a638ca4332
* test(#3882): failing-first rows for sentinel phases skewing calibration Adds A1a/A1b/A2/A3 to tests/estimate-calibrate.test.cjs, the module's existing test file, rather than a new bug-NNNN file. collectCalibrationSamples (src/estimate-cli.cts:206) does a raw readdirSync over .planning/phases and never applies isSentinelPhaseId, so a sentinel phase (milestone 0 or 999) carrying a PLAN estimate / SUMMARY actuals pair contributes a phantom calibration sample. computeCalibration is median-based, so a single 50x outlier among three samples leaves the factor unmoved — asserting "the factor is unchanged" against one sentinel would pass on the broken code for the wrong reason. Each row instead asserts the WHOLE computed CalibrationResult object (factor, applied, confidence, sampleCount, clamped) for a sentinel-free project against its sentinel-injected twin: - A1a: one sentinel flips applied false->true and confidence low->med on phantom evidence (calibration switches on with zero real signal). - A1b: two sentinels corrupt the factor itself (1 -> 3, clamped false->true). - A2: the sentinel's own sample is verified absent from the returned list. - A3: the two genuine phases still contribute their own unchanged samples (regression pin — stops A1/A2 passing by filtering everything). Verified RED on today's code (node tests/estimate-calibrate.test.cjs): A1a/A1b/A2 fail with the exact differing objects; A3 and all pre-existing rows in the file remain green (no collateral). Refs #3882 * feat(#3882): route phase enumeration through its owner and name the sentinel axis Task 1: collectCalibrationSamples (src/estimate-cli.cts) hand-rolled a raw readdirSync over .planning/phases, treating every directory (including sentinel phases, milestone 0/999) as a completed phase and feeding phantom PLAN/SUMMARY samples into the estimation calibration factor. Routed through the existing owner, listMilestonePhaseDirs(phasesRoot) with no cwd -- already 'all milestones, sentinels excluded', exactly the combination this caller needs; no new API was required for this half. It now also surfaces the scope discriminator: an unreadable phases directory throws PhasesUnreadableError instead of silently returning zero samples, and cmdEstimateCalibrate reports it via a new ERROR_REASON.ESTIMATE_PHASES_UNREADABLE instead of persisting a phantom empty calibration document. Task 2: added listAllPhaseDirs(phasesDir, { includeSentinels }) to src/phase-locator.cts -- the one genuinely missing axis: 'physical set, sentinels INCLUDED'. includeSentinels has no default and is required, so a call site cannot obtain sentinel-inclusion by omission (compile-time refusal, not just documentation). Mirrors listMilestonePhaseDirs's absent/unreadable scope handling. Task 3: migrated the two exemptions whose written reason maps cleanly onto 'physical set, sentinels included' -- cmdRoadmapAnalyze's _phaseDirNames (src/roadmap.cts) and cmdInitMilestoneOp's diskPhaseDirs (src/init.cts), both heading->directory lookup indexes. Left the rest: archivePhaseDirectories's own body has no readdirSync to migrate (its callers already resolve dirs before calling it, and both current callers deliberately EXCLUDE sentinels -- migrating it would be an unauthorized behavior change, not an API swap); cmdValidateHealth's exemption is vestigial (its actual physical-set sweep already lives in planning-snapshot.cts's buildAllPhaseDirNamesField, a pre-existing near-duplicate of the new axis, flagged as a finding, not restructured); cmdPhasesClear/cmdMilestoneComplete/cmdVerifySchemaDrift/detectHasPriorPhases/detectUiPhaseActive want a different combination (sentinels excluded, or a single-phase lookup) and are unaffected. Task 4: detector 2 (sentinel literal) is untouched and retained. Removed exemption entries only for the two migrated call sites; every other function-scoped exemption is preserved. Guard exits 0. Refs #3882 * refactor(#3882): delegate the snapshot phase-dir scan to its owner buildAllPhaseDirNamesField duplicated listAllPhaseDirs's own readdirSync + directory-filter + absent/unreadable handling — the 'one implementation per rule' defect ADR-3473 SS8.3 names, introduced by this branch's own #3882 work. Delegate to listAllPhaseDirs and re-apply the field's existing lexicographic sort on top, since W007's observable order must not change. Refs #3882 * docs(#3882): document the sentinel axis and the enumeration consolidation Records listAllPhaseDirs in the Phase Locator glossary entry, and the fact that the owner already answers the all-milestones sentinel-free question when called without a cwd -- the call collectCalibrationSamples was missing. Also notes that buildAllPhaseDirNamesField now delegates rather than carrying a second readdir, and that exactly one readdirSync over the phases directory remains across the two modules. Refs #3882 * test(#3882): close review findings — real order proof, unreadable coverage, collision fixtures Refs #3882 * chore(#3882): backfill changeset PR number Refs #3882 --------- Co-authored-by: sim <sim@local>
GSD Core
Git. Ship. Done.
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A light-weight meta-prompting, context engineering, and spec-driven development system for Claude Code, OpenCode, Antigravity CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more.
What is GSD Core
GSD Core is a context-engineering and spec-driven development framework that drives AI coding agents (Claude Code, Codex, Antigravity CLI, Kimi CLI, Copilot, Cursor, and more) through a disciplined phase loop. It solves context rot — the quality degradation that accumulates as an AI fills its context window — by running all heavy research, planning, and execution work in fresh-context subagents while keeping your main session lean.
How it works
Each milestone repeats the same five-step loop, one phase at a time:
- Discuss — capture implementation decisions before anything is planned
- Plan — research, decompose, and verify the plan fits a fresh context window
- Execute — run plans in parallel waves; each executor starts with a clean 200k-token context
- Verify — walk through what was built; diagnose and fix before declaring done
- Ship — create the PR, archive the phase, repeat for the next one
Quickstart
npx @opengsd/gsd-core@latest
The installer prompts for your runtime (Claude Code, OpenCode, Antigravity CLI, Kimi CLI, Kilo, Codex, Copilot, Cursor, Windsurf, and more) and whether to install globally or locally. The installer is required for cross-runtime compatibility — do not copy files from agents/ or commands/ directly.
On another runtime or without Node.js? See Install on your runtime.
Once installed, start a new project or onboard an existing repo:
/gsd-new-project # greenfield project
/gsd-onboard # existing codebase
New here? Follow Your first project for a guided walkthrough from install to first shipped phase, or Onboarding an existing codebase for brownfield setup.
Documentation
What's new in 1.7.0 → docs/whats-new-1.7.0.md
Tutorials — learning by doing:
How-to guides — task-focused recipes:
Reference — authoritative facts:
Explanation — concepts and design decisions:
Full index: docs/README.md. Other languages: 日本語 · 한국어 · Português · 简体中文.
Why it works
Most AI-coding setups fail at scale because context bloat silently degrades output quality, there is no shared memory between sessions, and nothing verifies that code actually works. GSD Core solves all three: heavy work runs in fresh subagents, structured artifacts like STATE.md and CONTEXT.md survive session boundaries, and the verify step walks through what was built and generates fix plans before a phase is declared done. See docs/explanation/context-engineering.md for the full reasoning.
Troubleshooting? See docs/how-to/recover-and-troubleshoot.md.
Community
| Project | Platform |
|---|---|
| gsd-opencode | Original OpenCode port |
| Discord | Community support |
Star History
License
MIT License. See LICENSE for details.
Claude Code is powerful. GSD Core makes it reliable.