092d9256b8
* test(#4748): pin the letter-axis defect at the seven shell sites outside #4660's six
Extends tests/nsegment-phase-grammar.test.cjs one class over: for each of the
seven sites the live shell lines are read off disk by anchor and executed in
bash against a letter-suffixed fixture. The four `$((10#$PHASE_INT))` split
sites must yield PHASE_N without a shell error for `03A` / `12A` / `3A` /
`03A.1.2` and the commit-scope ERE they build must match both `feat(3A-01):`
and `feat(03A-1):`; the review-file lookup must bind init's `padded_phase`
rather than re-pad in shell; the `--from`/`--to`/`--only` and
plan-review-convergence extractions must return `12A` / `23A.1.2` (and
`23.1.2`) whole; the legacy normalizer must pad `3A` to `03A` and must not
mangle an already-padded `08`. Every pre-existing shape (`06`, `08.5`,
`23.1.2`, `36.14`) is a regression control.
tests/init.test.cjs asserts `init execute-phase` emits `padded_phase` for a
directory-backed `03A`, a ROADMAP-only `4B` (→ `04B`), the existing ROADMAP
fallback `1` (→ `01`), and `null` when the phase is not found.
Negative control against the unfixed tree: 41 failures in the grammar file,
exactly the "(fails before the fix)" cases and the three derived from them
(scope ERE, three-flag extraction, the `08` octal trap); 2 in init.test.cjs,
both the new assertions. Every regression control already green.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* fix(#4748): carry a letter-suffixed phase id through the seven shell sites that aborted or truncated it
The canonical phase-number grammar (src/phase-id.cts) is digits, an optional
uppercase letter, then dotted segments — `12A`, `3A`, `23A.1.2` are documented
shapes that `init`, `phase-id.cts` and `phase remove` renumbering already
round-trip. Seven shell sites in shipped workflows and references still
assumed digits-and-dots. Four classes, one fix each:
Class 1 — `PHASE_INT=${PHASE_NUMBER%%.*}; $((10#$PHASE_INT))` (execute-phase.md
×2, completion-reconciliation.md, tdd.md). The post-#4619 split stops at the
first DOT, so on `03A` the "integer" is `03A` and bash aborts with `value too
great for base`. Split at the first NON-DIGIT instead (`%%[!0-9]*`): the
integer half is a pure digit run, and the letter rides along in the rest the
way the dotted fraction already did — `03A.1.2` → PHASE_N `3A\.1\.2`, so the
#4003 zero-pad-tolerant scope ERE matches both `feat(3A-01):` and
`feat(03A-1):`. Byte-identical output for every id that worked before.
Class 2 — `PADDED=$(printf "%02d" "${PHASE_NUMBER}")` before the REVIEW.md
lookup (execute-phase.md). `printf` cannot pad a letter id (prints `03`,
exits 1) — and cannot even re-pad an already-padded `08`, which bash reads as
an invalid octal and prints as `00`, so the lookup resolved phases 08 and 09
to `00-REVIEW.md` today. The disk path hands the workflow the directory's
padded number but the ROADMAP fallback hands it the heading's bare one, which
is why the re-pad existed. `cmdInitExecutePhase` now emits `padded_phase`
through `normalizePhaseName`, exactly as the plan-phase and code-review inits
do, and the workflow binds `{padded_phase}` instead of re-deriving.
Class 3 — `grep -oE '[0-9]+\.?[0-9]*'` (autonomous.md `--from`/`--to`/`--only`,
plan-review-convergence.md). Stops at the letter, so `--from 12A` ran from
phase 12 with no error. Now the canonical ERE `[0-9]+[A-Z]?(\.[0-9]+)*`, which
also closes the single-segment dot-axis gap the same shape carried (`23.1.2`
→ `23.1`, #4568's class in a spelling neither lint saw).
Class 4 — the legacy manual normalizer (phase-argument-parsing.md, reached
from mvp-phase.md). Its two branches (`^[0-9]+$`, `^[0-9]+\.[0-9]+$`) left
`12A` unpadded and never padded `3A` to the `03A` a directory carries; its
integer branch also hit the same `printf` octal trap on `08`. One branch for
the whole canonical token now, padding the digit run via `$((10#…))`.
Whether this legacy surface should instead be retired in favour of `init`'s
normalization is the maintainer call the issue names; extending it keeps the
documented contract true either way.
Driven end to end: `init execute-phase 3A` on a fixture with a
`03A-letter-variant/` directory emits `phase_number: "03A"` and now
`padded_phase: "03A"`; on a ROADMAP-only `### Phase 4B:` it emits `"4B"` /
`"04B"`. The issue's own evidence line claimed `padded_phase` was already in
the execute-phase init output — it was not; that key is emitted by the
code-review / plan-phase inits, which is where the claim was read from.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* chore(#4634): extend lint-phase-id-drift with three ratchets for letter-hostile phase-id consumers
The rules that landed with #4619, #4568 and #4660 police grammar MIRRORS —
regexes that describe a phase id. The #4748 sites are CONSUMERS of one, and
every existing rule reported clean on them: the shell-arithmetic rule's
`_INT` escape trusts a NAME the dot-only split did not earn on `03A`; the
`[0-9]+\.?[0-9]*` shape is neither the bounded form the single-segment rule
bans nor the unbounded form the letterless rule inspects; and nothing looked
at `printf "%02d"` at all. Three narrow additions, one per shape:
- findDotOnlyIntegerSplitDrift — `X_INT=${<phase-var>%%.*}`; the safe split
is `%%[!0-9]*`. Keys on the SOURCE variable being phase-carrying.
- findLooseDottedPhaseRegexDrift — `[0-9]+\.?[0-9]*` / `\d+\.?\d*` on a
phase-carrying line; the canonical form is `[0-9]+[A-Z]?(\.[0-9]+)*`.
Disjoint from the two sibling regex rules by construction.
- findShellPhasePrintfPadDrift — `printf "%0Nd" …` whose arguments name a
phase-carrying, non-`_INT` variable; a pad of an `_INT` via `$((10#…))`
and a `{padded_phase}` binding are the sanctioned shapes.
Same `<!-- phase-id-owner: … -->` sanction, same scan roots as their nearest
sibling (shell idioms over workflows + references, the regex shape over
workflows + references + agents), same documented limit of a per-line
textual scan. The post-#4619 comment that described the `_INT` convention
as proven by `%%.*` is corrected to name the digit-run split. Confirmed
against the base commit: each rule fires on exactly its own unfixed sites
(2+1+1, 3+1, 1+1) and zero violations remain on the fixed tree.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* docs(#4748): add Fixed changeset
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* chore(#4748): refresh the compact-content benchmark baseline and acknowledge emitted growth
The three top-level workflow files below grew by the letter-aware split, the
canonical extraction ERE, the `{padded_phase}` binding, and the comment lines
that name the grammar each site now honours. The committed compact-content
benchmark moved with them; refreshed with `benchmark-compact-content.cjs
--write` (aggregate reduction 15.47% -> 15.45%).
Emitted-Drift-Ack-Growth: execute-phase.md — #4748: first-non-digit PHASE_INT split at the plan-selection and TDD-gate sites, `{padded_phase}` binding at the REVIEW.md lookup, and the comments naming why (482 bytes)
Emitted-Drift-Ack-Growth: autonomous.md — #4748: canonical `[0-9]+[A-Z]?(\.[0-9]+)*` at the --from/--to/--only extractions plus one comment naming the grammar (249 bytes)
Emitted-Drift-Ack-Growth: plan-review-convergence.md — #4748: canonical `[0-9]+[A-Z]?(\.[0-9]+)*` at the phase extraction plus one comment naming the grammar (160 bytes)
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* fix(#4748): name padded_phase in execute-phase.md's init parse list
A `{field}` token inside a workflow bash block is substituted from the init
JSON only for fields the workflow tells the model to parse. `phase_number`
is on that list; `padded_phase` was not, so the `PADDED="{padded_phase}"`
binding at the review lookup would have been a literal — for every phase,
not only letter ones. Found by the pre-file adversarial review (claim 2, the
author's own named suspicion); the test now asserts the parse list carries
the field beside `phase_number`.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* chore(#4634): key the dot-only split rule on its source and widen the printf rule to any %d form
Two false negatives from the pre-file adversarial review of the three #4748
ratchets: `PHASE_PREFIX=${PHASE_NUMBER%%.*}` escaped the split rule because
the destination did not end in `_INT` (the defect is the split, not the
name it lands in), and `printf '%02d'` / `printf "%2d"` escaped the printf
rule because it required double quotes and the zero flag (`%d` cannot parse
a letter id under any width). Both rules now key on the phase-carrying
SOURCE alone; base-site firing counts are unchanged (2+1+1, 1+1) and the
fixed tree stays at zero. The `[[:digit:]]` spelling and the `/phase/i`
heuristic remain the sibling rules' documented limits.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* chore(#4748): refresh the compact-content benchmark baseline after the parse-list edit
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* test(#4748): compose init's emitted padded_phase through the live REVIEW.md lookup
The Class 2 site is a `{padded_phase}` template token, which no test can
execute as written. This substitutes the value init emits
(`normalizePhaseName`) into the three live lookup lines and runs them
against a fixture, so the emitted value, the binding, the path construction
and the status extraction are exercised together — `03A-REVIEW.md` and
`08-REVIEW.md` each resolve to their own status. Suggested by the resumed
adversarial review pass (claim C).
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* test(#4748): move the #4619 and #4003 source-parity pins to the letter-safe split
tests/execute-phase-decimal-arithmetic.test.cjs and
tests/safe-resume-gate-anchoring.test.cjs pin the four Class 1 sites'
snippet byte-for-byte, so the first-non-digit split reddened both in the
whole-suite run (scripts/ci-test-scope.cjs does not select either file for
a workflow edit — the scoped run was green). The pinned snippet is now the
shipped one, and the behavioural half of the #4619 file gains the letter
case (`03A` → `3A`, `23A.1.2` → `23A\.1\.2`) beside its decimal cases.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* chore(#4634): key the dot-only split rule on the _INT destination again, tolerating the quoted spelling
Keying on the source alone (the previous commit's widening, from a review
probe) flags `PARENT_PHASE="${PHASE_NUMBER%%.*}"` in
gap-closure-artifacts.md — a correct derivation that wants everything
before the first dot, letter included. The defect this rule polices is a
dot split INTO the name the shell-arithmetic rule trusts as an integer, so
`_INT` is the discriminator on purpose; the quoted spelling that site uses
is now tolerated so the same shape into an `_INT` cannot hide behind it.
Base-site firing unchanged (2+1+1), zero on the fixed tree, and the
parent-phase line is pinned as a silent case.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* test(#4748): use t.after() for the composition test's fixture cleanup
CONTRIBUTING forbids try/finally inside a test body; the per-test cleanup
form is `t.after(() => cleanup(dir))`. Flagged by the filing driver's
test-ruleset gate before the PR was created.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
* chore(#4748): set changeset fragment pr to 4768
* chore(#4748): refresh the compact-content benchmark baseline after rebasing onto next
Regenerated with `node scripts/benchmark-compact-content.cjs --write` on the
rebased tree (base 0d6bf19bf); `--check` confirms it matches the live recompute.
Only the execute-phase split and the aggregate totals differ from next's copy.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017cjzdZtYjcBAa3Lqh2VrLK
---------
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
Co-authored-by: Tom Boucher <trekkie@nomorestars.com>
GSD Core
Git. Ship. Done.
English · Português · 简体中文 · 日本語 · 한국어
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.