docs: add module-level AGENTS.md for config-manager, keyword-detector, ralph-loop, session-recovery, todo-continuation-enforcer

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src/hooks/ralph-loop/AGENTS.md

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+# src/hooks/ralph-loop/ — Self-Referential Dev Loop
+
+**Generated:** 2026-02-19
+
+## OVERVIEW
+
+14 files (~1687 LOC). The `ralphLoop` Session Tier hook — powers the `/ralph-loop` command. Iterates a development loop until the agent emits `<promise>DONE</promise>` or max iterations reached.
+
+## LOOP LIFECYCLE
+
+```
+/ralph-loop → startLoop(sessionID, prompt, options)
+  → loopState.startLoop() → persists state to .sisyphus/ralph-loop.local.md
+  → session.idle events → createRalphLoopEventHandler()
+    → completionPromiseDetector: scan output for <promise>DONE</promise>
+    → if not done: inject continuation prompt → loop
+    → if done or maxIterations: cancelLoop()
+```
+
+## KEY FILES
+
+| File | Purpose |
+|------|---------|
+| `ralph-loop-hook.ts` | `createRalphLoopHook()` — composes controller + recovery + event handler |
+| `ralph-loop-event-handler.ts` | `createRalphLoopEventHandler()` — handles session.idle, drives loop |
+| `loop-state-controller.ts` | State CRUD: startLoop, cancelLoop, getState, persist to disk |
+| `loop-session-recovery.ts` | Recover from crashed/interrupted loop sessions |
+| `completion-promise-detector.ts` | Scan session transcript for `<promise>DONE</promise>` |
+| `continuation-prompt-builder.ts` | Build continuation message for next iteration |
+| `continuation-prompt-injector.ts` | Inject built prompt into active session |
+| `storage.ts` | Read/write `.sisyphus/ralph-loop.local.md` state file |
+| `message-storage-directory.ts` | Temp dir for prompt injection |
+| `with-timeout.ts` | API call wrapper with timeout (default 5000ms) |
+| `types.ts` | `RalphLoopState`, `RalphLoopOptions`, loop iteration types |
+
+## STATE FILE
+
+```
+.sisyphus/ralph-loop.local.md  (gitignored)
+  → sessionID, prompt, iteration count, maxIterations, completionPromise, ultrawork flag
+```
+
+## OPTIONS
+
+```typescript
+startLoop(sessionID, prompt, {
+  maxIterations?: number  // Default from config (default: 100)
+  completionPromise?: string  // Custom "done" signal (default: "<promise>DONE</promise>")
+  ultrawork?: boolean  // Enable ultrawork mode for iterations
+})
+```
+
+## EXPORTED INTERFACE
+
+```typescript
+interface RalphLoopHook {
+  event: (input) => Promise<void>  // session.idle handler
+  startLoop: (sessionID, prompt, options?) => boolean
+  cancelLoop: (sessionID) => boolean
+  getState: () => RalphLoopState | null
+}
+```