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feat: worktree isolation for E2E tests + infrastructure elegance (v0.11.12.0) (garrytan#425)
* refactor: extract gen-skill-docs into modular resolver architecture Break the 3000-line monolith into 10 domain modules under scripts/resolvers/: types, constants, preamble, utility, browse, design, testing, review, codex-helpers, and index. Each module owns one domain of template generation. The preamble module introduces a 4-tier composition system (T1-T4) so skills only pay for the preamble sections they actually need, reducing token usage for lightweight skills by ~40%. Adds a token budget dashboard that prints after every generation run showing per-skill and total token counts. Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]> * feat: tiered preamble — skills only pay for what they use Tag all 23 templates with preamble-tier (T1-T4). Lightweight skills like /browse and /benchmark get a minimal preamble (~40% fewer tokens), while review skills get the full stack. Regenerate all SKILL.md files. Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]> * feat: migrate eval storage to project-scoped paths Move eval results and E2E run artifacts from ~/.gstack-dev/evals/ to ~/.gstack/projects/$SLUG/evals/ so each project's eval history lives alongside its other gstack data. Falls back to legacy path if slug detection fails. Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]> * fix: sync package.json version with VERSION after merge Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]> * feat: add WorktreeManager for isolated test environments Reusable platform module (lib/worktree.ts) that creates git worktrees for test isolation and harvests useful changes as patches. Includes SHA-256 dedup, original SHA tracking for committed change detection, and automatic gitignored artifact copying (.agents/, browse/dist/). 12 unit tests covering lifecycle, harvest, dedup, and error handling. Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]> * feat: integrate worktree isolation into E2E test infrastructure Add createTestWorktree(), harvestAndCleanup(), and describeWithWorktree() helpers to e2e-helpers.ts. Add harvest field to EvalTestEntry for eval-store integration. Register lib/worktree.ts as a global touchfile. Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]> * feat: run Gemini and Codex E2E tests in worktrees Switch both test suites from cwd: ROOT to worktree isolation. Gemini (--yolo) no longer pollutes the working tree. Codex (read-only) gets worktree for consistency. Useful changes are harvested as patches for cherry-picking. Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]> * fix: skip symlinks in copyDirSync to prevent infinite recursion Adversarial review caught that .claude/skills/gstack may be a symlink back to the repo root, causing copyDirSync to recurse infinitely when copying gitignored artifacts into worktrees. Co-Authored-By: Claude Opus 4.6 <[email protected]> * chore: bump version and changelog (v0.11.12.0) Co-Authored-By: Claude Opus 4.6 <[email protected]> * fix: relax session-awareness assertion to accept structured options The LLM consistently presents well-formatted A/B choices with pros/cons but doesn't always use the exact string "RECOMMENDATION". Accept case-insensitive "recommend", "option a", "which do you want", or "which approach" as equivalent signals of a structured recommendation. Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]> --------- Co-authored-by: Claude Opus 4.6 (1M context) <[email protected]>
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‎.gitignore‎

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‎CHANGELOG.md‎

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# Changelog
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## [0.11.13.0] - 2026-03-24 — Worktree Isolation + Infrastructure Elegance
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### Added
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- **E2E tests now run in git worktrees.** Gemini and Codex tests no longer pollute your working tree. Each test suite gets an isolated worktree, and useful changes the AI agent makes are automatically harvested as patches you can cherry-pick. Run `git apply ~/.gstack-dev/harvests/<id>/gemini.patch` to grab improvements.
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- **Harvest deduplication.** If a test keeps producing the same improvement across runs, it's detected via SHA-256 hash and skipped — no duplicate patches piling up.
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- **`describeWithWorktree()` helper.** Any E2E test can now opt into worktree isolation with a one-line wrapper. Future tests that need real repo context (git history, real diff) can use this instead of tmpdirs.
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### Changed
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- **Gen-skill-docs is now a modular resolver pipeline.** The monolithic 1700-line generator is split into 8 focused resolver modules (browse, preamble, design, review, testing, utility, constants, codex-helpers). Adding a new placeholder resolver is now a single file instead of editing a megafunction.
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- **Eval results are project-scoped.** Results now live in `~/.gstack/projects/$SLUG/evals/` instead of the global `~/.gstack-dev/evals/`. Multi-project users no longer get eval results mixed together.
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### For contributors
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- WorktreeManager (`lib/worktree.ts`) is a reusable platform module — future skills like `/batch` can import it directly.
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- 12 new unit tests for WorktreeManager covering lifecycle, harvest, dedup, and error handling.
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- `GLOBAL_TOUCHFILES` updated so worktree infrastructure changes trigger all E2E tests.
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## [0.11.12.0] - 2026-03-24 — Triple-Voice Autoplan
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Every `/autoplan` phase now gets two independent second opinions — one from Codex (OpenAI's frontier model) and one from a fresh Claude subagent. Three AI reviewers looking at your plan from different angles, each phase building on the last.

‎SKILL.md‎

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---
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name: gstack
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preamble-tier: 1
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version: 1.1.0
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description: |
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MANUAL TRIGGER ONLY: invoke only when user types /gstack.
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This only happens once. If `TEL_PROMPTED` is `yes`, skip this entirely.
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## AskUserQuestion Format
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**ALWAYS follow this structure for every AskUserQuestion call:**
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1. **Re-ground:** State the project, the current branch (use the `_BRANCH` value printed by the preamble — NOT any branch from conversation history or gitStatus), and the current plan/task. (1-2 sentences)
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2. **Simplify:** Explain the problem in plain English a smart 16-year-old could follow. No raw function names, no internal jargon, no implementation details. Use concrete examples and analogies. Say what it DOES, not what it's called.
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3. **Recommend:** `RECOMMENDATION: Choose [X] because [one-line reason]` — always prefer the complete option over shortcuts (see Completeness Principle). Include `Completeness: X/10` for each option. Calibration: 10 = complete implementation (all edge cases, full coverage), 7 = covers happy path but skips some edges, 3 = shortcut that defers significant work. If both options are 8+, pick the higher; if one is ≤5, flag it.
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4. **Options:** Lettered options: `A) ... B) ... C) ...` — when an option involves effort, show both scales: `(human: ~X / CC: ~Y)`
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Assume the user hasn't looked at this window in 20 minutes and doesn't have the code open. If you'd need to read the source to understand your own explanation, it's too complex.
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Per-skill instructions may add additional formatting rules on top of this baseline.
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## Completeness Principle — Boil the Lake
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AI-assisted coding makes the marginal cost of completeness near-zero. When you present options:
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- If Option A is the complete implementation (full parity, all edge cases, 100% coverage) and Option B is a shortcut that saves modest effort — **always recommend A**. The delta between 80 lines and 150 lines is meaningless with CC+gstack. "Good enough" is the wrong instinct when "complete" costs minutes more.
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- **Lake vs. ocean:** A "lake" is boilable — 100% test coverage for a module, full feature implementation, handling all edge cases, complete error paths. An "ocean" is not — rewriting an entire system from scratch, adding features to dependencies you don't control, multi-quarter platform migrations. Recommend boiling lakes. Flag oceans as out of scope.
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- **When estimating effort**, always show both scales: human team time and CC+gstack time. The compression ratio varies by task type — use this reference:
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| Task type | Human team | CC+gstack | Compression |
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|-----------|-----------|-----------|-------------|
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| Boilerplate / scaffolding | 2 days | 15 min | ~100x |
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| Test writing | 1 day | 15 min | ~50x |
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| Feature implementation | 1 week | 30 min | ~30x |
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| Bug fix + regression test | 4 hours | 15 min | ~20x |
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| Architecture / design | 2 days | 4 hours | ~5x |
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| Research / exploration | 1 day | 3 hours | ~3x |
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- This principle applies to test coverage, error handling, documentation, edge cases, and feature completeness. Don't skip the last 10% to "save time" — with AI, that 10% costs seconds.
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**Anti-patterns — DON'T do this:**
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- BAD: "Choose B — it covers 90% of the value with less code." (If A is only 70 lines more, choose A.)
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- BAD: "We can skip edge case handling to save time." (Edge case handling costs minutes with CC.)
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- BAD: "Let's defer test coverage to a follow-up PR." (Tests are the cheapest lake to boil.)
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- BAD: Quoting only human-team effort: "This would take 2 weeks." (Say: "2 weeks human / ~1 hour CC.")
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## Repo Ownership Mode — See Something, Say Something
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`REPO_MODE` from the preamble tells you who owns issues in this repo:
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- **`solo`** — One person does 80%+ of the work. They own everything. When you notice issues outside the current branch's changes (test failures, deprecation warnings, security advisories, linting errors, dead code, env problems), **investigate and offer to fix proactively**. The solo dev is the only person who will fix it. Default to action.
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- **`collaborative`** — Multiple active contributors. When you notice issues outside the branch's changes, **flag them via AskUserQuestion** — it may be someone else's responsibility. Default to asking, not fixing.
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- **`unknown`** — Treat as collaborative (safer default — ask before fixing).
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**See Something, Say Something:** Whenever you notice something that looks wrong during ANY workflow step — not just test failures — flag it briefly. One sentence: what you noticed and its impact. In solo mode, follow up with "Want me to fix it?" In collaborative mode, just flag it and move on.
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Never let a noticed issue silently pass. The whole point is proactive communication.
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## Search Before Building
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Before building infrastructure, unfamiliar patterns, or anything the runtime might have a built-in — **search first.** Read `~/.claude/skills/gstack/ETHOS.md` for the full philosophy.
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**Three layers of knowledge:**
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- **Layer 1** (tried and true — in distribution). Don't reinvent the wheel. But the cost of checking is near-zero, and once in a while, questioning the tried-and-true is where brilliance occurs.
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- **Layer 2** (new and popular — search for these). But scrutinize: humans are subject to mania. Search results are inputs to your thinking, not answers.
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- **Layer 3** (first principles — prize these above all). Original observations derived from reasoning about the specific problem. The most valuable of all.
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**Eureka moment:** When first-principles reasoning reveals conventional wisdom is wrong, name it:
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"EUREKA: Everyone does X because [assumption]. But [evidence] shows this is wrong. Y is better because [reasoning]."
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Log eureka moments:
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```bash
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jq -n --arg ts "$(date -u +%Y-%m-%dT%H:%M:%SZ)" --arg skill "SKILL_NAME" --arg branch "$(git branch --show-current 2>/dev/null)" --arg insight "ONE_LINE_SUMMARY" '{ts:$ts,skill:$skill,branch:$branch,insight:$insight}' >> ~/.gstack/analytics/eureka.jsonl 2>/dev/null || true
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```
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Replace SKILL_NAME and ONE_LINE_SUMMARY. Runs inline — don't stop the workflow.
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**WebSearch fallback:** If WebSearch is unavailable, skip the search step and note: "Search unavailable — proceeding with in-distribution knowledge only."
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## Contributor Mode
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If `_CONTRIB` is `true`: you are in **contributor mode**. You're a gstack user who also helps make it better.
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If `_CONTRIB` is `true`: you are in **contributor mode**. At the end of each major workflow step, rate your gstack experience 0-10. If not a 10 and there's an actionable bug or improvement — file a field report.
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**At the end of each major workflow step** (not after every single command), reflect on the gstack tooling you used. Rate your experience 0 to 10. If it wasn't a 10, think about why. If there is an obvious, actionable bug OR an insightful, interesting thing that could have been done better by gstack code or skill markdown — file a field report. Maybe our contributor will help make us better!
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**Calibration — this is the bar:** For example, `$B js "await fetch(...)"` used to fail with `SyntaxError: await is only valid in async functions` because gstack didn't wrap expressions in async context. Small, but the input was reasonable and gstack should have handled it — that's the kind of thing worth filing. Things less consequential than this, ignore.
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**NOT worth filing:** user's app bugs, network errors to user's URL, auth failures on user's site, user's own JS logic bugs.
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**To file:** write `~/.gstack/contributor-logs/{slug}.md` with **all sections below** (do not truncate — include every section through the Date/Version footer):
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**File only:** gstack tooling bugs where the input was reasonable but gstack failed. **Skip:** user app bugs, network errors, auth failures on user's site.
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**To file:** write `~/.gstack/contributor-logs/{slug}.md`:
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Hey gstack team — ran into this while using /{skill-name}:
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**What I was trying to do:** {what the user/agent was attempting}
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**What happened instead:** {what actually happened}
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**My rating:** {0-10} — {one sentence on why it wasn't a 10}
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**What I tried:** {action} | **What happened:** {result} | **Rating:** {0-10}
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## Repro
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**Date:** {YYYY-MM-DD} | **Version:** {gstack version} | **Skill:** /{skill}
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{one sentence}
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**Date:** {YYYY-MM-DD} | **Version:** {version} | **Skill:** /{skill}
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Slug: lowercase, hyphens, max 60 chars (e.g. `browse-js-no-await`). Skip if file already exists. Max 3 reports per session. File inline and continue — don't stop the workflow. Tell user: "Filed gstack field report: {title}"
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Slug: lowercase hyphens, max 60 chars. Skip if exists. Max 3/session. File inline, don't stop.
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## Completion Status Protocol
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‎SKILL.md.tmpl‎

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name: gstack
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Fast headless browser for QA testing and site dogfooding. Navigate pages, interact with

‎TODOS.md‎

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### Extend worktree isolation to Claude E2E tests
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**What:** Add `useWorktree?: boolean` option to `runSkillTest()` so any Claude E2E test can opt into worktree mode for full repo context instead of tmpdir fixtures.
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**Why:** Some Claude E2E tests (CSO audit, review-sql-injection) create minimal fake repos but would produce more realistic results with full repo context. The infrastructure exists (`describeWithWorktree()` in e2e-helpers.ts) — this extends it to the session-runner level.
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**Context:** WorktreeManager shipped in v0.11.12.0. Currently only Gemini/Codex tests use worktrees. Claude tests use planted-bug fixture repos which are correct for their purpose, but new tests that want real repo context can use `describeWithWorktree()` today. This TODO is about making it even easier via a flag on `runSkillTest()`.
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**Effort:** M (human: ~2 days / CC: ~20 min)
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**Priority:** P3
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**Depends on:** Worktree isolation (shipped v0.11.12.0)
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### E2E model pinning — SHIPPED
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~~**What:** Pin E2E tests to claude-sonnet-4-6 for cost efficiency, add retry:2 for flaky LLM responses.~~

‎VERSION‎

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0.11.12.0
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0.11.13.0

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