~cytrogen/gstack

ref: 22ad3e5b6479b60f330df992d3c6ae18a97cffa2 gstack/retro/SKILL.md -rw-r--r-- 29.0 KiB
4fe0ce9c — Garry Tan a month ago
feat: natural language skill routing + proactive suggestions (v0.7.1) (#195)

* feat: add trigger phrases to /debug and /office-hours

These two skills had zero "Use when asked to..." phrases, making them
completely invisible to natural language. Users saying "debug this" or
"brainstorm an idea" would get no skill invocation.

* feat: add proactive triggers to all workflow skills

Every skill now has "Proactively suggest when..." language so Claude
surfaces skills at natural moments — not just when the user says
specific trigger phrases.

* feat: lifecycle map + proactive preference system

Root gstack description now includes a developer workflow guide mapping
12 stages to skills. Preamble reads proactive preference via gstack-config.
Users can opt out with "stop suggesting things" and re-enable with
"be proactive again" — natural language toggle, no CLI needed.

* test: 11 journey-stage E2E routing tests + trigger phrase validation

Each test simulates a real development stage (ideation, plan review,
debug, QA, ship, retro...) with realistic project context and verifies
the right skill fires from natural language alone. 11/11 pass.

* chore: bump version and changelog (v0.7.1)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
6000af45 — Garry Tan a month ago
feat: founder discovery engine + /debug skill — v0.7.0 (#185)

* feat: add escalation protocol to preamble — all skills get DONE/BLOCKED/NEEDS_CONTEXT

Every skill now reports completion status (DONE, DONE_WITH_CONCERNS, BLOCKED,
NEEDS_CONTEXT) and has escalation rules: 3 failed attempts → STOP, security
uncertainty → STOP, scope exceeds verification → STOP.

"It is always OK to stop and say 'this is too hard for me.'"

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: add verification gate to /ship (Step 6.5) — no push without fresh evidence

Before pushing, re-verify tests if code changed during review fixes.
Rationalization prevention: "Should work now" → RUN IT.
"I'm confident" → Confidence is not evidence.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: add scope drift detection + verification of claims to /review

Step 1.5: Before reviewing code quality, check if the diff matches stated
intent. Flags scope creep and missing requirements (INFORMATIONAL).

Step 5 addition: Every review claim must cite evidence — "this pattern is
safe" needs a line reference, "tests cover this" needs a test name.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: mandatory implementation alternatives + design doc lookup in /plan-ceo-review

Step 0C-bis: Every plan must consider 2-3 approaches (minimal viable vs ideal
architecture) before mode selection. RECOMMENDATION required.

Pre-Review System Audit now checks ~/.gstack/projects/ for /brainstorm design
docs (branch-filtered with fallback).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: design doc lookup in /plan-eng-review + fix branch name sanitization

Step 0 now checks ~/.gstack/projects/ for /brainstorm design docs
(branch-filtered with fallback, reads Supersedes: for revision context).

Fix: branch names with '/' (e.g. garrytan/better-process) now get
sanitized via tr '/' '-' in test plan artifact filenames.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: new /brainstorm and /debug skills

/brainstorm: Socratic design exploration before planning. Context gathering,
clarifying questions (smart-skip), related design discovery (keyword grep),
premise challenge, forced alternatives, design doc artifact with lineage
tracking (Supersedes: field). Writes to ~/.gstack/projects/$SLUG/.

/debug: Systematic root-cause debugging. Iron Law: no fixes without root
cause investigation. Pattern analysis, hypothesis testing with 3-strike
escalation, structured DEBUG REPORT output.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* test: structural tests for new skills + escalation protocol assertions

Add brainstorm + debug to skillsWithUpdateCheck and skillsWithPreamble arrays.
Add structural tests: brainstorm (Phase 1-6, Design Doc, Supersedes, Smart-skip),
debug (Iron Law, Root Cause, Pattern Analysis, Hypothesis, DEBUG REPORT, 3-strike).
Add escalation protocol tests (DONE_WITH_CONCERNS, BLOCKED, NEEDS_CONTEXT) for
all preamble skills.

Also: 2 new TODOs (design docs → Supabase sync, /plan-design-review skill),
update CLAUDE.md project structure with new skill directories.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v0.6.0)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: rename /brainstorm → /office-hours across references

Update CHANGELOG, CLAUDE.md, TODOS, design-consultation, plan-ceo-review,
and gen-skill-docs to reference the new office-hours skill name.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: YC Office Hours — dual-mode product diagnostic + builder brainstorm

Rewrite /office-hours with two modes:

Startup mode: six forcing questions (Demand Reality, Status Quo, Desperate
Specificity, Narrowest Wedge, Observation & Surprise, Future-Fit) that push
founders toward radical honesty about demand, users, and product decisions.
Includes smart routing by product stage, intrapreneurship adaptation, and
YC apply CTA for strong-signal founders.

Builder mode: generative brainstorming for side projects, hackathons,
learning, and open source. Enthusiastic collaborator tone, design thinking
questions, no business interrogation.

Mode is determined by an explicit question in Phase 1 — no guessing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* test: add 14 assertions for YC Office Hours content coverage

Validates dual-mode structure (Startup/Builder), all six forcing questions,
builder brainstorming content, intrapreneurship adaptation, YC apply CTA,
and operating principles for both modes. 192 tests total, all passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: update project documentation for v0.6.1

- README.md: added /office-hours and /debug to skills table, updated
  skill count from 13 to 15, added both to install instructions
- docs/skills.md: added /office-hours and /debug deep dive sections
- CLAUDE.md: updated office-hours description to reflect dual-mode
- CONTRIBUTING.md: updated skill count from 13 to 15
- CHANGELOG.md: added YC Office Hours and /debug entries to 0.6.0

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: founder discovery engine in /office-hours (v0.7.0)

Turn /office-hours into a YC founder discovery engine. Every session now
ends with three beats: signal reflection (specific callbacks to what the
user said), "One more thing." transition, and a personal plea from Garry
Tan with three tiers based on founder signal strength. Top tier uses
AskUserQuestion to ask directly and opens ycombinator.com/apply?ref=gstack.

Adds Phase 4.5 (Founder Signal Synthesis), "What I noticed about how you
think" section to both design doc templates, anti-slop GOOD/BAD examples,
and emotional targets per tier.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* test: add validation assertions for founder discovery engine

8 new assertions covering: YC apply CTA with ref=gstack tracking,
"What I noticed" design doc section, golden age framing, Garry Tan
personal plea, founder signal synthesis phase, three-tier decision
rubric, anti-slop GOOD/BAD examples, "One more thing" transition beat.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: update project documentation for v0.7.0

VERSION: 0.6.4.1 → 0.7.0
CHANGELOG: new entry — Office Hours Gets Personal
README: updated /office-hours and /plan-design-review descriptions
docs/skills.md: updated /office-hours table + deep dive section
TODOS.md: added /yc-prep skill TODO (P2)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: remove duplicate Install section, fix stale skills lists, deduplicate CHANGELOG entries

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
bc86a665 — Garry Tan a month ago
feat: add trigger phrases to skill descriptions for better model matching (v0.6.4.1) (#169)

* feat: add trigger phrases to skill descriptions for better model matching

Anthropic's skill best practices: "the description field is not a summary —
it's when to trigger." Add explicit "Use when asked to..." phrases to 12 skill
descriptions so Claude's auto-discovery works with natural language requests
like "deploy this" or "check my diff", not just explicit /slash-commands.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add on-demand hooks and telemetry to TODOS.md

Captures two ideas from Anthropic's skill best practices post:
- /careful, /freeze, /guard on-demand hook skills (P3)
- Skill usage telemetry via preamble JSONL append (P3)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v0.6.4.1)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: exclude internal details from CHANGELOG style guide

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
9d47619e — Garry Tan a month ago
feat: Completeness Principle — Boil the Lake (v0.6.1) (#140)

* feat: Completeness Principle — Boil the Lake (WIP, pre-merge)

Add Completeness Principle to all skill preambles, dual-time estimates,
compression table, anti-pattern gallery, Lake Score, and completeness
gaps review category. VERSION/CHANGELOG will be rebased after merge.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: update stale version reference in TODOS.md (v0.5.3 → v0.6.1)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: update CHANGELOG date + README for v0.6.1 features

- Add date to CHANGELOG 0.6.1 entry
- Add Completeness Principle to README intro
- Add SELECTIVE EXPANSION mode to CEO review section
- Add test bootstrap mention to /ship section
- Fix uninstall command missing design-consultation in project uninstall
- Add "recommends shortcuts" and "no tests" to Without gstack list

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: split README into lean intro + docs/ directory (gh CLI pattern)

README: 875 → 243 lines. Keeps intro, skill table, demo, install, and
troubleshooting. All per-skill deep dives, Greptile integration guide,
and contributor mode docs moved to docs/ directory.

- docs/skills.md — full philosophy and examples for all 13 skills
- docs/greptile.md — Greptile setup and triage workflow
- docs/contributor-mode.md — how to enable and use contributor mode
- README now links to docs/ via Documentation table
- Updated skill table entries with latest features (fix-first, regression
  tests, test health, completeness gaps)
- Updated demo transcript with AUTO-FIXED, coverage audit, regression test

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: remove "competitor" language, rewrite README in Garry's voice

Replace "browses competitors" with "knows the landscape" / "what's out
there" throughout all user-facing copy. Trim README from 243 to 167
lines — tighter, more opinionated, less listicle energy. Remove
Completeness Principle from README top (it lives in CLAUDE.md and the
skill preambles where Claude actually reads it).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: rewrite README in Garry's raw voice — AGI era, L8 factory, real stories

The README now sounds like Garry, not a product page. Leads with the
live experiment, the 16k LOC/day reality, the real-life coding stories
(Austin, hospital bedside). Highlights the newest unlocks (design at
the heart, /qa parallelism, smart review routing, test bootstrap).
Closes with an open invitation — free MIT, fork it, let's all ride
the wave together.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add Garry's bonafides to README intro — Palantir, Posterous, YC, 600k LOC

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add real /retro numbers — 140k lines, 362 commits across 3 projects

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add "in the last 60 days" timeframe to 600k LOC claim

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add GitHub contribution graphs — 2026 vs 2013 side by side

Same person, different era. 2013: 772 contributions building Bookface.
2026: 1,237 contributions and accelerating. The difference is the tooling.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: clarify /retro stats are from last 7 days

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add designer/PM/eng manager roles to intro

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: remove Josh/L8 reference from README

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: move demo up, make it dramatically more impressive

Show the actual architecture diagram, auto-fixed issues, 100% coverage,
regression test generation. Punch line: "That is not a copilot. That is
a team."

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: remove "My journey" section — intro already covers it

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: prefix all skill commands with You: in demo transcript

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: collapse You/Claude lines in demo — no gap between command and response

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: clarify plan mode flow in demo — approve, exit, Claude implements

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: move /ship to end of demo — review → QA → ship is the real flow

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add /plan-design-review to demo, tighten CEO response

Shorter CEO reply, compressed eng diagram, added design audit with
AI Slop score. Seven commands now: plan → eng → build → design →
review → QA → ship.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: move design review before implementation — it's part of planning

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: reorder demo — design before eng, after CEO

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: remove URL from /plan-design-review in demo

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add [...] annotations showing what actually happens at each step

Each step now shows what the agent does under the hood: 8 expansion
proposals cherry-picked, 80-item design audit, ASCII diagrams for
every flow, 2400 lines written in 8 minutes, real browser QA, bug
found and fixed. Makes the demo feel real, not abstract.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: rename Contributor Mode to How to Contribute in docs table

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add Coinbase, Instacart, Rippling to YC bonafides

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add "one or two people in a garage" to founder story

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add skill table to top of skills.md with anchor links

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: consolidate — roll contributor-mode into CONTRIBUTING, greptile into skills

- docs/contributor-mode.md → merged into CONTRIBUTING.md (session awareness section)
- docs/greptile.md → merged into docs/skills.md (Greptile integration section)
- Reordered docs table: Skills > Architecture > Browser > Contributing > Changelog

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
a2d756f9 — Garry Tan a month ago
feat: Test Bootstrap + Regression Tests + Coverage Audit (v0.6.0) (#136)

* feat: test bootstrap, regression tests, coverage audit, retro test health

- Add {{TEST_BOOTSTRAP}} resolver to gen-skill-docs.ts
- Add Phase 8e.5 regression test generation to /qa and /qa-design-review
- Add Step 3.4 test coverage audit with quality scoring to /ship
- Add test health tracking to /retro
- Add 2 E2E evals (bootstrap + coverage audit)
- Add 26 validation tests
- Update ARCHITECTURE.md placeholder table
- Add 2 P3 TODOs (CI/CD non-GitHub, auto-upgrade weak tests)

* chore: bump version and changelog (v0.6.0)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: make coverage audit trace actual codepaths, not just syntax patterns

Step 3.4 now instructs Claude to read full files, trace data flow through
every branch, diagram the execution, and check each branch against tests.
Phase 8e.5 regression tests now trace the bug's codepath before writing
the test, catching adjacent edge cases.

* feat: coverage audit now maps user flows, interactions, and error states

Step 3.4 now covers the full picture: code branches AND user-facing behavior.
Maps user flows (complete journey through the feature), interaction edge cases
(double-click, back button, stale state, slow connection), error states
(what does the user actually see?), and boundary states (zero results,
10k results, max-length input). Coverage diagram splits into Code Path
Coverage and User Flow Coverage sections with separate percentages.

* fix: raise test gen cap to 20, add validation tests for user flow coverage

- Raise Step 3.4 test generation cap from 10 to 20 (code + user flow combined)
- Add 3 validation tests: codepath tracing, user flow mapping, diagram sections

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
276d0cc6 — Garry Tan a month ago
feat: always-on ELI16 + branch detection (v0.4.3) (#108)

* feat: always-on ELI16 + branch detection in preamble

- Add _BRANCH detection to preamble bash block (git branch --show-current)
- Merge ELI16 rules into default AskUserQuestion format (always-on)
- Remove _SESSIONS >= 3 conditional — better questions always
- Add simplification rules: plain English, no jargon, no raw function names
- Update tests for branch detection and simplification regression guard

* chore: bump version and changelog (v0.4.3)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
78e519e3 — Garry Tan a month ago
feat: await support in browse js/eval + contributor mode v2 (#104)

* feat: support await in $B js and eval commands

Auto-wrap await expressions in async IIFE context so
$B js "await fetch(...)" works without SyntaxError.

- hasAwait() strips comments before detection
- js: expression wrapping (async()=>(expr))()
- eval: smart wrapping — single-line=expression, multi-line=block
- 6 new unit tests covering async, false-positive, and return semantics

* feat: redesign contributor mode — periodic reflection with 0-10 rating

Replace passive "report when things break" with active reflection:
- Rate gstack experience 0-10 at workflow step boundaries
- Historical calibration example (await bug) anchors the reporting bar
- "What would make this a 10" field focuses on actionable improvements
- Removed category lists in favor of judgment-based assessment

* test: add deterministic contributor mode preamble validation

40 new skill-validation tests (4 checks × 10 skills) verify:
- 0-10 rating scale present
- Calibration example present
- "What would make this a 10" field present
- Periodic reflection (not per-command)

Update existing E2E contributor eval for new report format.

* chore: bump version and changelog (v0.4.2)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: improve contributor mode + qa-quick E2E reliability

Contributor mode:
- Add "do not truncate" directive to template — agent was stopping
  after "My rating" without completing Steps/Raw output/What would
  make this a 10 sections
- Restore assertions for Steps to reproduce and Date footer

QA quick:
- Make test server URL prominent: top of prompt, explicit "already
  running" and "do NOT discover ports" instructions
- Bump session timeout 180s→240s and test timeout 240s→300s
- Set B= at top of prompt (was buried in prose)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: use flexible assertions for contributor mode E2E

Agent writes thorough reports with creative section names
("Repro Steps" vs "Steps to reproduce"). Match intent not formatting:
- /repro|steps to reproduce/ for reproduction steps
- /date.*2026/ for date footer presence

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add E2E eval failure blame protocol

"Not related to our changes" is an extraordinary claim that requires
extraordinary proof. When evals fail during /ship:

1. Run the same eval on main — prove it fails there too
2. If it passes on main, it IS your change — trace the blame
3. If you can't verify, say "unverified" not "pre-existing"

Added to CLAUDE.md and as a comment in skill-e2e.test.ts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: update CONTRIBUTING.md and BROWSER.md for v0.4.2

CONTRIBUTING.md: update contributor mode description — now describes
periodic 0-10 reflection loop instead of passive friction detection.

BROWSER.md: add js/eval async documentation — await expressions are
auto-wrapped in async context, single-line eval returns values directly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: restore v0.4.2 changelog entries lost during cherry-pick conflict

The base branch detection entries from main were dropped when resolving
the CHANGELOG conflict — should have merged both sets, not replaced.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
1e06b6a5 — Garry Tan a month ago
fix: dynamic base branch detection across all SKILL templates (v0.3.10) (#81)

* feat: add {{BASE_BRANCH_DETECT}} resolver to gen-skill-docs

DRY placeholder for dynamic base branch detection across PR-targeting
skills. Detects via gh pr view (existing PR base) → gh repo view
(repo default) → fallback to main.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: ship skill detects base branch instead of hardcoding main

Replaces ~14 hardcoded 'main' references with dynamic detection via
{{BASE_BRANCH_DETECT}}. Fixes stacked branches and Conductor workspaces
targeting non-main branches. Adds --base <base> to gh pr create.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: review, qa, plan-ceo-review detect base branch dynamically

Same pattern as ship: replaces hardcoded 'main' with {{BASE_BRANCH_DETECT}}.
Also cleans up qa bash-isms (REPORT_DIR variable, port chaining).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: retro detects default branch instead of hardcoding origin/main

Retro queries commit history (not PR targets), so uses simpler detection:
gh repo view defaultBranchRef. Replaces ~11 origin/main refs with
origin/<default>.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: add explicit cross-step references in gstack-upgrade template

Bash blocks are self-contained, but cross-block variable references
(INSTALL_DIR from Step 2) were implicit. Adds prose making them explicit.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs+test: SKILL authoring guidance + regression tests

Adds "Writing SKILL templates" section to CLAUDE.md explaining that
templates are prompts, not scripts. Adds validation test catching
hardcoded 'main' in git commands, and resolver content test.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: update ARCHITECTURE + CONTRIBUTING for new placeholders

Add {{BASE_BRANCH_DETECT}} to ARCHITECTURE.md placeholder list.
Cross-reference CLAUDE.md template authoring guidance from CONTRIBUTING.md.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v0.3.10)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: add missing blank line between resolver functions

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* test: add 3 E2E smoke tests for base branch detection

- /review: verifies Step 0 detection + git diff against detected base
- /ship: truncated dry-run (Steps 0-1 only, no push/PR), asserts no
  destructive actions
- /retro: verifies default branch detection for git log queries

Covers the {{BASE_BRANCH_DETECT}} resolver path (review), the ship
template's dual abort check, and retro's inline detection pattern.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v0.4.2)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
3e3843c4 — Garry Tan a month ago
feat: contributor mode, session awareness, recommendation format (#90)

* feat: contributor mode, session awareness, universal RECOMMENDATION format

- Rename {{UPDATE_CHECK}} → {{PREAMBLE}} across all 10 skill templates
- Add session tracking (touch ~/.gstack/sessions/$PPID, count active sessions)
- ELI16 mode when 3+ concurrent sessions detected (re-ground user on context)
- Contributor mode: auto-file field reports to ~/.gstack/contributor-logs/
- Universal AskUserQuestion format: context → question → RECOMMENDATION → options
- Update plan-ceo-review and plan-eng-review to reference preamble baseline
- Add vendored symlink awareness section to CLAUDE.md
- Rewrite CONTRIBUTING.md with contributor workflow and cross-project testing
- Add tests for contributor mode and session awareness in generated output
- Add E2E eval for contributor mode report filing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add Enum & Value Completeness to /review critical checklist

New CRITICAL review category that traces new enum values, status strings,
and type constants through every consumer outside the diff. Catches the
class of bugs where a new value is added but not handled in all switch/case
chains, allowlists, or frontend-backend contracts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: bump v0.4.1, user-facing changelog, update qa-only template and architecture docs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add CHANGELOG style guide — user-facing, sell the feature

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* docs: rewrite v0.4.1 changelog to be user-facing and sell the features

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: add evals for RECOMMENDATION format, session awareness, and enum completeness

Free tests (Tier 1): RECOMMENDATION format + session awareness in all
preamble SKILL.md files, enum completeness checklist structure and CRITICAL
classification.

E2E eval: /review catches missed enum handlers when a new status value
is added but not handled in case/switch and notify methods.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: add E2E eval for session awareness ELI16 mode

Stubs _SESSIONS=4, gives agent a decision point on feature/add-payments
branch, verifies the output re-grounds the user with project, branch,
context, and RECOMMENDATION — the ELI16 mode behavior for 3+ sessions.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* fix: contributor mode eval marked FAIL due to expected browse error

The test intentionally runs a nonexistent binary to trigger contributor
mode. The session runner's browse error detection catches "no such file
or directory...browse" and sets browseErrors, causing recordE2E to mark
passed=false. Override passed to check only exitReason since the browse
error is the expected scenario.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
bb46ca6b — Garry Tan a month ago
feat: smart update check with auto-upgrade, snooze backoff, config CLI (v0.3.9) (#62)

* feat: add bin/gstack-config CLI for reading/writing ~/.gstack/config.yaml

Simple get/set/list interface for persistent gstack configuration.
Used by update-check and upgrade skill for auto_upgrade and update_check settings.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: smart update check with 12h cache, snooze backoff, config disable

- Reduce cache TTL from 24h to 12h for faster update detection
- Add exponential snooze backoff: 24h → 48h → 1 week (resets on new version)
- Add update_check: false config option to disable checks entirely
- Clear snooze file on just-upgraded
- 14 new tests covering snooze levels, expiry, corruption, and config paths

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: upgrade skill with auto-upgrade, 4-option prompt, vendored sync

- Auto-upgrade mode via config or GSTACK_AUTO_UPGRADE=1 env var
- 4-option AskUserQuestion: upgrade once, always, not now, never
- Step 4.5: sync local vendored copy after upgrading primary install
- Snooze write with escalating backoff on "Not now"
- Update preamble text in gen-skill-docs for new upgrade flow
- Regenerate all SKILL.md files

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: simplify upgrade instructions, move auto-upgrade to completed

README now points to /gstack-upgrade instead of long paste commands.
Auto-upgrade TODO moved to Completed section (v0.3.8).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: bump version and changelog (v0.3.9)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
41141007 — Garry Tan a month ago
feat: TODOS-aware skills, 2-tier Greptile replies, gitignore fix (#61)

* fix: log non-ENOENT errors in ensureStateDir() instead of silently swallowing

Replace bare catch {} with ENOENT-only silence. Non-ENOENT errors (EACCES,
ENOSPC) are now logged to .gstack/browse-server.log. Includes test for
permission-denied scenario with chmod 444.

* feat: merge TODO.md + TODOS.md into unified backlog with shared format reference

Merge TODO.md (roadmap) and TODOS.md (near-term) into one file organized by
skill/component with P0-P4 priority ordering and Completed section. Add shared
review/TODOS-format.md for canonical format. Add static validation tests.

* feat: add 2-tier Greptile reply system with escalation detection

Add reply templates (Tier 1 friendly, Tier 2 firm), explicit escalation
detection algorithm, and severity re-ranking guidance to greptile-triage.md.

* feat: cross-skill TODOS awareness + Greptile template refs in all skills

/ship Step 5.5: auto-detect completed TODOs, offer reorganization.
/review Step 5.5: cross-reference PR against open TODOs.
/plan-ceo-review, /plan-eng-review: TODOS context in planning.
/retro: Backlog Health metric. /qa: bug TODO context in diff-aware mode.
All Greptile-aware skills now reference reply templates and escalation detection.

* chore: bump version and changelog (v0.3.8)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: update CONTRIBUTING.md for v0.3.8 changes

Clarify test tier cost table (Tier 3 standalone vs combined), add TODOS.md
to "Things to know", mention Greptile triage in ship workflow description.

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
7d266661 — Garry Tan a month ago
Merge pull request #55 from garrytan/v0.3.6-qa-upgrades

feat: E2E observability + eval infrastructure + all skills templated
a67dae5f — Garry Tan a month ago
fix: update check preamble exits 1 when up to date — convert all skills to .tmpl

The `[ -n "$_UPD" ] && echo "$_UPD"` line in 5 skills was missing `|| true`,
causing exit code 1 when the update check finds no update (empty $_UPD).

Fix: convert ship/, review/, plan-ceo-review/, plan-eng-review/, retro/ to
.tmpl templates using {{UPDATE_CHECK}} placeholder (same as browse/qa/etc).
All 9 skills now generated from templates — preamble changes propagate everywhere.

Also: regenerates qa/SKILL.md which had drifted from its template, adds 12 tests
validating the update check preamble exits 0 in all skills, removes completed TODO.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
3d750d89 — Garry Tan a month ago
Merge remote-tracking branch 'origin/main' into v0.3.6-qa-upgrades

# Conflicts:
#	test/skill-e2e.test.ts
6b69c46a — Garry Tan a month ago
feat: daily update check + /gstack-upgrade skill (v0.3.4) (#42)

* feat: add daily update check script + /gstack-upgrade skill

bin/gstack-update-check: pure bash, checks VERSION against remote once/day,
outputs UPGRADE_AVAILABLE or JUST_UPGRADED. Uses ~/.gstack/ for state.

gstack-upgrade/SKILL.md: new skill with inline upgrade flow for all preambles.
Detects global-git, local-git, vendored installs. Shows What's New from CHANGELOG.

browse/test/gstack-update-check.test.ts: 10 test cases covering all branch paths.

* refactor: remove version check from find-browse, simplify to binary locator

Delete checkVersion(), readCache(), writeCache(), fetchRemoteSHA(),
resolveSkillDir(), CacheEntry interface, REPO_URL/CACHE_PATH/CACHE_TTL
constants, and META output from find-browse.ts.

Version checking is now handled by bin/gstack-update-check (previous commit).

* feat: add update check preamble to all 9 skills

Every skill now runs bin/gstack-update-check on invocation. If an upgrade
is available, reads gstack-upgrade/SKILL.md inline upgrade flow.

Also adds AskUserQuestion to 5 skills that lacked it (gstack root, browse,
qa, retro, setup-browser-cookies) and Bash to plan-eng-review.

Simplifies qa and setup-browser-cookies setup blocks (removes META parsing).

* chore: bump version and changelog (v0.3.4)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: remove unused import + add corrupt cache test

Address pre-landing review findings:
- Remove unused mkdirSync import from gstack-update-check.test.ts
- Add Path I test: corrupt cache file falls through to remote fetch

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
07b4e15b — Garry Tan a month ago
feat: v0.3.2 — project-local state, diff-aware QA, Greptile integration (#36)

* fix: cookie import picker returns JSON instead of HTML

jsonResponse() was defined at module scope but referenced `url` which
only existed as a parameter of handleCookiePickerRoute(). Every API call
crashed, the catch block also crashed, and Bun returned a default HTML
page that the frontend couldn't parse as JSON.

Thread port via corsOrigin() helper and options objects. Add route-level
tests to prevent this class of bug from shipping again.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add help command to browse server

Agents that don't have SKILL.md loaded (or misread flags) had no way to
self-discover the CLI. The help command returns a formatted reference of
all commands and snapshot flags.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: version-aware find-browse with META signal protocol

Agents in other workspaces found stale browse binaries that were missing
newer flags. find-browse now compares the local binary's git SHA against
origin/main via git ls-remote (4hr cache), and emits META:UPDATE_AVAILABLE
when behind. SKILL.md setup checks parse META signals and prompt the user
to update.

- New compiled binary: browse/dist/find-browse (TypeScript, testable)
- Bash shim at browse/bin/find-browse delegates to compiled binary
- .version file written at build time with git commit SHA
- Build script compiles both browse and find-browse binaries
- Graceful degradation: offline, missing .version, corrupt cache all skip check

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: clean up .bun-build temp files after compile

bun build --compile leaves ~58MB temp files in the working directory.
Add rm -f .*.bun-build to the build script to clean up after each build.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: make help command reachable by removing it from META_COMMANDS

help was in META_COMMANDS, so it dispatched to handleMetaCommand() which
threw "Unknown meta command: help". Removing it from the set lets the
dedicated else-if handler in handleCommand() execute correctly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: bump version and changelog (v0.3.2)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add shared Greptile comment triage reference doc

Shared reference for fetching, filtering, and classifying Greptile
review comments on GitHub PRs. Used by both /review and /ship skills.
Includes parallel API fetching, suppressions check, classification
logic, reply APIs, and history file writes.

* feat: make /review and /ship Greptile-aware

/review: Step 2.5 fetches and classifies Greptile comments, Step 5
resolves them with AskUserQuestion for valid issues and false positives.

/ship: Step 3.75 triages Greptile comments between pre-landing review
and version bump. Adds Greptile Review section to PR body in Step 8.
Re-runs tests if any Greptile fixes are applied.

* feat: add Greptile batting average to /retro

Reads ~/.gstack/greptile-history.md, computes signal ratio
(valid catches vs false positives), includes in metrics table,
JSON snapshot, and Code Quality Signals narrative.

* docs: add Greptile integration section to README

Personal endorsement, two-layer review narrative, full UX walkthrough
transcript, skills table updates. Add Greptile training feedback loop
to TODO.md future ideas.

* feat: add local dev mode for testing skills from within the repo

bin/dev-setup creates .claude/skills/gstack symlink to the working tree
so Claude Code discovers skills locally. bin/dev-teardown cleans up.
DEVELOPING_GSTACK.md documents the workflow.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: narrow gitignore to .claude/skills/ instead of all .claude/

Avoids ignoring legitimate Claude Code config like settings.json or CLAUDE.md.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: rename DEVELOPING_GSTACK.md to CONTRIBUTING.md

Rewritten as a contributor-friendly guide instead of a dry plan doc.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: explain why dev-setup is needed in CONTRIBUTING.md quick start

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add browser interaction guidance to CLAUDE.md

Prevents Claude from using mcp__claude-in-chrome__* tools instead of /browse.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add shared config module for project-local browse state

Centralizes path resolution (git root detection, state dir, log paths) into
config.ts. Both cli.ts and server.ts import from it, eliminating duplicated
PORT_OFFSET/BROWSE_PORT/STATE_FILE logic.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: rewrite port selection to use random ports

Replace CONDUCTOR_PORT magic offset and 9400-9409 scan with random port
10000-60000. Atomic state file writes, log paths from config module,
binaryVersion field for auto-restart on update.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: move browse state from /tmp to project-local .gstack/

CLI now uses config module for state paths, passes BROWSE_STATE_FILE to
spawned server. Adds version mismatch auto-restart, legacy /tmp cleanup
with PID verification, and removes stale global install fallback.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: update crash log path reference to .gstack/

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* test: add config tests and update CLI lifecycle test

14 new tests for config resolution, ensureStateDir, readVersionHash,
resolveServerScript, and version mismatch detection. Remove obsolete
CONDUCTOR_PORT/BROWSE_PORT filtering from commands.test.ts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: update BROWSER.md and TODO.md for project-local state

Replace /tmp paths with .gstack/, remove CONDUCTOR_PORT docs, document
random port selection and per-project isolation. Add server bundling TODO.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: update README, CHANGELOG, and CONTRIBUTING for v0.3.2

- README: replace Conductor-aware language with project-local isolation,
  add Greptile setup note
- CHANGELOG: comprehensive v0.3.2 entry with all state management changes
- CONTRIBUTING: add instructions for testing branches in other repos

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: add diff-aware mode to /qa — auto-tests affected pages from branch diff

When on a feature branch, /qa now reads git diff main, identifies affected
pages/routes from changed files, and tests them automatically. No URL required.
The most natural flow: write code, /ship, /qa.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: update CHANGELOG for complete v0.3.2 coverage

Add missing entries: diff-aware QA mode, Greptile integration,
local dev mode, crash log path fix, README/SKILL.md updates.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
f7b95329 — Garry Tan a month ago
feat: Phase 3.5 — cookie import, QA testing, team retro (v0.3.1) (#29)

* Phase 2: Enhanced browser — dialog handling, upload, state checks, snapshots

- CircularBuffer O(1) ring buffer for console/network/dialog (was O(n) array+shift)
- Async buffer flush with Bun.write() (was appendFileSync)
- Dialog auto-accept/dismiss with buffer + prompt text support
- File upload command (upload <sel> <file...>)
- Element state checks (is visible/hidden/enabled/disabled/checked/editable/focused)
- Annotated screenshots with ref labels overlaid (-a flag)
- Snapshot diffing against previous snapshot (-D flag)
- Cursor-interactive element scan for non-ARIA clickables (-C flag)
- Snapshot scoping depth limit (-d N flag)
- Health check with page.evaluate + 2s timeout
- Playwright error wrapping — actionable messages for AI agents
- Fix useragent — context recreation preserves cookies/storage/URLs
- wait --networkidle / --load / --domcontentloaded flags
- console --errors filter (error + warning only)
- cookie-import <json-file> with auto-fill domain from page URL
- 166 integration tests (was ~63)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Phase 2: Rewrite SKILL.md as QA playbook + command reference

Reorient SKILL.md files from raw command reference to QA-first playbook
with 10 workflow patterns (test user flows, verify deployments, dogfood
features, responsive layouts, file upload, forms, dialogs, compare pages).
Compact command reference tables at the bottom.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Phase 3: /qa skill — systematic QA testing with health scores

New /qa skill for systematic web app QA testing. Three modes:
- full: 5-10 documented issues with screenshots and repro steps
- quick: 30-second smoke test with health score
- regression: compare against saved baseline

Includes issue taxonomy (7 categories, 4 severity levels), structured
report template, health score rubric (weighted across 7 categories),
framework detection guidance (Next.js, Rails, WordPress, SPA).

Also adds browse/bin/find-browse (DRY binary discovery using git
rev-parse), .gstack/ to .gitignore, and updated TODO roadmap.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Bump to v0.3.0 — Phase 2 + Phase 3 changelog

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: cookie-import-browser — Chromium cookie decryption module + tests

Pure logic module for reading and decrypting cookies from macOS Chromium
browsers (Comet, Chrome, Arc, Brave, Edge). Supports v10 AES-128-CBC
encryption with macOS Keychain access, PBKDF2 key derivation, and
per-browser key caching. 18 unit tests with encrypted cookie fixtures.

* feat: cookie picker web UI + route handler

Two-panel dark-theme picker served from the browse server. Left panel
shows source browser domains with search and import buttons. Right panel
shows imported domains with trash buttons. No cookie values exposed.
6 API endpoints, importedDomains Set tracking, inline clearCookies.

* feat: wire cookie-import-browser into browse server

Add cookie-picker route dispatch (no auth, localhost-only), add
cookie-import-browser to WRITE_COMMANDS and CHAIN_WRITE, add serverPort
property to BrowserManager, add write command with two modes (picker UI
vs --domain direct import), update CLI help text.

* chore: /setup-browser-cookies skill + docs (Phase 3.5)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: bump version and changelog (v0.3.1)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* security: redact sensitive values from command output (PR #21)

type no longer echoes text (reports character count), cookie redacts
value with ****, header redacts Authorization/Cookie/X-API-Key/X-Auth-Token,
storage set drops value, forms redacts password fields. Prevents secrets
from persisting in LLM transcripts. 7 new tests.

Credit: fredluz (PR #21)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* security: path traversal prevention for screenshot/pdf/eval (PR #26)

Add validateOutputPath() for screenshot/pdf/responsive (restricts to
/tmp and cwd) and validateReadPath() for eval (blocks .. sequences and
absolute paths outside safe dirs). 7 new tests.

Credit: Jah-yee (PR #26)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: auto-install Playwright Chromium in setup (PR #22)

Setup now verifies Playwright can launch Chromium, and auto-installs
it via `bunx playwright install chromium` if missing. Exits non-zero
if build or Chromium launch fails.

Credit: AkbarDevop (PR #22)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* security: fix path validation bypass, CORS restriction, cookie-import path check

- startsWith('/tmp') matched '/tmpevil' — now requires trailing slash
- CORS Access-Control-Allow-Origin changed from * to http://127.0.0.1:<port>
- cookie-import now validates file paths (was missing validateReadPath)
- 3 new tests for prefix collision and cookie-import path traversal

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: address review informational issues + add regression tests

- Add cookie-import to CHAIN_WRITE set for chain command routing
- Add path validation to snapshot -a -o output path
- Fix package.json version to match 0.3.1
- Use crypto.randomUUID() for temp DB paths (unpredictable filenames)
- Add regression tests for chain cookie-import and snapshot path validation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add /qa, /setup-browser-cookies to README + update BROWSER.md

- Add /qa and /setup-browser-cookies to skills table, install/update/uninstall blurbs
- Add dedicated README sections for both new skills with usage examples
- Update demo workflow to show cookie import → QA → browse flow
- Update BROWSER.md: cookie import commands, new source files, test count (203)
- Update skill count from 6 to 8

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* feat: team-aware /retro v2.0 — per-person praise and growth opportunities

- Identify current user via git config, orient narrative as "you" vs teammates
- Add per-author metrics: commits, LOC, focus areas, commit type mix, sessions
- New "Your Week" section with personal deep-dive for whoever runs the command
- New "Team Breakdown" with per-person praise and growth opportunities
- Track AI-assisted commits via Co-Authored-By trailers
- Personal + team shipping streaks
- Tone: praise like a 1:1, growth like investment advice, never compare negatively

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* docs: add Conductor parallel sessions section to README

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
3d901066 — Garry Tan a month ago
Initial release — gstack v0.0.1

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>