chore(docs): regenerate AGENTS.md knowledge base (#1118)

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
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justsisyphus
2026-01-26 11:48:30 +09:00
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# HOOKS KNOWLEDGE BASE
## OVERVIEW
31 lifecycle hooks intercepting/modifying agent behavior. Events: PreToolUse, PostToolUse, UserPromptSubmit, Stop, onSummarize.
32 lifecycle hooks intercepting/modifying agent behavior. Events: PreToolUse, PostToolUse, UserPromptSubmit, Stop, onSummarize.
## STRUCTURE
```
hooks/
├── atlas/ # Main orchestration (773 lines)
├── anthropic-context-window-limit-recovery/ # Auto-summarize
├── todo-continuation-enforcer.ts # Force TODO completion (489 lines)
├── atlas/ # Main orchestration (752 lines)
├── anthropic-context-window-limit-recovery/ # Auto-summarize
├── todo-continuation-enforcer.ts # Force TODO completion
├── ralph-loop/ # Self-referential dev loop
├── claude-code-hooks/ # settings.json compat layer - see AGENTS.md
├── comment-checker/ # Prevents AI slop
@@ -35,45 +33,63 @@ hooks/
├── non-interactive-env/ # Non-TTY environment handling
├── start-work/ # Sisyphus work session starter
├── task-resume-info/ # Resume info for cancelled tasks
├── question-label-truncator/ # Auto-truncates question labels >30 chars
├── question-label-truncator/ # Auto-truncates question labels
├── category-skill-reminder/ # Reminds of category skills
├── empty-task-response-detector.ts # Detects empty responses
├── sisyphus-junior-notepad/ # Sisyphus Junior notepad
└── index.ts # Hook aggregation + registration
```
## HOOK EVENTS
| Event | Timing | Can Block | Use Case |
|-------|--------|-----------|----------|
| PreToolUse | Before tool | Yes | Validate/modify inputs |
| PostToolUse | After tool | No | Append warnings, truncate |
| UserPromptSubmit | On prompt | Yes | Keyword detection |
| Stop | Session idle | No | Auto-continue |
| onSummarize | Compaction | No | Preserve state |
| UserPromptSubmit | `chat.message` | Yes | Keyword detection, slash commands |
| PreToolUse | `tool.execute.before` | Yes | Validate/modify inputs, inject context |
| PostToolUse | `tool.execute.after` | No | Truncate output, error recovery |
| Stop | `event` (session.stop) | No | Auto-continue, notifications |
| onSummarize | Compaction | No | Preserve state, inject summary context |
## EXECUTION ORDER
- **UserPromptSubmit**: keywordDetector → claudeCodeHooks → autoSlashCommand → startWork
- **PreToolUse**: questionLabelTruncator → claudeCodeHooks → nonInteractiveEnv → commentChecker → directoryAgentsInjector → directoryReadmeInjector → rulesInjector → prometheusMdOnly → sisyphusJuniorNotepad → atlasHook
- **PostToolUse**: claudeCodeHooks → toolOutputTruncator → contextWindowMonitor → commentChecker → directoryAgentsInjector → directoryReadmeInjector → rulesInjector → emptyTaskResponseDetector → agentUsageReminder → interactiveBashSession → editErrorRecovery → delegateTaskRetry → atlasHook → taskResumeInfo
**chat.message**: keywordDetector → claudeCodeHooks → autoSlashCommand → startWork → ralphLoop
## CRITICAL DEPENDENCIES
**tool.execute.before**: claudeCodeHooks → nonInteractiveEnv → commentChecker → directoryAgentsInjector → rulesInjector
**tool.execute.after**: editErrorRecovery → delegateTaskRetry → commentChecker → toolOutputTruncator → claudeCodeHooks
| Hook | Depends On | State Sharing |
|------|------------|---------------|
| todo-continuation-enforcer | session-recovery callbacks | `isRecovering` flag |
| atlas | backgroundManager | Running task checks |
| start-work | boulder state file | `.sisyphus/boulder.json` |
| directory-*-injector | per-session caches | `sessionCaches` Map |
## HOW TO ADD
1. Create `src/hooks/name/` with `index.ts` exporting `createMyHook(ctx)`
2. Add hook name to `HookNameSchema` in `src/config/schema.ts`
3. Register in `src/index.ts`:
```typescript
const myHook = isHookEnabled("my-hook") ? createMyHook(ctx) : null
```
3. Register in `src/index.ts` and add to relevant lifecycle methods
## PATTERNS
## HOOK PATTERNS
- **Session-scoped state**: `Map<sessionID, Set<string>>`
- **Conditional execution**: Check `input.tool` before processing
- **Output modification**: `output.output += "\n${REMINDER}"`
**Simple Single-Event**:
```typescript
export function createToolOutputTruncatorHook(ctx) {
return { "tool.execute.after": async (input, output) => { ... } }
}
```
**Multi-Event with State**:
```typescript
export function createThinkModeHook() {
const state = new Map<string, ThinkModeState>()
return {
"chat.params": async (output, sessionID) => { ... },
"event": async ({ event }) => { /* cleanup */ }
}
}
```
## ANTI-PATTERNS
- **Blocking non-critical**: Use PostToolUse warnings instead
- **Heavy computation**: Keep PreToolUse light
- **Redundant injection**: Track injected files
- **Heavy computation**: Keep PreToolUse light to avoid latency
- **Redundant injection**: Track injected files to avoid context bloat
- **Direct state mutation**: Use `output.output +=` instead of replacing