("gemini-3-flash")).toBe(
           "gemini-3-flash-high"
@@ -179,7 +61,7 @@ describe("think-mode switcher", () => {
         // given model IDs that are already high variants
         expect(getHighVariant("claude-opus-4-6-high")).toBeNull()
         expect(getHighVariant("gpt-5-2-high")).toBeNull()
-        expect(getHighVariant("gemini-3-pro-high")).toBeNull()
+        expect(getHighVariant("gemini-3-1-pro-high")).toBeNull()
       })
 
       it("should return null for unknown models", () => {
@@ -195,7 +77,7 @@ describe("think-mode switcher", () => {
       // given model IDs with -high suffix
       expect(isAlreadyHighVariant("claude-opus-4-6-high")).toBe(true)
       expect(isAlreadyHighVariant("gpt-5-2-high")).toBe(true)
-      expect(isAlreadyHighVariant("gemini-3-pro-high")).toBe(true)
+      expect(isAlreadyHighVariant("gemini-3.1-pro-high")).toBe(true)
     })
 
     it("should detect -high suffix after normalization", () => {
@@ -208,7 +90,7 @@ describe("think-mode switcher", () => {
       expect(isAlreadyHighVariant("claude-opus-4-6")).toBe(false)
       expect(isAlreadyHighVariant("claude-opus-4.6")).toBe(false)
       expect(isAlreadyHighVariant("gpt-5.2")).toBe(false)
-      expect(isAlreadyHighVariant("gemini-3-pro")).toBe(false)
+      expect(isAlreadyHighVariant("gemini-3.1-pro")).toBe(false)
     })
 
     it("should return false for models with 'high' in name but not suffix", () => {
@@ -217,149 +99,6 @@ describe("think-mode switcher", () => {
     })
   })
 
-  describe("getThinkingConfig", () => {
-    describe("Already high variants", () => {
-      it("should return null for already-high variants", () => {
-        // given already-high model variants
-        expect(
-          getThinkingConfig("anthropic", "claude-opus-4-6-high")
-        ).toBeNull()
-        expect(getThinkingConfig("openai", "gpt-5-2-high")).toBeNull()
-        expect(getThinkingConfig("google", "gemini-3-pro-high")).toBeNull()
-      })
-
-      it("should return null for already-high variants via github-copilot", () => {
-        // given already-high model variants via github-copilot
-        expect(
-          getThinkingConfig("github-copilot", "claude-opus-4-6-high")
-        ).toBeNull()
-        expect(getThinkingConfig("github-copilot", "gpt-5.2-high")).toBeNull()
-      })
-    })
-
-    describe("Non-thinking-capable models", () => {
-      it("should return null for non-thinking-capable models", () => {
-        // given models that don't support thinking mode
-        expect(getThinkingConfig("anthropic", "claude-2")).toBeNull()
-        expect(getThinkingConfig("openai", "gpt-4")).toBeNull()
-        expect(getThinkingConfig("google", "gemini-1")).toBeNull()
-      })
-    })
-
-    describe("Unknown providers", () => {
-      it("should return null for unknown providers", () => {
-        // given unknown provider IDs
-        expect(getThinkingConfig("unknown-provider", "some-model")).toBeNull()
-        expect(getThinkingConfig("azure", "gpt-5")).toBeNull()
-      })
-    })
-  })
-
-  describe("Direct provider configs (backwards compatibility)", () => {
-    it("should still work for direct anthropic provider", () => {
-      // given direct anthropic provider
-      const config = getThinkingConfig("anthropic", "claude-opus-4-6")
-
-      // then should return anthropic thinking config
-      expect(config).not.toBeNull()
-      expect(config?.thinking).toBeDefined()
-      expect((config?.thinking as Record<string, unknown>)?.type).toBe("enabled")
-    })
-
-    it("should work for direct google-vertex-anthropic provider", () => {
-      //#given direct google-vertex-anthropic provider
-      const config = getThinkingConfig(
-        "google-vertex-anthropic",
-        "claude-opus-4-6"
-      )
-
-      //#when thinking config is resolved
-
-      //#then it should return anthropic-style thinking config
-      expect(config).not.toBeNull()
-      expect(config?.thinking).toBeDefined()
-      expect((config?.thinking as Record<string, unknown>)?.type).toBe("enabled")
-      expect((config?.thinking as Record<string, unknown>)?.budgetTokens).toBe(
-        64000
-      )
-    })
-
-    it("should still work for direct google provider", () => {
-      // given direct google provider
-      const config = getThinkingConfig("google", "gemini-3-pro")
-
-      // then should return google thinking config
-      expect(config).not.toBeNull()
-      expect(config?.providerOptions).toBeDefined()
-    })
-
-    it("should still work for amazon-bedrock provider", () => {
-      // given amazon-bedrock provider with claude model
-      const config = getThinkingConfig("amazon-bedrock", "claude-sonnet-4-6")
-
-      // then should return bedrock thinking config
-      expect(config).not.toBeNull()
-      expect(config?.reasoningConfig).toBeDefined()
-    })
-
-    it("should still work for google-vertex provider", () => {
-      // given google-vertex provider
-      const config = getThinkingConfig("google-vertex", "gemini-3-pro")
-
-      // then should return google-vertex thinking config
-      expect(config).not.toBeNull()
-      expect(config?.providerOptions).toBeDefined()
-      const vertexOptions = (config?.providerOptions as Record<string, unknown>)?.[
-        "google-vertex"
-      ] as Record<string, unknown>
-      expect(vertexOptions?.thinkingConfig).toBeDefined()
-    })
-
-    it("should work for direct openai provider", () => {
-      // given direct openai provider
-      const config = getThinkingConfig("openai", "gpt-5")
-
-      // then should return openai thinking config
-      expect(config).not.toBeNull()
-      expect(config?.reasoning_effort).toBe("high")
-    })
-  })
-
-  describe("THINKING_CONFIGS structure", () => {
-    it("should have correct structure for anthropic", () => {
-      const config = THINKING_CONFIGS.anthropic
-      expect(config.thinking).toBeDefined()
-      expect(config.maxTokens).toBe(128000)
-    })
-
-    it("should have correct structure for google-vertex-anthropic", () => {
-      //#given google-vertex-anthropic config entry
-      const config = THINKING_CONFIGS["google-vertex-anthropic"]
-
-      //#when structure is validated
-
-      //#then it should match anthropic style structure
-      expect(config.thinking).toBeDefined()
-      expect(config.maxTokens).toBe(128000)
-    })
-
-    it("should have correct structure for google", () => {
-      const config = THINKING_CONFIGS.google
-      expect(config.providerOptions).toBeDefined()
-    })
-
-    it("should have correct structure for openai", () => {
-      const config = THINKING_CONFIGS.openai
-      expect(config.reasoning_effort).toBe("high")
-    })
-
-    it("should have correct structure for amazon-bedrock", () => {
-      const config = THINKING_CONFIGS["amazon-bedrock"]
-      expect(config.reasoningConfig).toBeDefined()
-      expect(config.maxTokens).toBe(64000)
-    })
-  })
-
   describe("Custom provider prefixes support", () => {
     describe("getHighVariant with prefixes", () => {
       it("should preserve vertex_ai/ prefix when getting high variant", () => {
@@ -390,7 +129,7 @@ describe("think-mode switcher", () => {
         // given various custom prefixes
         expect(getHighVariant("azure/gpt-5")).toBe("azure/gpt-5-high")
         expect(getHighVariant("bedrock/claude-sonnet-4-6")).toBe("bedrock/claude-sonnet-4-6-high")
-        expect(getHighVariant("custom-llm/gemini-3-pro")).toBe("custom-llm/gemini-3-pro-high")
+        expect(getHighVariant("custom-llm/gemini-3.1-pro")).toBe("custom-llm/gemini-3-1-pro-high")
       })
 
       it("should return null for prefixed models without high variant mapping", () => {
@@ -411,7 +150,7 @@ describe("think-mode switcher", () => {
         // given prefixed model IDs with -high suffix
         expect(isAlreadyHighVariant("vertex_ai/claude-opus-4-6-high")).toBe(true)
         expect(isAlreadyHighVariant("openai/gpt-5-2-high")).toBe(true)
-        expect(isAlreadyHighVariant("custom/gemini-3-pro-high")).toBe(true)
+        expect(isAlreadyHighVariant("custom/gemini-3.1-pro-high")).toBe(true)
       })
 
       it("should return false for prefixed base models", () => {
@@ -426,141 +165,5 @@ describe("think-mode switcher", () => {
         expect(isAlreadyHighVariant("vertex_ai/gpt-5.2-high")).toBe(true)
       })
     })
-
-    describe("getThinkingConfig with prefixes", () => {
-      it("should return null for custom providers (not in THINKING_CONFIGS)", () => {
-        // given custom provider with prefixed Claude model
-        const config = getThinkingConfig("dia-llm", "vertex_ai/claude-sonnet-4-6")
-
-        // then should return null (custom provider not in THINKING_CONFIGS)
-        expect(config).toBeNull()
-      })
-
-      it("should work with prefixed models on known providers", () => {
-        // given known provider (anthropic) with prefixed model
-        // This tests that the base model name is correctly extracted for capability check
-        const config = getThinkingConfig("anthropic", "custom-prefix/claude-opus-4-6")
-
-        // then should return thinking config (base model is capable)
-        expect(config).not.toBeNull()
-        expect(config?.thinking).toBeDefined()
-      })
-
-      it("should return null for prefixed models that are already high", () => {
-        // given prefixed already-high model
-        const config = getThinkingConfig("anthropic", "vertex_ai/claude-opus-4-6-high")
-
-        // then should return null
-        expect(config).toBeNull()
-      })
-    })
-
-    describe("Real-world custom provider scenario", () => {
-      it("should handle LLM proxy with vertex_ai prefix correctly", () => {
-        // given a custom LLM proxy provider using vertex_ai/ prefix
-        const providerID = "dia-llm"
-        const modelID = "vertex_ai/claude-sonnet-4-6"
-
-        // when getting high variant
-        const highVariant = getHighVariant(modelID)
-
-        // then should preserve the prefix
-        expect(highVariant).toBe("vertex_ai/claude-sonnet-4-6-high")
-
-        // #and when checking if already high
-        expect(isAlreadyHighVariant(modelID)).toBe(false)
-        expect(isAlreadyHighVariant(highVariant!)).toBe(true)
-
-        // #and when getting thinking config for custom provider
-        const config = getThinkingConfig(providerID, modelID)
-
-        // then should return null (custom provider, not anthropic)
-        // This prevents applying incompatible thinking configs to custom providers
-        expect(config).toBeNull()
-      })
-
-      it("should not break when switching to high variant in think mode", () => {
-        // given think mode switching vertex_ai/claude model to high variant
-        const original = "vertex_ai/claude-opus-4-6"
-        const high = getHighVariant(original)
-
-        // then the high variant should be valid
-        expect(high).toBe("vertex_ai/claude-opus-4-6-high")
-
-        // #and should be recognized as already high
-        expect(isAlreadyHighVariant(high!)).toBe(true)
-
-        // #and switching again should return null (already high)
-        expect(getHighVariant(high!)).toBeNull()
-      })
-    })
-  })
-
-  describe("Z.AI GLM-4.7 provider support", () => {
-    describe("getThinkingConfig for zai-coding-plan", () => {
-      it("should return thinking config for glm-5", () => {
-        //#given a Z.ai GLM model
-        const config = getThinkingConfig("zai-coding-plan", "glm-5")
-
-        //#when thinking config is resolved
-
-        //#then thinking type is "disabled"
-        expect(config).not.toBeNull()
-        expect(config?.providerOptions).toBeDefined()
-        const zaiOptions = (config?.providerOptions as Record<string, unknown>)?.[
-          "zai-coding-plan"
-        ] as Record<string, unknown>
-        expect(zaiOptions?.extra_body).toBeDefined()
-        const extraBody = zaiOptions?.extra_body as Record<string, unknown>
-        expect(extraBody?.thinking).toBeDefined()
-        expect((extraBody?.thinking as Record<string, unknown>)?.type).toBe("disabled")
-      })
-
-      it("should return thinking config for glm-4.6v (multimodal)", () => {
-        // given zai-coding-plan provider with glm-4.6v model
-        const config = getThinkingConfig("zai-coding-plan", "glm-4.6v")
-
-        // then should return zai-coding-plan thinking config
-        expect(config).not.toBeNull()
-        expect(config?.providerOptions).toBeDefined()
-      })
-
-      it("should return null for non-GLM models on zai-coding-plan", () => {
-        // given zai-coding-plan provider with unknown model
-        const config = getThinkingConfig("zai-coding-plan", "some-other-model")
-
-        // then should return null
-        expect(config).toBeNull()
-      })
-    })
-
-    describe("HIGH_VARIANT_MAP for GLM", () => {
-      it("should NOT have high variant for glm-5", () => {
-        // given glm-5 model
-        const variant = getHighVariant("glm-5")
-
-        // then should return null (no high variant needed)
-        expect(variant).toBeNull()
-      })
-
-      it("should NOT have high variant for glm-4.6v", () => {
-        // given glm-4.6v model
-        const variant = getHighVariant("glm-4.6v")
-
-        // then should return null
-        expect(variant).toBeNull()
-      })
-    })
-  })
-
-  describe("THINKING_CONFIGS structure for zai-coding-plan", () => {
-    it("should have correct structure for zai-coding-plan", () => {
-      const config = THINKING_CONFIGS["zai-coding-plan"]
-      expect(config.providerOptions).toBeDefined()
-      const zaiOptions = (config.providerOptions as Record<string, unknown>)?.[
-        "zai-coding-plan"
-      ] as Record<string, unknown>
-      expect(zaiOptions?.extra_body).toBeDefined()
-    })
-  })
+})
 })

src/hooks/think-mode/switcher.ts

@@ -53,35 +53,7 @@ function normalizeModelID(modelID: string): string {
   return modelID.replace(/\.(\d+)/g, "-$1")
 }
 
-/**
- * Resolves proxy providers (like github-copilot) to their underlying provider.
- * This allows GitHub Copilot to inherit thinking configurations from the actual
- * model provider (Anthropic, Google, OpenAI).
- *
- * @example
- * resolveProvider("github-copilot", "claude-opus-4-6") // "anthropic"
- * resolveProvider("github-copilot", "gemini-3-pro") // "google"
- * resolveProvider("github-copilot", "gpt-5.2") // "openai"
- * resolveProvider("anthropic", "claude-opus-4-6") // "anthropic" (unchanged)
- */
-function resolveProvider(providerID: string, modelID: string): string {
-  // GitHub Copilot is a proxy - infer actual provider from model name
-  if (providerID === "github-copilot") {
-    const modelLower = modelID.toLowerCase()
-    if (modelLower.includes("claude")) return "anthropic"
-    if (modelLower.includes("gemini")) return "google"
-    if (
-      modelLower.includes("gpt") ||
-      modelLower.includes("o1") ||
-      modelLower.includes("o3")
-    ) {
-      return "openai"
-    }
-  }
 
-  // Direct providers or unknown - return as-is
-  return providerID
-}
 
 // Maps model IDs to their "high reasoning" variant (internal convention)
 // For OpenAI models, this signals that reasoning_effort should be set to "high"
@@ -90,8 +62,8 @@ const HIGH_VARIANT_MAP: Record<string, string> = {
   "claude-sonnet-4-6": "claude-sonnet-4-6-high",
   "claude-opus-4-6": "claude-opus-4-6-high",
    // Gemini
-   "gemini-3-pro": "gemini-3-pro-high",
-   "gemini-3-pro-low": "gemini-3-pro-high",
+   "gemini-3-1-pro": "gemini-3-1-pro-high",
+   "gemini-3-1-pro-low": "gemini-3-1-pro-high",
    "gemini-3-flash": "gemini-3-flash-high",
   // GPT-5
   "gpt-5": "gpt-5-high",
@@ -110,77 +82,12 @@ const HIGH_VARIANT_MAP: Record<string, string> = {
   "gpt-5-2-chat-latest": "gpt-5-2-chat-latest-high",
   "gpt-5-2-pro": "gpt-5-2-pro-high",
   // Antigravity (Google)
-  "antigravity-gemini-3-pro": "antigravity-gemini-3-pro-high",
+  "antigravity-gemini-3-1-pro": "antigravity-gemini-3-1-pro-high",
   "antigravity-gemini-3-flash": "antigravity-gemini-3-flash-high",
 }
 
 const ALREADY_HIGH: Set<string> = new Set(Object.values(HIGH_VARIANT_MAP))
 
-export const THINKING_CONFIGS = {
-  anthropic: {
-    thinking: {
-      type: "enabled",
-      budgetTokens: 64000,
-    },
-    maxTokens: 128000,
-  },
-  "google-vertex-anthropic": {
-    thinking: {
-      type: "enabled",
-      budgetTokens: 64000,
-    },
-    maxTokens: 128000,
-  },
-  "amazon-bedrock": {
-    reasoningConfig: {
-      type: "enabled",
-      budgetTokens: 32000,
-    },
-    maxTokens: 64000,
-  },
-  google: {
-    providerOptions: {
-      google: {
-        thinkingConfig: {
-          thinkingLevel: "HIGH",
-        },
-      },
-    },
-  },
-  "google-vertex": {
-    providerOptions: {
-      "google-vertex": {
-        thinkingConfig: {
-          thinkingLevel: "HIGH",
-        },
-      },
-    },
-  },
-  openai: {
-    reasoning_effort: "high",
-  },
-  "zai-coding-plan": {
-    providerOptions: {
-      "zai-coding-plan": {
-        extra_body: {
-          thinking: {
-            type: "disabled",
-          },
-        },
-      },
-    },
-  },
-} as const satisfies Record<string, Record<string, unknown>>
-
-const THINKING_CAPABLE_MODELS = {
-  anthropic: ["claude-sonnet-4", "claude-opus-4", "claude-3"],
-  "google-vertex-anthropic": ["claude-sonnet-4", "claude-opus-4", "claude-3"],
-  "amazon-bedrock": ["claude", "anthropic"],
-  google: ["gemini-2", "gemini-3"],
-  "google-vertex": ["gemini-2", "gemini-3"],
-  openai: ["gpt-5", "o1", "o3"],
-  "zai-coding-plan": ["glm"],
-} as const satisfies Record<string, readonly string[]>
 
 export function getHighVariant(modelID: string): string | null {
   const normalized = normalizeModelID(modelID)
@@ -207,37 +114,3 @@ export function isAlreadyHighVariant(modelID: string): boolean {
   return ALREADY_HIGH.has(base) || base.endsWith("-high")
 }
 
-type ThinkingProvider = keyof typeof THINKING_CONFIGS
-
-function isThinkingProvider(provider: string): provider is ThinkingProvider {
-  return provider in THINKING_CONFIGS
-}
-
-export function getThinkingConfig(
-  providerID: string,
-  modelID: string
-): Record<string, unknown> | null {
-  const normalized = normalizeModelID(modelID)
-  const { base } = extractModelPrefix(normalized)
-
-  if (isAlreadyHighVariant(normalized)) {
-    return null
-  }
-
-  const resolvedProvider = resolveProvider(providerID, modelID)
-
-  if (!isThinkingProvider(resolvedProvider)) {
-    return null
-  }
-
-  const config = THINKING_CONFIGS[resolvedProvider]
-  const capablePatterns = THINKING_CAPABLE_MODELS[resolvedProvider]
-
-  // Check capability using base model name (without prefix)
-  const baseLower = base.toLowerCase()
-  const isCapable = capablePatterns.some((pattern) =>
-    baseLower.includes(pattern.toLowerCase())
-  )
-
-  return isCapable ? config : null
-}

src/hooks/think-mode/types.ts

@@ -1,21 +1,16 @@
 export interface ThinkModeState {
   requested: boolean
   modelSwitched: boolean
-  thinkingConfigInjected: boolean
+  variantSet: boolean
   providerID?: string
   modelID?: string
 }
 
-export interface ModelRef {
+interface ModelRef {
   providerID: string
   modelID: string
 }
 
-export interface MessageWithModel {
+interface MessageWithModel {
   model?: ModelRef
 }
-
-export interface ThinkModeInput {
-  parts: Array<{ type: string; text?: string }>
-  message: MessageWithModel
-}

src/hooks/todo-continuation-enforcer/constants.ts

@@ -17,6 +17,6 @@ export const TOAST_DURATION_MS = 900
 export const COUNTDOWN_GRACE_PERIOD_MS = 500
 
 export const ABORT_WINDOW_MS = 3000
-export const CONTINUATION_COOLDOWN_MS = 30_000
+export const CONTINUATION_COOLDOWN_MS = 5_000
 export const MAX_CONSECUTIVE_FAILURES = 5
 export const FAILURE_RESET_WINDOW_MS = 5 * 60 * 1000

src/hooks/todo-continuation-enforcer/idle-event.ts

@@ -15,6 +15,7 @@ import {
   MAX_CONSECUTIVE_FAILURES,
 } from "./constants"
 import { isLastAssistantMessageAborted } from "./abort-detection"
+import { hasUnansweredQuestion } from "./pending-question-detection"
 import { getIncompleteCount } from "./todo"
 import type { MessageInfo, ResolvedMessageInfo, Todo } from "./types"
 import type { SessionStateStore } from "./session-state"
@@ -74,6 +75,10 @@ export async function handleSessionIdle(args: {
       log(`[${HOOK_NAME}] Skipped: last assistant message was aborted (API fallback)`, { sessionID })
       return
     }
+    if (hasUnansweredQuestion(messages)) {
+      log(`[${HOOK_NAME}] Skipped: pending question awaiting user response`, { sessionID })
+      return
+    }
   } catch (error) {
     log(`[${HOOK_NAME}] Messages fetch failed, continuing`, { sessionID, error: String(error) })
   }

src/hooks/todo-continuation-enforcer/pending-question-detection.test.ts

@@ -0,0 +1,100 @@
+/// <reference types="bun-types" />
+import { describe, expect, test } from "bun:test"
+
+import { hasUnansweredQuestion } from "./pending-question-detection"
+
+describe("hasUnansweredQuestion", () => {
+  test("given empty messages, returns false", () => {
+    expect(hasUnansweredQuestion([])).toBe(false)
+  })
+
+  test("given null-ish input, returns false", () => {
+    expect(hasUnansweredQuestion(undefined as never)).toBe(false)
+  })
+
+  test("given last assistant message with question tool_use, returns true", () => {
+    const messages = [
+      { info: { role: "user" } },
+      {
+        info: { role: "assistant" },
+        parts: [
+          { type: "tool_use", name: "question" },
+        ],
+      },
+    ]
+    expect(hasUnansweredQuestion(messages)).toBe(true)
+  })
+
+  test("given last assistant message with question tool-invocation, returns true", () => {
+    const messages = [
+      { info: { role: "user" } },
+      {
+        info: { role: "assistant" },
+        parts: [
+          { type: "tool-invocation", toolName: "question" },
+        ],
+      },
+    ]
+    expect(hasUnansweredQuestion(messages)).toBe(true)
+  })
+
+  test("given user message after question (answered), returns false", () => {
+    const messages = [
+      {
+        info: { role: "assistant" },
+        parts: [
+          { type: "tool_use", name: "question" },
+        ],
+      },
+      { info: { role: "user" } },
+    ]
+    expect(hasUnansweredQuestion(messages)).toBe(false)
+  })
+
+  test("given assistant message with non-question tool, returns false", () => {
+    const messages = [
+      { info: { role: "user" } },
+      {
+        info: { role: "assistant" },
+        parts: [
+          { type: "tool_use", name: "bash" },
+        ],
+      },
+    ]
+    expect(hasUnansweredQuestion(messages)).toBe(false)
+  })
+
+  test("given assistant message with no parts, returns false", () => {
+    const messages = [
+      { info: { role: "user" } },
+      { info: { role: "assistant" } },
+    ]
+    expect(hasUnansweredQuestion(messages)).toBe(false)
+  })
+
+  test("given role on message directly (not in info), returns true for question", () => {
+    const messages = [
+      { role: "user" },
+      {
+        role: "assistant",
+        parts: [
+          { type: "tool_use", name: "question" },
+        ],
+      },
+    ]
+    expect(hasUnansweredQuestion(messages)).toBe(true)
+  })
+
+  test("given mixed tools including question, returns true", () => {
+    const messages = [
+      {
+        info: { role: "assistant" },
+        parts: [
+          { type: "tool_use", name: "bash" },
+          { type: "tool_use", name: "question" },
+        ],
+      },
+    ]
+    expect(hasUnansweredQuestion(messages)).toBe(true)
+  })
+})

src/hooks/todo-continuation-enforcer/pending-question-detection.ts

@@ -0,0 +1,40 @@
+import { log } from "../../shared/logger"
+import { HOOK_NAME } from "./constants"
+
+interface MessagePart {
+  type: string
+  name?: string
+  toolName?: string
+}
+
+interface Message {
+  info?: { role?: string }
+  role?: string
+  parts?: MessagePart[]
+}
+
+export function hasUnansweredQuestion(messages: Message[]): boolean {
+  if (!messages || messages.length === 0) return false
+
+  for (let i = messages.length - 1; i >= 0; i--) {
+    const msg = messages[i]
+    const role = msg.info?.role ?? msg.role
+
+    if (role === "user") return false
+
+    if (role === "assistant" && msg.parts) {
+      const hasQuestion = msg.parts.some(
+        (part) =>
+          (part.type === "tool_use" || part.type === "tool-invocation") &&
+          (part.name === "question" || part.toolName === "question"),
+      )
+      if (hasQuestion) {
+        log(`[${HOOK_NAME}] Detected pending question tool in last assistant message`)
+        return true
+      }
+      return false
+    }
+  }
+
+  return false
+}

src/hooks/todo-continuation-enforcer/todo-continuation-enforcer.test.ts

@@ -297,6 +297,31 @@ describe("todo-continuation-enforcer", () => {
     expect(promptCalls).toHaveLength(0)
   })
 
+  test("should not inject when remaining todos are blocked or deleted", async () => {
+    // given - session where non-completed todos are only blocked/deleted
+    const sessionID = "main-blocked-deleted"
+    setMainSession(sessionID)
+
+    const mockInput = createMockPluginInput()
+    mockInput.client.session.todo = async () => ({ data: [
+      { id: "1", content: "Blocked task", status: "blocked", priority: "high" },
+      { id: "2", content: "Deleted task", status: "deleted", priority: "medium" },
+      { id: "3", content: "Done task", status: "completed", priority: "low" },
+    ]})
+
+    const hook = createTodoContinuationEnforcer(mockInput, {})
+
+    // when - session goes idle
+    await hook.handler({
+      event: { type: "session.idle", properties: { sessionID } },
+    })
+
+    await fakeTimers.advanceBy(3000)
+
+    // then - no continuation injected
+    expect(promptCalls).toHaveLength(0)
+  })
+
   test("should not inject when background tasks are running", async () => {
     // given - session with running background tasks
     const sessionID = "main-789"
@@ -1663,7 +1688,6 @@ describe("todo-continuation-enforcer", () => {
   test("should cancel all countdowns via cancelAllCountdowns", async () => {
     // given - multiple sessions with running countdowns
     const session1 = "main-cancel-all-1"
-    const session2 = "main-cancel-all-2"
     setMainSession(session1)
 
     const hook = createTodoContinuationEnforcer(createMockPluginInput(), {})

src/hooks/todo-continuation-enforcer/todo.ts

@@ -1,5 +1,11 @@
 import type { Todo } from "./types"
 
 export function getIncompleteCount(todos: Todo[]): number {
-  return todos.filter((todo) => todo.status !== "completed" && todo.status !== "cancelled").length
+  return todos.filter(
+    (todo) =>
+      todo.status !== "completed"
+      && todo.status !== "cancelled"
+      && todo.status !== "blocked"
+      && todo.status !== "deleted",
+  ).length
 }

src/plugin-config.test.ts

@@ -32,7 +32,7 @@ describe("mergeConfigs", () => {
             temperature: 0.3,
           },
           visual: {
-            model: "google/gemini-3-pro",
+            model: "google/gemini-3.1-pro",
           },
         },
       } as unknown as OhMyOpenCodeConfig;
@@ -46,7 +46,7 @@ describe("mergeConfigs", () => {
       // then quick should be preserved from base
       expect(result.categories?.quick?.model).toBe("anthropic/claude-haiku-4-5");
       // then visual should be added from override
-      expect(result.categories?.visual?.model).toBe("google/gemini-3-pro");
+      expect(result.categories?.visual?.model).toBe("google/gemini-3.1-pro");
     });
 
     it("should preserve base categories when override has no categories", () => {

src/plugin-handlers/agent-config-handler.ts

@@ -135,7 +135,14 @@ export async function applyAgentConfig(params: {
     useTaskSystem,
     disableOmoEnv,
   );
+  const disabledAgentNames = new Set(
+    (migratedDisabledAgents ?? []).map(a => a.toLowerCase())
+  );
 
+  const filterDisabledAgents = (agents: Record<string, unknown>) =>
+    Object.fromEntries(
+      Object.entries(agents).filter(([name]) => !disabledAgentNames.has(name.toLowerCase()))
+    );
   const isSisyphusEnabled = params.pluginConfig.sisyphus_agent?.disabled !== true;
   const builderEnabled =
     params.pluginConfig.sisyphus_agent?.default_builder_enabled ?? false;
@@ -223,9 +230,9 @@ export async function applyAgentConfig(params: {
       ...Object.fromEntries(
         Object.entries(builtinAgents).filter(([key]) => key !== "sisyphus"),
       ),
-      ...userAgents,
-      ...projectAgents,
-      ...pluginAgents,
+      ...filterDisabledAgents(userAgents),
+      ...filterDisabledAgents(projectAgents),
+      ...filterDisabledAgents(pluginAgents),
       ...filteredConfigAgents,
       build: { ...migratedBuild, mode: "subagent", hidden: true },
       ...(planDemoteConfig ? { plan: planDemoteConfig } : {}),
@@ -233,9 +240,9 @@ export async function applyAgentConfig(params: {
   } else {
     params.config.agent = {
       ...builtinAgents,
-      ...userAgents,
-      ...projectAgents,
-      ...pluginAgents,
+      ...filterDisabledAgents(userAgents),
+      ...filterDisabledAgents(projectAgents),
+      ...filterDisabledAgents(pluginAgents),
       ...configAgent,
     };
   }

src/plugin-handlers/agent-key-remapper.test.ts

@@ -2,7 +2,7 @@ import { describe, it, expect } from "bun:test"
 import { remapAgentKeysToDisplayNames } from "./agent-key-remapper"
 
 describe("remapAgentKeysToDisplayNames", () => {
-  it("remaps known agent keys to display names", () => {
+  it("remaps known agent keys to display names while preserving original keys", () => {
     // given agents with lowercase keys
     const agents = {
       sisyphus: { prompt: "test", mode: "primary" },
@@ -12,10 +12,11 @@ describe("remapAgentKeysToDisplayNames", () => {
     // when remapping
     const result = remapAgentKeysToDisplayNames(agents)
 
-    // then known agents get display name keys
+    // then known agents get display name keys and original keys remain accessible
     expect(result["Sisyphus (Ultraworker)"]).toBeDefined()
     expect(result["oracle"]).toBeDefined()
-    expect(result["sisyphus"]).toBeUndefined()
+    expect(result["sisyphus"]).toBeDefined()
+    expect(result["Sisyphus (Ultraworker)"]).toBe(result["sisyphus"])
   })
 
   it("preserves unknown agent keys unchanged", () => {
@@ -31,7 +32,7 @@ describe("remapAgentKeysToDisplayNames", () => {
     expect(result["custom-agent"]).toBeDefined()
   })
 
-  it("remaps all core agents", () => {
+  it("remaps all core agents while preserving original keys", () => {
     // given all core agents
     const agents = {
       sisyphus: {},
@@ -46,15 +47,20 @@ describe("remapAgentKeysToDisplayNames", () => {
     // when remapping
     const result = remapAgentKeysToDisplayNames(agents)
 
-    // then all get display name keys
-    expect(Object.keys(result)).toEqual([
-      "Sisyphus (Ultraworker)",
-      "Hephaestus (Deep Agent)",
-      "Prometheus (Plan Builder)",
-      "Atlas (Plan Executor)",
-      "Metis (Plan Consultant)",
-      "Momus (Plan Critic)",
-      "Sisyphus-Junior",
-    ])
+    // then all get display name keys while original keys still work
+    expect(result["Sisyphus (Ultraworker)"]).toBeDefined()
+    expect(result["sisyphus"]).toBeDefined()
+    expect(result["Hephaestus (Deep Agent)"]).toBeDefined()
+    expect(result["hephaestus"]).toBeDefined()
+    expect(result["Prometheus (Plan Builder)"]).toBeDefined()
+    expect(result["prometheus"]).toBeDefined()
+    expect(result["Atlas (Plan Executor)"]).toBeDefined()
+    expect(result["atlas"]).toBeDefined()
+    expect(result["Metis (Plan Consultant)"]).toBeDefined()
+    expect(result["metis"]).toBeDefined()
+    expect(result["Momus (Plan Critic)"]).toBeDefined()
+    expect(result["momus"]).toBeDefined()
+    expect(result["Sisyphus-Junior"]).toBeDefined()
+    expect(result["sisyphus-junior"]).toBeDefined()
   })
 })

src/plugin-handlers/agent-key-remapper.ts

@@ -9,6 +9,7 @@ export function remapAgentKeysToDisplayNames(
     const displayName = AGENT_DISPLAY_NAMES[key]
     if (displayName && displayName !== key) {
       result[displayName] = value
+      result[key] = value
     } else {
       result[key] = value
     }

src/plugin-handlers/config-handler-formatter.test.ts

@@ -0,0 +1,120 @@
+import { afterEach, beforeEach, describe, expect, spyOn, test } from "bun:test"
+
+import type { OhMyOpenCodeConfig } from "../config"
+import { createConfigHandler } from "./config-handler"
+import * as agentConfigHandler from "./agent-config-handler"
+import * as commandConfigHandler from "./command-config-handler"
+import * as mcpConfigHandler from "./mcp-config-handler"
+import * as pluginComponentsLoader from "./plugin-components-loader"
+import * as providerConfigHandler from "./provider-config-handler"
+import * as shared from "../shared"
+import * as toolConfigHandler from "./tool-config-handler"
+
+let logSpy: ReturnType<typeof spyOn>
+let loadPluginComponentsSpy: ReturnType<typeof spyOn>
+let applyAgentConfigSpy: ReturnType<typeof spyOn>
+let applyToolConfigSpy: ReturnType<typeof spyOn>
+let applyMcpConfigSpy: ReturnType<typeof spyOn>
+let applyCommandConfigSpy: ReturnType<typeof spyOn>
+let applyProviderConfigSpy: ReturnType<typeof spyOn>
+
+beforeEach(() => {
+  logSpy = spyOn(shared, "log").mockImplementation(() => {})
+  loadPluginComponentsSpy = spyOn(
+    pluginComponentsLoader,
+    "loadPluginComponents",
+  ).mockResolvedValue({
+    commands: {},
+    skills: {},
+    agents: {},
+    mcpServers: {},
+    hooksConfigs: [],
+    plugins: [],
+    errors: [],
+  })
+  applyAgentConfigSpy = spyOn(agentConfigHandler, "applyAgentConfig").mockResolvedValue(
+    {},
+  )
+  applyToolConfigSpy = spyOn(toolConfigHandler, "applyToolConfig").mockImplementation(
+    () => {},
+  )
+  applyMcpConfigSpy = spyOn(mcpConfigHandler, "applyMcpConfig").mockResolvedValue()
+  applyCommandConfigSpy = spyOn(
+    commandConfigHandler,
+    "applyCommandConfig",
+  ).mockResolvedValue()
+  applyProviderConfigSpy = spyOn(
+    providerConfigHandler,
+    "applyProviderConfig",
+  ).mockImplementation(() => {})
+})
+
+afterEach(() => {
+  logSpy.mockRestore()
+  loadPluginComponentsSpy.mockRestore()
+  applyAgentConfigSpy.mockRestore()
+  applyToolConfigSpy.mockRestore()
+  applyMcpConfigSpy.mockRestore()
+  applyCommandConfigSpy.mockRestore()
+  applyProviderConfigSpy.mockRestore()
+})
+
+describe("createConfigHandler formatter pass-through", () => {
+  test("preserves formatter object configured in opencode config", async () => {
+    // given
+    const pluginConfig: OhMyOpenCodeConfig = {}
+    const formatterConfig = {
+      prettier: {
+        command: ["prettier", "--write"],
+        extensions: [".ts", ".tsx"],
+        environment: {
+          PRETTIERD_DEFAULT_CONFIG: ".prettierrc",
+        },
+      },
+      eslint: {
+        disabled: false,
+        command: ["eslint", "--fix"],
+        extensions: [".js", ".ts"],
+      },
+    }
+    const config: Record<string, unknown> = {
+      formatter: formatterConfig,
+    }
+    const handler = createConfigHandler({
+      ctx: { directory: "/tmp" },
+      pluginConfig,
+      modelCacheState: {
+        anthropicContext1MEnabled: false,
+        modelContextLimitsCache: new Map(),
+      },
+    })
+
+    // when
+    await handler(config)
+
+    // then
+    expect(config.formatter).toEqual(formatterConfig)
+  })
+
+  test("preserves formatter=false configured in opencode config", async () => {
+    // given
+    const pluginConfig: OhMyOpenCodeConfig = {}
+    const config: Record<string, unknown> = {
+      formatter: false,
+    }
+    const handler = createConfigHandler({
+      ctx: { directory: "/tmp" },
+      pluginConfig,
+      modelCacheState: {
+        anthropicContext1MEnabled: false,
+        modelContextLimitsCache: new Map(),
+      },
+    })
+
+    // when
+    await handler(config)
+
+    // then
+    expect(config.formatter).toBe(false)
+  })
+})

src/plugin-handlers/config-handler.test.ts

@@ -823,7 +823,7 @@ describe("Prometheus category config resolution", () => {
 
     // then
     expect(config).toBeDefined()
-    expect(config?.model).toBe("google/gemini-3-pro")
+    expect(config?.model).toBe("google/gemini-3.1-pro")
   })
 
   test("user categories override default categories", () => {

src/plugin-handlers/config-handler.ts

@@ -20,6 +20,8 @@ export function createConfigHandler(deps: ConfigHandlerDeps) {
   const { ctx, pluginConfig, modelCacheState } = deps;
 
   return async (config: Record<string, unknown>) => {
+    const formatterConfig = config.formatter;
+
     applyProviderConfig({ config, modelCacheState });
 
     const pluginComponents = await loadPluginComponents({ pluginConfig });
@@ -35,6 +37,8 @@ export function createConfigHandler(deps: ConfigHandlerDeps) {
     await applyMcpConfig({ config, pluginConfig, pluginComponents });
     await applyCommandConfig({ config, pluginConfig, ctx, pluginComponents });
 
+    config.formatter = formatterConfig;
+
     log("[config-handler] config handler applied", {
       agentCount: Object.keys(agentResult).length,
       commandCount: Object.keys((config.command as Record<string, unknown>) ?? {})

src/plugin/chat-message.test.ts

@@ -19,6 +19,7 @@ function createMockHandlerArgs(overrides?: {
     },
     hooks: {
       stopContinuationGuard: null,
+      backgroundNotificationHook: null,
       keywordDetector: null,
       claudeCodeHooks: null,
       autoSlashCommand: null,
@@ -115,4 +116,30 @@ describe("createChatMessageHandler - TUI variant passthrough", () => {
     //#then - gate should still be marked as applied
     expect(args._appliedSessions).toContain("test-session")
   })
+
+  test("injects queued background notifications through chat.message hook", async () => {
+    //#given
+    const args = createMockHandlerArgs()
+    args.hooks.backgroundNotificationHook = {
+      "chat.message": async (
+        _input: { sessionID: string },
+        output: ChatMessageHandlerOutput,
+      ): Promise<void> => {
+        output.parts.push({
+          type: "text",
+          text: "<system-reminder>[BACKGROUND TASK COMPLETED]</system-reminder>",
+        })
+      },
+    }
+    const handler = createChatMessageHandler(args)
+    const input = createMockInput("hephaestus", { providerID: "openai", modelID: "gpt-5.3-codex" })
+    const output = createMockOutput()
+
+    //#when
+    await handler(input, output)
+
+    //#then
+    expect(output.parts).toHaveLength(1)
+    expect(output.parts[0].text).toContain("[BACKGROUND TASK COMPLETED]")
+  })
 })

src/plugin/chat-message.ts

@@ -97,8 +97,10 @@ export function createChatMessageHandler(args: {
       setSessionModel(input.sessionID, input.model)
     }
     await hooks.stopContinuationGuard?.["chat.message"]?.(input)
+    await hooks.backgroundNotificationHook?.["chat.message"]?.(input, output)
     await hooks.runtimeFallback?.["chat.message"]?.(input, output)
     await hooks.keywordDetector?.["chat.message"]?.(input, output)
+    await hooks.thinkMode?.["chat.message"]?.(input, output)
     await hooks.claudeCodeHooks?.["chat.message"]?.(input, output)
     await hooks.autoSlashCommand?.["chat.message"]?.(input, output)
     await hooks.noSisyphusGpt?.["chat.message"]?.(input, output)

src/plugin/hooks/create-continuation-hooks.ts

@@ -49,7 +49,10 @@ export function createContinuationHooks(args: {
     safeCreateHook(hookName, factory, { enabled: safeHookEnabled })
 
   const stopContinuationGuard = isHookEnabled("stop-continuation-guard")
-    ? safeHook("stop-continuation-guard", () => createStopContinuationGuardHook(ctx))
+    ? safeHook("stop-continuation-guard", () =>
+        createStopContinuationGuardHook(ctx, {
+          backgroundManager,
+        }))
     : null
 
   const compactionContextInjector = isHookEnabled("compaction-context-injector")

src/plugin/hooks/create-session-hooks.ts

@@ -232,7 +232,10 @@ export function createSessionHooks(args: {
     : null
 
   const noHephaestusNonGpt = isHookEnabled("no-hephaestus-non-gpt")
-    ? safeHook("no-hephaestus-non-gpt", () => createNoHephaestusNonGptHook(ctx))
+    ? safeHook("no-hephaestus-non-gpt", () =>
+      createNoHephaestusNonGptHook(ctx, {
+        allowNonGptModel: pluginConfig.agents?.hephaestus?.allow_non_gpt_model,
+      }))
     : null
 
   const questionLabelTruncator = isHookEnabled("question-label-truncator")

src/plugin/ultrawork-db-model-override.ts

@@ -21,11 +21,10 @@ function tryUpdateMessageModel(
   )
   const result = stmt.run(targetModel.providerID, targetModel.modelID, messageId)
   if (result.changes === 0) return false
-
   if (variant) {
     db.prepare(
-      `UPDATE message SET data = json_set(data, '$.variant', ?, '$.thinking', ?) WHERE id = ?`,
-    ).run(variant, variant, messageId)
+      `UPDATE message SET data = json_set(data, '$.variant', ?) WHERE id = ?`,
+    ).run(variant, messageId)
   }
   return true
 }

src/plugin/ultrawork-model-override.test.ts

@@ -279,6 +279,30 @@ describe("applyUltraworkModelOverrideOnMessage", () => {
     )
   })
 
+  test("should override keyword-detector variant with configured ultrawork variant on deferred path", () => {
+    //#given
+    const config = createConfig("sisyphus", {
+      model: "anthropic/claude-opus-4-6",
+      variant: "extended",
+    })
+    const output = createOutput("ultrawork do something", { messageId: "msg_123" })
+    output.message["variant"] = "max"
+    output.message["thinking"] = "max"
+    const tui = createMockTui()
+
+    //#when
+    applyUltraworkModelOverrideOnMessage(config, "sisyphus", output, tui)
+
+    //#then
+    expect(dbOverrideSpy).toHaveBeenCalledWith(
+      "msg_123",
+      { providerID: "anthropic", modelID: "claude-opus-4-6" },
+      "extended",
+    )
+    expect(output.message["variant"]).toBe("extended")
+    expect(output.message["thinking"]).toBe("extended")
+  })
+
   test("should NOT mutate output.message.model when message ID present", () => {
     //#given
     const sonnetModel = { providerID: "anthropic", modelID: "claude-sonnet-4-6" }
@@ -308,7 +332,6 @@ describe("applyUltraworkModelOverrideOnMessage", () => {
     //#then
     expect(output.message.model).toEqual({ providerID: "anthropic", modelID: "claude-opus-4-6" })
     expect(output.message["variant"]).toBe("max")
-    expect(output.message["thinking"]).toBe("max")
     expect(dbOverrideSpy).not.toHaveBeenCalled()
   })
 
@@ -324,7 +347,6 @@ describe("applyUltraworkModelOverrideOnMessage", () => {
     //#then
     expect(output.message.model).toBeUndefined()
     expect(output.message["variant"]).toBe("high")
-    expect(output.message["thinking"]).toBe("high")
     expect(dbOverrideSpy).not.toHaveBeenCalled()
   })
 

src/plugin/ultrawork-model-override.ts

@@ -114,11 +114,12 @@ export function applyUltraworkModelOverrideOnMessage(
   const override = resolveUltraworkOverride(pluginConfig, inputAgentName, output, sessionID)
   if (!override) return
 
+  if (override.variant) {
+    output.message["variant"] = override.variant
+    output.message["thinking"] = override.variant
+  }
+
   if (!override.providerID || !override.modelID) {
-    if (override.variant) {
-      output.message["variant"] = override.variant
-      output.message["thinking"] = override.variant
-    }
     return
   }
 
@@ -132,11 +133,8 @@ export function applyUltraworkModelOverrideOnMessage(
   if (!messageId) {
     log("[ultrawork-model-override] No message ID found, falling back to direct mutation")
     output.message.model = targetModel
-    if (override.variant) {
-      output.message["variant"] = override.variant
-      output.message["thinking"] = override.variant
-    }
     return
+
   }
 
   const fromModel = (output.message.model as { modelID?: string } | undefined)?.modelID ?? "unknown"

src/shared/migration.test.ts

@@ -774,7 +774,7 @@ describe("migrateAgentConfigToCategory", () => {
   test("migrates model to category when mapping exists", () => {
     // given: Config with a model that has a category mapping
     const config = {
-      model: "google/gemini-3-pro",
+      model: "google/gemini-3.1-pro",
       temperature: 0.5,
       top_p: 0.9,
     }
@@ -823,7 +823,7 @@ describe("migrateAgentConfigToCategory", () => {
   test("handles all mapped models correctly", () => {
     // given: Configs for each mapped model
     const configs = [
-      { model: "google/gemini-3-pro" },
+      { model: "google/gemini-3.1-pro" },
       { model: "google/gemini-3-flash" },
       { model: "openai/gpt-5.2" },
       { model: "anthropic/claude-haiku-4-5" },
@@ -893,7 +893,7 @@ describe("shouldDeleteAgentConfig", () => {
     // given: Config with fields matching category defaults
     const config = {
       category: "visual-engineering",
-      model: "google/gemini-3-pro",
+      model: "google/gemini-3.1-pro",
     }
 
     // when: Check if config should be deleted
@@ -1021,7 +1021,7 @@ describe("migrateConfigFile with backup", () => {
       agents: {
         "multimodal-looker": { model: "anthropic/claude-haiku-4-5" },
         oracle: { model: "openai/gpt-5.2" },
-        "my-custom-agent": { model: "google/gemini-3-pro" },
+        "my-custom-agent": { model: "google/gemini-3.1-pro" },
       },
     }
 
@@ -1037,7 +1037,7 @@ describe("migrateConfigFile with backup", () => {
     const agents = rawConfig.agents as Record<string, Record<string, unknown>>
     expect(agents["multimodal-looker"].model).toBe("anthropic/claude-haiku-4-5")
     expect(agents.oracle.model).toBe("openai/gpt-5.2")
-    expect(agents["my-custom-agent"].model).toBe("google/gemini-3-pro")
+    expect(agents["my-custom-agent"].model).toBe("google/gemini-3.1-pro")
   })
 
   test("preserves category setting when explicitly set", () => {