diff --git a/src/agents/AGENTS.md b/src/agents/AGENTS.md
index 3943b9fe9..f0a215bd8 100644
--- a/src/agents/AGENTS.md
+++ b/src/agents/AGENTS.md
@@ -73,7 +73,7 @@ agents/
├── metis.ts # Pre-planning
├── momus.ts # Plan review
├── atlas/agent.ts # Todo orchestrator
-├── prometheus/ # Strategic planner — system-prompt.ts, identity-constraints.ts, interview-mode.ts, plan-template.ts, gemini.ts, gpt.ts
+├── prometheus/ # Strategic planner thin loaders: system-prompt.ts, gemini.ts, gpt.ts; prompt content in packages/prompts-core/prompts/prometheus/
├── types.ts # BuiltinAgentName, AgentMode, AgentConfig
├── builtin-agents.ts # agentSources registry (10 → 11 with sisyphus-junior)
├── builtin-agents/ # maybeCreateXXXConfig conditional factories + general-agents.ts + available-skills.ts
diff --git a/src/agents/prometheus/AGENTS.md b/src/agents/prometheus/AGENTS.md
index 3eabbb0b8..ad40e95d6 100644
--- a/src/agents/prometheus/AGENTS.md
+++ b/src/agents/prometheus/AGENTS.md
@@ -1,30 +1,47 @@
---
name: prometheus-agent
-description: Developer reference for the Prometheus strategic planner agent — interview flow, plan output format, and key constraints.
+description: Developer reference for the Prometheus strategic planner agent prompt loaders, prompts-core markdown variants, and model routing.
---
# src/agents/prometheus/ -- Strategic Planner
-**Generated:** 2026-05-15
+**Generated:** 2026-05-24
## OVERVIEW
-11 files. Prometheus agent -- interview-mode strategic planner. Reads codebase, questions user, builds detailed work plan before any code is written. Markdown-only output (enforced by `prometheus-md-only` hook).
+5 TypeScript files plus 3 markdown prompt variants in [`packages/prompts-core/prompts/prometheus/`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/prometheus/). Prometheus remains the interview-mode strategic planner, but this directory is now a thin adapter layer. Prompt content lives in `packages/prompts-core`; `src/agents/prometheus/` only loads the right markdown variant and applies runtime tool gating.
+
+This shape follows the package layering refactor in [`ROADMAP.md`](file:///Users/yeongyu/local-workspaces/omo/ROADMAP.md): prompts are harness-neutral core assets, while the OpenCode adapter keeps only model routing and runtime integration.
## FILES
| File | Purpose |
|------|---------|
-| `system-prompt.ts` | Composes full system prompt from sections |
-| `identity-constraints.ts` | FORBIDDEN actions, .md-only enforcement, path restrictions |
-| `interview-mode.ts` | Interview flow: gather requirements, clarify scope |
-| `plan-generation.ts` | Plan output structure and validation |
-| `plan-template.ts` | YAML plan template with task graph, dependencies, waves |
-| `behavioral-summary.ts` | Behavioral guidelines section |
-| `high-accuracy-mode.ts` | Enhanced accuracy mode for complex plans |
-| `gemini.ts` | Gemini-optimized prompt variant |
-| `gpt.ts` | GPT-optimized prompt variant |
| `index.ts` | Barrel exports |
+| `system-prompt.ts` | Thin loader using `loadPromptSync()` and `prometheusPromptVariants` from `@oh-my-opencode/prompts-core`; exports prompt source routing and disabled-tool filtering |
+| `gpt.ts` | Thin loader for `PROMETHEUS_GPT_SYSTEM_PROMPT` from `packages/prompts-core/prompts/prometheus/gpt.md` |
+| `gemini.ts` | Thin loader for `PROMETHEUS_GEMINI_SYSTEM_PROMPT` from `packages/prompts-core/prompts/prometheus/gemini.md` |
+| `system-prompt.test.ts` | Runtime behavior tests for Question tool filtering |
+| `prometheus-byte-exactness.test.ts` | Byte-exact sha256 characterization tests for all variants and Question disabled state |
+| `packages/prompts-core/prompts/prometheus/default.md` | Default/Claude markdown prompt variant |
+| `packages/prompts-core/prompts/prometheus/gpt.md` | GPT-optimized markdown prompt variant |
+| `packages/prompts-core/prompts/prometheus/gemini.md` | Gemini-optimized markdown prompt variant |
+
+## MODEL VARIANT ROUTING
+
+[`system-prompt.ts`](file:///Users/yeongyu/local-workspaces/omo/src/agents/prometheus/system-prompt.ts) exposes `getPrometheusPromptSource(model)`:
+
+- GPT family models, as detected by `isGptModel(model)`, route to `"gpt"`.
+- Gemini family models, as detected by `isGeminiModel(model)`, route to `"gemini"`.
+- Missing models and all other families route to `"default"`.
+
+`getPrometheusPrompt(model, disabledTools)` then loads the selected markdown through `loadPromptSync({ source: prometheusPromptVariants[variant], name: "prometheus", variant })` and returns the loaded body.
+
+## DISABLED TOOL HANDLING
+
+Prometheus normally includes `Question({ ... })` examples because interview mode uses the Question tool to clarify scope. When the runtime passes `disabledTools` containing `"question"`, `getPrometheusPrompt()` strips fenced TypeScript `Question({ ... })` examples with `QUESTION_TOOL_BLOCK_RE` before returning the prompt.
+
+This filtering is runtime adapter behavior. Do not duplicate stripped markdown variants in `packages/prompts-core`; keep one source of truth per model family and let `system-prompt.ts` remove Question examples only when the tool is disabled.
## KEY CONSTRAINTS
@@ -33,10 +50,12 @@ description: Developer reference for the Prometheus strategic planner agent —
- Must explore codebase before planning (NEVER plan blind)
- Plans saved to `.omo/plans/`
- Acceptance criteria requiring "user manually tests" are FORBIDDEN
+- Prompt edits belong in [`packages/prompts-core/prompts/prometheus/`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/prometheus/), not in TypeScript section files
## PLAN OUTPUT FORMAT
-Plans use YAML with parallel task graph:
+The markdown variants instruct Prometheus to produce YAML plans with a parallel task graph:
+
- Waves (parallel execution groups)
- Tasks with dependencies, category, skills
- Each task has atomic scope + verification criteria
diff --git a/src/agents/prometheus/prometheus-byte-exactness.test.ts b/src/agents/prometheus/prometheus-byte-exactness.test.ts
new file mode 100644
index 000000000..882c33e63
--- /dev/null
+++ b/src/agents/prometheus/prometheus-byte-exactness.test.ts
@@ -0,0 +1,81 @@
+///
+
+import { describe, expect, test } from "bun:test"
+import { createHash } from "node:crypto"
+import { getPrometheusPrompt } from "./system-prompt"
+
+type PrometheusPromptBaseline = {
+ readonly name: string
+ readonly model: string | undefined
+ readonly disabledTools: readonly string[]
+ readonly sha256: string
+ readonly shouldContainQuestionTool: boolean
+}
+
+const PROMETHEUS_PROMPT_BASELINES: readonly PrometheusPromptBaseline[] = [
+ {
+ name: "default-enabled",
+ model: undefined,
+ disabledTools: [],
+ sha256: "7cd6dcc764c4b6c7cca61cf3878a1a2b2fb91836b38cbd0ed348d3e778cea4d9",
+ shouldContainQuestionTool: true,
+ },
+ {
+ name: "default-question-disabled",
+ model: undefined,
+ disabledTools: ["question"],
+ sha256: "db181638b60c222e5238daa8c090b8b908235d4a1cef7ff760839d4200195f59",
+ shouldContainQuestionTool: false,
+ },
+ {
+ name: "gpt-enabled",
+ model: "gpt-5.5",
+ disabledTools: [],
+ sha256: "95e42fb8112a6aac3d702fa40ec4a8f89923acd239e1041646ed5a0fd2a9feb9",
+ shouldContainQuestionTool: true,
+ },
+ {
+ name: "gpt-question-disabled",
+ model: "gpt-5.5",
+ disabledTools: ["question"],
+ sha256: "8792637920d271caec5675e63ed6685b1e5e6e292824fd6cf3f9a699e83a42fe",
+ shouldContainQuestionTool: false,
+ },
+ {
+ name: "gemini-enabled",
+ model: "gemini-3.1-pro",
+ disabledTools: [],
+ sha256: "df846993f69aef852bfe14569231453c673d369d69229f6e67f5af0915c05a1d",
+ shouldContainQuestionTool: true,
+ },
+ {
+ name: "gemini-question-disabled",
+ model: "gemini-3.1-pro",
+ disabledTools: ["question"],
+ sha256: "f9f9b7498c681a7d98a388a2e2aaf875227a145b4f824277ef54ed3a8d80106b",
+ shouldContainQuestionTool: false,
+ },
+]
+
+describe("Prometheus prompt byte exactness", () => {
+ test("#given captured Prometheus prompt baselines #then every variant keeps the same bytes", () => {
+ for (const baseline of PROMETHEUS_PROMPT_BASELINES) {
+ const prompt = getPrometheusPrompt(baseline.model, baseline.disabledTools)
+
+ expect(prompt.length, baseline.name).toBeGreaterThan(0)
+ expect(hashPrompt(prompt), baseline.name).toBe(baseline.sha256)
+ }
+ })
+
+ test("#given Question tool availability changes #then Question examples follow disabledTools", () => {
+ for (const baseline of PROMETHEUS_PROMPT_BASELINES) {
+ const prompt = getPrometheusPrompt(baseline.model, baseline.disabledTools)
+
+ expect(prompt.includes("Question({"), baseline.name).toBe(baseline.shouldContainQuestionTool)
+ }
+ })
+})
+
+function hashPrompt(prompt: string): string {
+ return createHash("sha256").update(prompt).digest("hex")
+}
diff --git a/src/hooks/keyword-detector/AGENTS.md b/src/hooks/keyword-detector/AGENTS.md
index ed2fee805..6ddd69c98 100644
--- a/src/hooks/keyword-detector/AGENTS.md
+++ b/src/hooks/keyword-detector/AGENTS.md
@@ -1,55 +1,91 @@
-# src/hooks/keyword-detector/ — Mode Keyword Injection
+# src/hooks/keyword-detector/ -- Mode Keyword Injection
-**Generated:** 2026-05-15
+**Generated:** 2026-05-24
## OVERVIEW
-Transform Tier hook on `messages.transform`. Scans first user message for mode keywords (ultrawork, search, analyze, team) and injects mode-specific system prompts.
+Transform Tier hook on `messages.transform`. Scans the first user message for mode keywords and injects mode-specific system prompts. The detector and routing logic stay in `src/hooks/keyword-detector/`; prompt bodies now live in [`packages/prompts-core/prompts/`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/) so they can be shared by future harness adapters.
+
+This matches the package layering direction in [`ROADMAP.md`](file:///Users/yeongyu/local-workspaces/omo/ROADMAP.md): `packages/prompts-core` owns static prompt content, while this OpenCode hook owns keyword detection, model routing, and message injection.
## KEYWORDS
| Keyword | Pattern | Effect |
|---------|---------|--------|
-| `ultrawork` / `ulw` | `/\b(ultrawork|ulw)\b/i` | Full orchestration mode — parallel agents, deep exploration, relentless execution |
+| `ultrawork` / `ulw` | `/\b(ultrawork|ulw)\b/i` | Full orchestration mode: parallel agents, deep exploration, relentless execution |
| Search mode | `SEARCH_PATTERN` (from `search/`) | Web/doc search focus prompt injection |
| Analyze mode | `ANALYZE_PATTERN` (from `analyze/`) | Deep analysis mode prompt injection |
| Team mode | `TEAM_PATTERN` (from `team/`) | Forces orchestration via `team_*` tools when user invokes `team mode` / `team-mode` / `team_mode` / `teammode`; instructs user to enable `team_mode.enabled` if tools are absent and reminds lead to run the closure sequence once every task is terminal |
+| Hyperplan mode | `HYPERPLAN_PATTERN` (from `hyperplan/`) | Loads the `hyperplan` skill and injects adversarial planning mode guidance |
+| Hyperplan-ultrawork combo | `HYPERPLAN_ULTRAWORK_PATTERN` (from `constants.ts`) | Prepends the combo banner, requires the `hyperplan` skill, then appends the routed ultrawork message |
## STRUCTURE
```
keyword-detector/
├── index.ts # Barrel export
-├── hook.ts # createKeywordDetectorHook() — chat.message handler
+├── hook.ts # createKeywordDetectorHook() chat.message handler
├── detector.ts # detectKeywordsWithType() + extractPromptText()
├── constants.ts # KEYWORD_DETECTORS array, re-exports from submodules
├── types.ts # KeywordDetector, DetectedKeyword types
├── ultrawork/
-│ ├── index.ts
-│ ├── message.ts # getUltraworkMessage() — dynamic prompt by agent/model
-│ └── isPlannerAgent.ts
+│ ├── index.ts # getUltraworkMessage() router
+│ ├── source-detector.ts # agent/model routing helpers
+│ ├── default.ts # thin loader for prompts-core/prompts/ultrawork/default.md
+│ ├── gpt.ts # thin loader for prompts-core/prompts/ultrawork/gpt.md
+│ ├── gemini.ts # thin loader for prompts-core/prompts/ultrawork/gemini.md
+│ └── planner.ts # thin loader for prompts-core/prompts/ultrawork/planner.md
├── search/
│ ├── index.ts
-│ ├── pattern.ts # SEARCH_PATTERN regex
-│ └── message.ts # SEARCH_MESSAGE
+│ └── default.ts # SEARCH_PATTERN + SEARCH_MESSAGE from prompts-core mode prompt
├── analyze/
│ ├── index.ts
-│ └── default.ts # ANALYZE_PATTERN + ANALYZE_MESSAGE
-└── team/
+│ └── default.ts # ANALYZE_PATTERN + ANALYZE_MESSAGE from prompts-core mode prompt
+├── team/
+│ ├── index.ts
+│ └── default.ts # TEAM_PATTERN + TEAM_MESSAGE from prompts-core mode prompt
+└── hyperplan/
├── index.ts
- └── default.ts # TEAM_PATTERN + TEAM_MESSAGE
+ └── default.ts # HYPERPLAN_PATTERN + HYPERPLAN_MESSAGE from prompts-core mode prompt
```
+## PROMPT CONTENT LOCATIONS
+
+| Prompt family | Markdown source |
+|---------------|-----------------|
+| Ultrawork default | [`packages/prompts-core/prompts/ultrawork/default.md`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/ultrawork/default.md) |
+| Ultrawork GPT | [`packages/prompts-core/prompts/ultrawork/gpt.md`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/ultrawork/gpt.md) |
+| Ultrawork Gemini | [`packages/prompts-core/prompts/ultrawork/gemini.md`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/ultrawork/gemini.md) |
+| Ultrawork planner | [`packages/prompts-core/prompts/ultrawork/planner.md`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/ultrawork/planner.md) |
+| Search mode | [`packages/prompts-core/prompts/mode/search.md`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/mode/search.md) |
+| Analyze mode | [`packages/prompts-core/prompts/mode/analyze.md`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/mode/analyze.md) |
+| Team mode | [`packages/prompts-core/prompts/mode/team.md`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/mode/team.md) |
+| Hyperplan mode | [`packages/prompts-core/prompts/mode/hyperplan.md`](file:///Users/yeongyu/local-workspaces/omo/packages/prompts-core/prompts/mode/hyperplan.md) |
+
+The `src/hooks/keyword-detector/{search,analyze,team,hyperplan}/default.ts` files keep the regex triggers in the hook layer and import the markdown-backed constants from `@oh-my-opencode/prompts-core`. The ultrawork files import markdown with Bun's `.md` text loader so the exact prompt bytes are bundled into `dist/index.js`.
+
+## ULTRAWORK VARIANT ROUTING
+
+[`ultrawork/source-detector.ts`](file:///Users/yeongyu/local-workspaces/omo/src/hooks/keyword-detector/ultrawork/source-detector.ts) decides the ultrawork source in priority order:
+
+1. Planner agents (`prometheus`, `planner`, or normalized `plan`) route to `planner.md`.
+2. GPT family models, as detected by `isGptModel(modelID)`, route to `gpt.md`.
+3. Gemini family models, as detected by `isGeminiModel(modelID)`, route to `gemini.md`.
+4. Everything else routes to `default.md`.
+
+[`ultrawork/index.ts`](file:///Users/yeongyu/local-workspaces/omo/src/hooks/keyword-detector/ultrawork/index.ts) exposes `getUltraworkMessage(agentName, modelID)`, switches on that source, and returns the loaded markdown body.
+
## DETECTION LOGIC
```
chat.message (user input)
- → extractPromptText(parts)
- → isSystemDirective? → skip
- → removeSystemReminders(text) # strip blocks
- → detectKeywordsWithType(cleanText, agentName, modelID, disabledKeywords)
- → isPlannerAgent(agentName)? → filter out ultrawork
- → for each detected keyword: inject mode message into output
+ -> extractPromptText(parts)
+ -> isSystemDirective? skip
+ -> removeSystemReminders(text) # strip blocks
+ -> detectKeywordsWithType(cleanText, agentName, modelID, disabledKeywords)
+ -> isNonOmoAgent(agentName)? filter keyword injection
+ -> isPlannerAgent(agentName)? filter standalone ultrawork
+ -> for each detected keyword: inject mode message into output
```
## CONFIG
@@ -57,17 +93,20 @@ chat.message (user input)
```jsonc
{
"keyword_detector": {
- // Skip injection for any keyword in this list. Allowed: "ultrawork", "search", "analyze", "team".
+ // Skip injection for any keyword in this list.
+ // Allowed: "ultrawork", "search", "analyze", "team", "hyperplan", "hyperplan-ultrawork".
"disabled_keywords": ["search", "analyze"]
}
}
```
-Default: empty/missing → all four detectors active. Schema lives at [src/config/schema/keyword-detector.ts](../../config/schema/keyword-detector.ts).
+Default: empty/missing means every detector is active. Schema lives at [`src/config/schema/keyword-detector.ts`](file:///Users/yeongyu/local-workspaces/omo/src/config/schema/keyword-detector.ts).
## GUARDS
- **System directive skip**: Messages tagged as system directives are not scanned (prevents infinite loops)
- **Planner agent filter**: Prometheus/plan agents do not receive `ultrawork` injection
+- **Non-OMO agent filter**: OpenCode built-in Builder/Plan agents do not receive keyword injection
- **Session agent tracking**: Uses `getSessionAgent()` to get actual agent (not just input hint)
- **Model-aware messages**: `getUltraworkMessage(agentName, modelID)` adapts message to active model
+- **Prompt byte baselines**: `mode-prompt-baseline.test.ts` pins mode prompt hashes; `ultrawork/ultrawork-byte-exactness.test.ts` pins ultrawork prompt hashes
diff --git a/src/hooks/keyword-detector/ultrawork/ultrawork-byte-exactness.test.ts b/src/hooks/keyword-detector/ultrawork/ultrawork-byte-exactness.test.ts
new file mode 100644
index 000000000..f5fe2dd92
--- /dev/null
+++ b/src/hooks/keyword-detector/ultrawork/ultrawork-byte-exactness.test.ts
@@ -0,0 +1,62 @@
+///
+
+import { describe, expect, test } from "bun:test"
+import { createHash } from "node:crypto"
+import { getUltraworkMessage, getUltraworkSource } from "./index"
+import type { UltraworkSource } from "./source-detector"
+
+type UltraworkPromptBaseline = {
+ readonly name: string
+ readonly agentName: string
+ readonly modelID: string
+ readonly expectedSource: UltraworkSource
+ readonly sha256: string
+}
+
+const ULTRAWORK_PROMPT_BASELINES: readonly UltraworkPromptBaseline[] = [
+ {
+ name: "default",
+ agentName: "sisyphus",
+ modelID: "claude-sonnet-4-6",
+ expectedSource: "default",
+ sha256: "78aa43e2e2b7db307827d9ddda30a4c6a24aa35a9255efe1ee39a4476d71acca",
+ },
+ {
+ name: "gpt",
+ agentName: "sisyphus",
+ modelID: "gpt-5.5",
+ expectedSource: "gpt",
+ sha256: "8f31f0053256914e94605944b28e123c584a0ad093e0d44d5ad66da009a632ae",
+ },
+ {
+ name: "gemini",
+ agentName: "sisyphus",
+ modelID: "gemini-3.1-pro",
+ expectedSource: "gemini",
+ sha256: "5c5766549e868e7a1c87252e742e491b7015138948c6e26fb704346bb55d5d7c",
+ },
+ {
+ name: "planner",
+ agentName: "prometheus",
+ modelID: "gpt-5.5",
+ expectedSource: "planner",
+ sha256: "8897b3a11b61c12a02bfba13a76c80742bc4e5356cfc30e2f0c38464aa587bf3",
+ },
+]
+
+describe("Ultrawork prompt byte exactness", () => {
+ test("#given captured ultrawork prompt baselines #then every routed source keeps the same bytes", () => {
+ for (const baseline of ULTRAWORK_PROMPT_BASELINES) {
+ const source = getUltraworkSource(baseline.agentName, baseline.modelID)
+ const prompt = getUltraworkMessage(baseline.agentName, baseline.modelID)
+
+ expect(source, baseline.name).toBe(baseline.expectedSource)
+ expect(prompt.length, baseline.name).toBeGreaterThan(0)
+ expect(hashPrompt(prompt), baseline.name).toBe(baseline.sha256)
+ }
+ })
+})
+
+function hashPrompt(prompt: string): string {
+ return createHash("sha256").update(prompt).digest("hex")
+}