## Tasks

- [x] Create skill directory structure (`.pi/skills/goal-driven-loop/`)
- [x] Write `SKILL.md` (≤500 words, Agent Skills standard compliant)
- [x] Write `references/error-handling.md` (retry strategy, exception classification, stagnation rules, red flags)
- [x] Create extension directory (`.pi/extensions/goal-driven-loop/`)
- [x] Write `trigger-detector.ts` (trigger phrase matching + anti-trigger logic)
- [x] Write `state-injector.ts` (GOAL.md parsing + injection text generation)
- [x] Write `ui-prompts.ts` (timed auto-default confirms + notification helpers)
- [x] Write `index.ts` (event wiring: input, before_agent_start)
- [x] Add `package.json` for extension discovery
- [x] Fix code block anti-trigger (strip code blocks before pattern matching)
- [x] Fix quote block anti-trigger (only block if trigger exclusively in quotes)
- [x] Fix blocker parsing (strip markdown list prefix)
- [x] Add stagnation auto-recovery injection in extension
- [x] Add comet fallback when openspec unavailable
- [x] Replace `any` types with `ExtensionContext`
- [x] Unit tests: 27/27 trigger-detector, 17/17 state-injector
- [x] E2E tests: trigger, anti-trigger, abandon, stale state, state injection