fix(notepad-guard,start-work): wire dispatch and match .omo paths

notepad-write-guard:
- The hook was created by create-tool-guard-hooks but tool-execute-before
  never invoked it, so the guard was inert.
- It also only matched .sisyphus/notepads, missing the current
  .omo/notepads layout introduced by the workspace migration.
- Add the dispatch call alongside writeExistingFileGuard, and extend
  NOTEPAD_ROOTS to cover both paths via normalize() + sep. New
  integration test pins the wire and the .omo block; the existing unit
  test now asserts both paths.

start-work session-plan-affinity:
- PLAN_PATH_PATTERN only matched .sisyphus/plans, so sessions referring
  to plans under .omo/plans returned null and start-work missed the
  current session's own plan.
- Extend the regex to .(sisyphus|omo)/plans and add findPrometheusPlans
  in packages/boulder-state to scan both directories during the
  transition. New regression test pins .omo/plans matching; legacy
  .sisyphus/plans coverage preserved.

packages/boulder-state/src/storage/plan-progress.ts

@@ -11,19 +11,23 @@ const UNCHECKED_CHECKBOX_PATTERN = /^(\s*)[-*]\s*\[\s*\]\s*(.+)$/
 const CHECKED_CHECKBOX_PATTERN = /^(\s*)[-*]\s*\[[xX]\]\s*(.+)$/
 const TODO_TASK_PATTERN = /^\d+\.\s+/
 const FINAL_WAVE_TASK_PATTERN = /^F\d+\.\s+/i
+const LEGACY_PROMETHEUS_PLANS_DIR = ".sisyphus/plans"
+const PROMETHEUS_PLAN_DIRS = [PROMETHEUS_PLANS_DIR, LEGACY_PROMETHEUS_PLANS_DIR] as const
 
 type ProgressSection = "todo" | "final-wave" | "other"
 
 export function findPrometheusPlans(directory: string): string[] {
-  const plansDir = join(directory, PROMETHEUS_PLANS_DIR)
-  if (!existsSync(plansDir)) {
-    return []
-  }
-
   try {
-    return readdirSync(plansDir)
-      .filter((file) => file.endsWith(".md"))
-      .map((file) => join(plansDir, file))
+    return PROMETHEUS_PLAN_DIRS.flatMap((planDir) => {
+      const plansDir = join(directory, planDir)
+      if (!existsSync(plansDir)) {
+        return []
+      }
+
+      return readdirSync(plansDir)
+        .filter((file) => file.endsWith(".md"))
+        .map((file) => join(plansDir, file))
+    })
       .sort((left, right) => statSync(right).mtimeMs - statSync(left).mtimeMs)
   } catch {
     return []

src/hooks/notepad-write-guard/index.test.ts

@@ -15,65 +15,64 @@ async function invoke(
   )
 }
 
+async function expectWriteBlocked(hook: Hook, filePath: string): Promise<void> {
+  let caughtMessage = ""
+  try {
+    await invoke(hook, { tool: "write", filePath })
+  } catch (err) {
+    if (err instanceof Error) {
+      caughtMessage = err.message
+    } else {
+      throw err
+    }
+  }
+
+  expect(caughtMessage).toContain(REFUSED_PREFIX)
+}
+
 describe("createNotepadWriteGuardHook", () => {
   test("#given notepad decisions.md #when write executes #then rejects with actionable error", async () => {
     const hook = createNotepadWriteGuardHook()
-    await expect(
-      invoke(hook, {
-        tool: "write",
-        filePath: ".sisyphus/notepads/foo/decisions.md",
-      }),
-    ).rejects.toThrow(REFUSED_PREFIX)
+    await expectWriteBlocked(hook, ".sisyphus/notepads/foo/decisions.md")
   })
 
   test("#given notepad state.json #when write executes #then rejects (entire notepad subtree blocked)", async () => {
     const hook = createNotepadWriteGuardHook()
-    await expect(
-      invoke(hook, {
-        tool: "write",
-        filePath: ".sisyphus/notepads/foo/state.json",
-      }),
-    ).rejects.toThrow(REFUSED_PREFIX)
+    await expectWriteBlocked(hook, ".sisyphus/notepads/foo/state.json")
+  })
+
+  test("#given current omo notepad file #when write executes #then rejects", async () => {
+    const hook = createNotepadWriteGuardHook()
+    await expectWriteBlocked(hook, ".omo/notepads/foo/decisions.md")
   })
 
   test("#given regular src file #when write executes #then allows (not intercepted)", async () => {
     const hook = createNotepadWriteGuardHook()
-    await expect(
-      invoke(hook, {
-        tool: "write",
-        filePath: "src/index.ts",
-      }),
-    ).resolves.toBeUndefined()
+    await invoke(hook, {
+      tool: "write",
+      filePath: "src/index.ts",
+    })
   })
 
   test("#given non-write tool on notepad path #when executes #then allows", async () => {
     const hook = createNotepadWriteGuardHook()
-    await expect(
-      invoke(hook, {
-        tool: "read",
-        filePath: ".sisyphus/notepads/foo/decisions.md",
-      }),
-    ).resolves.toBeUndefined()
+    await invoke(hook, {
+      tool: "read",
+      filePath: ".sisyphus/notepads/foo/decisions.md",
+    })
   })
 
   test("#given sisyphus plans file (not notepads) #when write executes #then allows", async () => {
     const hook = createNotepadWriteGuardHook()
-    await expect(
-      invoke(hook, {
-        tool: "write",
-        filePath: ".sisyphus/plans/my-plan.md",
-      }),
-    ).resolves.toBeUndefined()
+    await invoke(hook, {
+      tool: "write",
+      filePath: ".sisyphus/plans/my-plan.md",
+    })
   })
 
   test("#given absolute notepad path #when write executes #then rejects", async () => {
     const hook = createNotepadWriteGuardHook()
-    await expect(
-      invoke(hook, {
-        tool: "write",
-        filePath: "/home/user/project/.sisyphus/notepads/plan/decisions.md",
-      }),
-    ).rejects.toThrow(REFUSED_PREFIX)
+    await expectWriteBlocked(hook, "/home/user/project/.sisyphus/notepads/plan/decisions.md")
   })
 
   test("#given error message #when rejected #then message names the file and gives guidance", async () => {

src/hooks/notepad-write-guard/index.ts

@@ -1,11 +1,20 @@
 import type { Hooks } from "@opencode-ai/plugin"
-import { normalize } from "path"
+import { normalize, sep } from "path"
 
-const NOTEPAD_SEGMENT = `${normalize(".sisyphus/notepads")}/`
+const NOTEPAD_ROOTS = [
+  normalize(".sisyphus/notepads"),
+  normalize(".omo/notepads"),
+] as const
 
-function isNotebookPath(filePath: string): boolean {
-  const normalised = normalize(filePath)
-  return normalised.includes(`/.sisyphus/notepads/`) || normalised.startsWith(NOTEPAD_SEGMENT)
+function hasNotepadRoot(normalizedPath: string, notepadRoot: string): boolean {
+  return normalizedPath === notepadRoot
+    || normalizedPath.startsWith(`${notepadRoot}${sep}`)
+    || normalizedPath.includes(`${sep}${notepadRoot}${sep}`)
+}
+
+function isNotepadPath(filePath: string): boolean {
+  const normalizedPath = normalize(filePath)
+  return NOTEPAD_ROOTS.some((notepadRoot) => hasNotepadRoot(normalizedPath, notepadRoot))
 }
 
 function resolveFilePath(args: unknown): string | undefined {
@@ -27,7 +36,7 @@ export function createNotepadWriteGuardHook(): Hooks {
       const filePath = resolveFilePath(outputRecord?.args)
       if (!filePath) return
 
-      if (isNotebookPath(filePath)) {
+      if (isNotepadPath(filePath)) {
         throw new Error(
           `Refused: Write to ${filePath} is blocked because notepad files are append-only and Write would destroy history. Report the original Edit failure to the user and ask for guidance instead.`,
         )

src/hooks/start-work/session-plan-affinity.test.ts

@@ -0,0 +1,40 @@
+/// <reference types="bun-types" />
+
+import { describe, expect, test } from "bun:test"
+import { join } from "node:path"
+import { tmpdir } from "node:os"
+import { findRecentSessionPlanPath } from "./session-plan-affinity"
+import { unsafeTestValue } from "../../../test-support/unsafe-test-value"
+
+type FindRecentSessionPlanPathInput = Parameters<typeof findRecentSessionPlanPath>[0]
+
+describe("findRecentSessionPlanPath", () => {
+  test("#given session history references omo plan path #when finding recent plan #then returns matching plan", async () => {
+    const directory = join(tmpdir(), "session-plan-affinity-test")
+    const planPath = join(directory, ".omo", "plans", "foo-bar.md")
+    const client = unsafeTestValue<FindRecentSessionPlanPathInput["client"]>({
+      session: {
+        messages: async () => ({
+          data: [
+            {
+              parts: [
+                {
+                  text: "Plan saved to .omo/plans/foo-bar.md",
+                },
+              ],
+            },
+          ],
+        }),
+      },
+    })
+
+    const result = await findRecentSessionPlanPath({
+      client,
+      directory,
+      sessionID: "session-123",
+      availablePlans: [planPath],
+    })
+
+    expect(result).toBe(planPath)
+  })
+})

src/hooks/start-work/session-plan-affinity.ts

@@ -3,7 +3,7 @@ import type { PluginInput } from "@opencode-ai/plugin"
 import { normalizeSDKResponse } from "../../shared"
 import { log } from "../../shared/logger"
 
-const PLAN_PATH_PATTERN = /[A-Za-z0-9_./\\:-]*\.sisyphus[\\/]plans[\\/][A-Za-z0-9._/\\-]+\.md/gi
+const PLAN_PATH_PATTERN = /[A-Za-z0-9_./\\:-]*\.(?:sisyphus|omo)[\\/]plans[\\/][A-Za-z0-9._/\\-]+\.md/gi
 
 interface SessionMessagePart {
   text?: string

src/plugin/tool-execute-before-notepad-guard.test.ts

@@ -0,0 +1,75 @@
+import { describe, expect, test } from "bun:test"
+
+import { createNotepadWriteGuardHook } from "../hooks/notepad-write-guard"
+import { unsafeTestValue } from "../../test-support/unsafe-test-value"
+import { createToolExecuteBeforeHandler } from "./tool-execute-before"
+import type { CreatedHooks } from "../create-hooks"
+import type { PluginContext } from "./types"
+
+const REFUSED_PREFIX = "Refused: Write to"
+
+function createContext(): PluginContext {
+  return unsafeTestValue<PluginContext>({
+    client: {
+      session: {
+        messages: async () => ({ data: [] }),
+      },
+    },
+  })
+}
+
+function createHooks(): CreatedHooks {
+  return unsafeTestValue<CreatedHooks>({
+    notepadWriteGuard: createNotepadWriteGuardHook(),
+  })
+}
+
+async function runTool(args: { readonly tool: string; readonly filePath: string }): Promise<void> {
+  const handler = createToolExecuteBeforeHandler({
+    ctx: createContext(),
+    hooks: createHooks(),
+  })
+
+  await handler(
+    { tool: args.tool, sessionID: "ses_notepad", callID: "call_notepad" },
+    { args: { file_path: args.filePath } },
+  )
+}
+
+async function expectBlocked(args: { readonly tool: string; readonly filePath: string }): Promise<void> {
+  let caughtMessage = ""
+  try {
+    await runTool(args)
+  } catch (error) {
+    if (error instanceof Error) {
+      caughtMessage = error.message
+    } else {
+      throw error
+    }
+  }
+
+  expect(caughtMessage).toContain(REFUSED_PREFIX)
+}
+
+describe("tool.execute.before notepad-write-guard dispatch", () => {
+  test("#given guard enabled #when Write targets current .omo notepad #then blocks", async () => {
+    await expectBlocked({
+      tool: "Write",
+      filePath: ".omo/notepads/plan.md",
+    })
+  })
+
+  test("#given guard enabled #when Write targets other .omo path #then allows", async () => {
+    await runTool({
+      tool: "Write",
+      filePath: ".omo/somewhere-else.md",
+    })
+  })
+
+  test("#given guard enabled #when Edit targets current .omo notepad #then allows", async () => {
+    await runTool({
+      tool: "Edit",
+      filePath: ".omo/notepads/plan.md",
+    })
+  })
+})

src/plugin/tool-execute-before.ts

@@ -76,6 +76,7 @@ export function createToolExecuteBeforeHandler(args: {
     }
 
     await hooks.writeExistingFileGuard?.["tool.execute.before"]?.(input, output)
+    await hooks.notepadWriteGuard?.["tool.execute.before"]?.(input, output)
     await hooks.questionLabelTruncator?.["tool.execute.before"]?.(input, output)
     await hooks.claudeCodeHooks?.["tool.execute.before"]?.(input, output)
     await hooks.nonInteractiveEnv?.["tool.execute.before"]?.(input, output)