chore: comet archive goal-driven-loop change
Comet lifecycle complete: open → design → build → verify → archive All 44 unit tests passing, 16 E2E tests passing.
This commit is contained in:
张宗平
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{
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"change": "goal-driven-loop",
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"phase": "design",
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"mode": "compact",
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"canonical_spec": "openspec",
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"generated_by": "comet-handoff.sh",
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"context_hash": "5c51d4f35f110e68c474f79b7d0839423c1efcb5136485917d2c70fff7e515f7",
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"files": [
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{ "path": "openspec/changes/goal-driven-loop/proposal.md", "sha256": "4a0c87e85ab5b7b5aeeeccd429430a0e06e9fc158a4e8b65ec9e460ada48d908" },
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{ "path": "openspec/changes/goal-driven-loop/design.md", "sha256": "8bb842618779ee28eabdc781950c15c8ddeb477598022c9e0619e40f9370e035" },
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{ "path": "openspec/changes/goal-driven-loop/tasks.md", "sha256": "c19183865d2d41dccde557a933fc8d3043a6f875d3d8a8419926111897b7f687" }
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]
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}
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# Comet Design Handoff
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- Change: goal-driven-loop
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- Phase: design
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- Mode: compact
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- Context hash: 5c51d4f35f110e68c474f79b7d0839423c1efcb5136485917d2c70fff7e515f7
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Generated-by: comet-handoff.sh
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OpenSpec remains the canonical capability spec. This handoff is a deterministic, source-traceable context pack, not an agent-authored summary.
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## openspec/changes/goal-driven-loop/proposal.md
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- Source: openspec/changes/goal-driven-loop/proposal.md
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- Lines: 1-28
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- SHA256: 4a0c87e85ab5b7b5aeeeccd429430a0e06e9fc158a4e8b65ec9e460ada48d908
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```md
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## Why
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Long-running coding sessions drift. The user states a goal, the agent works on it, gets sidetracked, and loses sight of the original target. When context compaction occurs, the goal may be forgotten entirely. Pure skill-only designs force user interaction at every checkpoint, which breaks the "set and forget" intent.
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## What Changes
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- Add a Pi skill `goal-driven-loop` that detects goal-setting phrases (Chinese, English, other languages), persists goal + acceptance criteria to `.agents/goal/GOAL.md`, and runs an instruction-based loop iterating until all criteria pass or genuine stagnation is detected
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- Add a Pi extension `goal-driven-loop` that automates trigger detection, state injection on every agent turn (resists context compaction), context tension detection via `ctx.getContextUsage()`, timed auto-default confirms (eliminates user-interaction hang-ups), and automatic delegation to comet for coarse-grained goals
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- Auto-generate verifiable acceptance criteria when not provided by the user
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- Per-iteration exponential backoff retry (10 retries, ~37min coverage) for transient failures
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- Dual-signal stagnation detection with auto-recovery injection before user notification
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- Deslop pass and clean exit on completion
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## Capabilities
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### New Capabilities
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- `goal-driven-loop`: Goal persistence and iteration loop with acceptance criteria verification, trigger/anti-trigger detection, state injection, and automatic retry/recovery
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### Modified Capabilities
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<!-- No existing capabilities modified -->
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## Impact
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- New files: `.pi/skills/goal-driven-loop/` (skill instructions + error-handling reference), `.pi/extensions/goal-driven-loop/` (4 TypeScript modules + package.json)
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- Runtime: Extension subscribes to `input` and `before_agent_start` events
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- State: `.agents/goal/GOAL.md` created per-project during active goals, deleted on completion
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- Dependencies: Pi Extension API (`@earendil-works/pi-coding-agent`), node:fs, node:path
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- Integration: Delegates to `comet-open` for coarse-grained goals; no changes to comet itself
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```
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## openspec/changes/goal-driven-loop/design.md
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- Source: openspec/changes/goal-driven-loop/design.md
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- Lines: 1-48
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- SHA256: 8bb842618779ee28eabdc781950c15c8ddeb477598022c9e0619e40f9370e035
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```md
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## Context
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Pi coding agent has no built-in mechanism for persisting a user-defined goal across a session. Skills can provide instructions, but cannot subscribe to events or inject state automatically. Extensions can, but have no declarative goal-tracking format. This change combines both layers.
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## Goals / Non-Goals
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**Goals:**
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- Detect goal-setting phrases in user messages across languages
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- Persist goal state to a file that survives context compaction
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- Automatically inject goal context on every agent turn
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- Eliminate unnecessary user interaction (timed auto-defaults, auto-retry, auto-recovery)
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- Delegate coarse-grained goals to comet automatically
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- Verify completion against explicit acceptance criteria before declaring done
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**Non-Goals:**
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- Multi-goal concurrent tracking (only one active goal at a time)
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- Cross-session goal tracking beyond file persistence
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- Subagent orchestration (agent uses existing Pi tools)
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- Comet skill modifications
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## Decisions
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1. **Two-layer architecture (skill + extension)**: Skill provides instructions the agent reads; extension provides mechanical automation. This separates judgment (criteria quality, iteration work) from mechanics (trigger detection, state injection, timed confirms).
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2. **File-based state (`.agents/goal/GOAL.md`)**: Markdown with YAML frontmatter. Survives context compaction. Human-readable and editable. Deleted on completion.
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3. **Extension-driven state injection via `before_agent_start`**: Every agent turn re-injects goal context from the file. This is the primary mechanism for context-compaction resistance — even if conversation is compacted, the extension rebuilds goal context.
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4. **Timed auto-default confirms (10s timeout)**: Stale state resolution, criteria confirmation, and other checkpoints use `ctx.ui.select({ timeout: 10000 })` with safe defaults. User can intervene but doesn't have to.
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5. **Per-iteration exponential backoff (10 retries, ~37min)**: Tool failures and LLM API errors retry automatically. Counter resets per-iteration. After 10 retries, status becomes `blocked` and extension injects strategy-change prompt.
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6. **Dual-signal stagnation detection**: Criteria passing count unchanged for 3 iterations AND no progress keywords in Progress Log. Both required. Extension auto-injects recovery prompt twice before notifying user.
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7. **Granularity split with comet delegation**: Coarse-grained goals (file count > 5, multi-module, architectural) automatically invoke `comet-open`. Fallback to multi-stage mode if comet unavailable.
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8. **Anti-trigger rules are mechanical**: Quote blocks, code blocks, reported speech, trivial-task keywords, and short descriptions without architectural keywords — all checked programmatically in the extension, not subjectively by the agent.
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## Risks / Trade-offs
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| Risk | Mitigation |
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|------|------------|
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| Agent rationalizes skipping criteria | Red flags list in error-handling reference; criteria modification requires logged reason |
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| Sleep timeout in Pi bash tool | `timeout = delay + 30` parameter |
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| Extension bugs block the loop | Extension failures degrade gracefully — skill instructions still work without extension |
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| User loses ability to intervene | Explicit abandon and material criteria change still user-controllable |
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| Context tension detection imprecise | `ctx.getContextUsage() > 0.8` threshold with auto-save directive |
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| Mid-loop granularity upgrade needs skill-side signal | Skill can set `status: needs-upgrade` in GOAL.md; extension reads it on next turn |
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```
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## openspec/changes/goal-driven-loop/tasks.md
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- Source: openspec/changes/goal-driven-loop/tasks.md
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- Lines: 1-19
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- SHA256: c19183865d2d41dccde557a933fc8d3043a6f875d3d8a8419926111897b7f687
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```md
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## Tasks
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- [x] Create skill directory structure (`.pi/skills/goal-driven-loop/`)
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- [x] Write `SKILL.md` (≤500 words, Agent Skills standard compliant)
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- [x] Write `references/error-handling.md` (retry strategy, exception classification, stagnation rules, red flags)
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- [x] Create extension directory (`.pi/extensions/goal-driven-loop/`)
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- [x] Write `trigger-detector.ts` (trigger phrase matching + anti-trigger logic)
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- [x] Write `state-injector.ts` (GOAL.md parsing + injection text generation)
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- [x] Write `ui-prompts.ts` (timed auto-default confirms + notification helpers)
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- [x] Write `index.ts` (event wiring: input, before_agent_start)
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- [x] Add `package.json` for extension discovery
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- [x] Fix code block anti-trigger (strip code blocks before pattern matching)
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- [x] Fix quote block anti-trigger (only block if trigger exclusively in quotes)
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- [x] Fix blocker parsing (strip markdown list prefix)
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- [x] Add stagnation auto-recovery injection in extension
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- [x] Add comet fallback when openspec unavailable
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- [x] Replace `any` types with `ExtensionContext`
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- [x] Unit tests: 27/27 trigger-detector, 17/17 state-injector
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- [x] E2E tests: trigger, anti-trigger, abandon, stale state, state injection
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```
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# Verification Report: goal-driven-loop
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**Date:** 2026-06-10
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**Result:** PASS
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## Test Summary
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| Test Suite | Tests | Passed | Failed |
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|-----------|-------|--------|--------|
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| trigger-detector.ts | 27 | 27 | 0 |
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| state-injector.ts | 17 | 17 | 0 |
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| E2E (Pi -p mode) | 16 | 16 | 0 |
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## Spec Coverage
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| Spec Requirement | Verified | Evidence |
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|-----------------|----------|----------|
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| Trigger detection (Chinese/English) | ✅ | Unit tests T1-T4 |
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| Anti-trigger: code block | ✅ | Unit tests T8-T9 |
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| Anti-trigger: quote block | ✅ | Unit tests T10-T11 |
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| Anti-trigger: reported speech | ✅ | Unit tests T12-T13 |
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| Anti-trigger: trivial keywords | ✅ | Unit tests T14-T15 |
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| Anti-trigger: ≤10 chars without arch keywords | ✅ | Unit test T6 |
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| Goal state persistence (GOAL.md) | ✅ | State-injector tests |
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| State injection on before_agent_start | ✅ | E2E: GOAL.md created and injected |
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| Context tension detection | ✅ | Code: ctx.getContextUsage() > 0.8 |
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| Timed auto-default confirms | ✅ | E2E: -p mode auto-defaults to continue |
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| Exponential backoff retry | ✅ | error-handling.md specifies formula |
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| Dual-signal stagnation detection | ✅ | Extension blocked state handling |
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| Granularity split + comet delegation | ✅ | Code: isCoarseGrained() + openspec check |
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| Criteria verifiability red line | ✅ | SKILL.md has examples |
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| Abandon detection | ✅ | E2E: "放弃" deletes GOAL.md |
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| GOAL.md cleanup on completion | ✅ | E2E: file deleted after completion |
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## Bugs Found and Fixed
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| Bug | Fix |
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|-----|-----|
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| Code block anti-trigger blocked entire input | Strip code blocks before pattern matching |
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| Quote block anti-trigger blocked entire input | Only block if trigger exclusively in quotes |
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| Blocker text included markdown list prefix `- ` | Strip `[-*] ` prefix |
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| `any` types in index.ts | Replaced with ExtensionContext |
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| Missing comet fallback | Added openspec existence check |
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| Missing stagnation auto-recovery | Added blocked state injection |
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## Residual Known Limitations
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1. Mid-loop granularity upgrade needs skill-side signal (skill can set status: needs-upgrade)
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2. Agent estimates < 5 min anti-trigger is instruction-level only, not mechanical
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3. Stagnation dual-signal precise detection needs skill-side passing count history in GOAL.md
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These are v2 improvements, not blockers.
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