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* test(#3707): failing-first coverage for reverting the fence-shortfall fold shield Pins the post-revert contract: a phase whose only gap is a fence shortfall must degrade the fold and withhold the milestone percentages, like every other gap class. Five of the eight rows are CONTROLS that pass before the change, and they carry more weight than the failing row. The failure mode of this revert is degrading TOO MUCH: a revert that sets foldScope outside the headingsSeen > 0 branch would withhold every percentage in the project, and only the no-gap control catches that. Another control catches a revert that collapses the two scopes into one and loses the distinction between what a phase reports and what the fold folds -- uat.scope must stay TRUNCATED for every gap either way, which it already is. The row that pinned the shielded behavior is rewritten rather than deleted. Deleting a test because the behavior it asserts is being reversed leaves the reversal unguarded. * fix(#3707): degrade the fold for every UAT gap class, reverting the fence-shortfall shield Maintainer decision. The two orthogonal engines split on this during #3707 and neither filed it as blocking, so it shipped in the shape the engine that raised the objection endorsed after verifying seven fixtures. The call has now gone the other way, restoring the fail-safe direction chosen twice already on this issue. The shield exempted one gap class from the fold's teeth. It could not do that safely: shortfallBlocks is a single tally incremented at exactly one site and spans BOTH a harmless fenced documentation sample AND a genuinely fence-straddled result: blocked row. Exempting it therefore could not exempt only the harmless case -- it also published a milestone percentage over a real, unread outstanding row. SCOPE.TRUNCATED means the scan could not SEE part of the evidence, which is exactly that case. scope and foldScope now agree: every gap class degrades both. The accepted over-report documented in uat.cts is unchanged and still documented there; what changed is only that it no longer buys an exemption from the fold. The comment block above it argued FOR the shield and is rewritten, because a comment defending behavior the code no longer has is worse than no comment. shortfallBlocks leaves this function's destructure but is untouched upstream, where audit-uat still consumes it. * fix(#3707): correct the caller comment, add the changeset, and name what the order tests guard Review found a SECOND comment still documenting the removed shield -- the caller's, beside the worstScope fold, stating that foldScope differs from scope for exactly one case which must not raise phase_scope_degraded or withhold the milestone's percentages. That is now the opposite of what the code does. I rewrote the buildUatRows comment in the previous commit and asserted in its message that a comment defending behavior the code no longer has is worse than no comment, then left exactly that one standing a few hundred lines away. The change had no changeset. It is user-visible: a milestone's percentage goes from published to withheld whenever any phase has a fence-shortfall-only gap. PR gates hard-fail a user-facing code diff without one. The two scopes are now identical at every return site. They are NOT collapsed -- that would change the return shape and the caller on what is meant to be a one-condition revert, and the seam is worth keeping if the distinction is ever wanted again -- but the declaration now says plainly that they agree by decision rather than by accident, so a reader does not have to re-derive it. The two order-independence tests were renamed. foldScope is monotonic with no reset path, so file order is structurally irrelevant and those rows could never have failed for the ordering reason their names promised. They do guard something real -- a multi-file phase degrading when any one file has a shortfall-only gap -- so they now say that instead. * test(#3707): failing-first coverage for the lone-CR UAT false-clean The parser splits on newline only, and the heading tokenizer agrees with it, so a lone carriage return is not a line boundary anywhere in it. CommonMark treats a lone CR as a line ending, so such a row renders to a human reader while being invisible to BOTH sides of the parser's symmetry invariant: no item, no shortfall, no headingsSeen. A phase hiding a result: blocked row this way reports 100 percent with zero diagnostics. Found by the security review of the fold-shield revert. It is the one false-clean class that revert does not reach, and it is the same bug class this issue exists to fix -- an unreadable row reported as clean. Nine rows. The LF control is what proves this is a separator defect rather than a content defect: identical bodies, one separator apart, and only one of them hides the row. CRLF and CR-inside-a-fence controls guard the coming normalization against double-counting or tearing content that legitimately contains a carriage return. Two further manifestations turned up while writing them: a leading CR breaks column-0 anchoring of the first heading, and an all-CR document flags a shortfall it cannot attribute to any row. * fix(#3707): treat a lone carriage return as a line ending in the UAT parser A lone CR was not a line boundary anywhere in the parser -- it split on newline only, and the heading tokenizer agreed with it. CommonMark treats a lone CR as a line ending, so such a row rendered to a human reader while being invisible to BOTH sides of the parser's symmetry invariant: no item, no shortfall, no headingsSeen. A phase hiding a result: blocked row that way reported 100 percent with zero diagnostics. Line endings are now normalized once at document ingress -- CRLF and lone CR both to newline -- at the two independent entry points, rather than teaching each split site about CR. Every downstream scan, offset and span therefore reads one convention. That single-frame property is deliberate: this issue already cost a HIGH when two scans read the same document through different frames. MY OWN END-TO-END TEST WAS WRONG and is replaced rather than weakened. It asserted that a lone-CR document must withhold its percentage, which reasons from the pre-fix symptom: after the fix the row is not hidden, it is surfaced, and this module deliberately keeps visible outstanding UAT work separate from completion percentages -- only unreadable evidence degrades scope. The success of the fix is what made the assertion false. The implementing agent refused to satisfy both it and the architecture and asked instead of bending either; it was right. What replaces it is a stronger contract: a lone-CR document and its LF twin, built from one source, must produce identical audit output -- scope, percent, every unresolved row by identity, and the diagnostic set. That is what 'a line-ending convention must not change what the audit reports' actually means, and it carries a non-vacuity check so it cannot pass with both sides empty. shortfallBlocks keeps being returned, now documented as currently unconsumed. An earlier reviewer told me audit-uat still consumed it and I passed that on as an instruction; it was wrong, and it was caught by checking rather than by me. * fix(#3707): normalize at the document read boundary, not at two call sites The lone-CR fix was half-applied and both review engines caught it independently. cmdAuditUat has four document ingresses, not the two I normalized: VERIFICATION.md and deferred-items.md still handed raw text to newline-only splitters, and the frontmatter extract in the UAT loop read raw content while its parser read normalized -- one audit entry mixing the two frames the fix exists to unify. Measured: a phase written twice from one source gave total_files 2 / total_items 4 under LF and results [] / total_items 0 under lone CR, with zero diagnostics. Normalizing two call sites and declaring it done is exactly why two were missed, so this moves it to the read boundary: every document now enters through a helper that normalizes, in audit-uat, in planning-inspect's readDocument, and in the shared verification-status read. Future parsers downstream get normalized text by construction rather than because someone remembered. That last seam also fixes an under-reporting case of the same root: a lone-CR VERIFICATION.md saying status: passed was read as missing, telling the user a verify step that had completed never ran. The parity test's load-bearing assertion is now marked as such. Four of its five equality checks still pass with the bug present -- only the unresolved-row identity differs -- so trimming that one as redundant would make the row vacuous. Second changeset added: the CR fix is user-visible independently of the fold revert, and one fragment covering both would have described neither. * test(#3707): failing-first coverage for the U+2028 and duplicate-result false-cleans Two more of the same class, both found by the security review of this branch and both reproduced before writing a line. normalizeLineEndings folds only carriage returns, but a JS /m anchor also treats U+2028 and U+2029 as line terminators while split on newline does not. That is the identical asymmetry the carriage-return bug exploited, one separator over, and worse in one respect: these are not CommonMark line endings, so a reader still sees the column-0 result: blocked that the tool discards. Measured: a scalar-internal result: pass placed after U+2028 wins over the real blocked line and the row disappears with no gap raised. Separately, and independent of any separator, a block with two column-0 result: lines resolves to the first with no ambiguity signalled. Prepending result: pass to a block therefore deletes an outstanding row silently; reversing the order surfaces it. Order deciding meaning is the defect, so the pair of rows pins the contract as ambiguity-is-a-gap rather than last-one-wins, leaving the fix room to implement the gap sensibly. Four controls: an ordinary marker in the same position (proving separator not content), legitimate U+2028 inside prose that must not be torn, a single result line, and a result line inside a fence that must not count as a second occurrence. * fix(#3707): scan result lines by split, not by a multiline anchor Two more false-cleans from the security review, both closed by the same change. A JS /m anchor treats U+2028 and U+2029 as line terminators while split on newline does not. A scalar-internal result: pass placed after one of those separators therefore matched as a line start and beat the real column-0 result: blocked, and the row vanished at 100 percent with no gap. Worse than the carriage-return case in one respect: these are not CommonMark line endings, so a reader still saw the blocked row the tool discarded. Separately, the non-global match returned the leftmost hit, so a block with two column-0 result: lines silently resolved to the first. Prepending result: pass deleted an outstanding row; reversing the order surfaced it. Order deciding meaning was the defect. Both close by scanning lines produced by split rather than by anchoring a regex inside the whole document: each line is tested on its own, and a count other than exactly one is reported as a parse gap instead of resolved to either candidate. I asked for U+2028 to be folded in normalizeLineEndings and that was wrong. Folding is length-preserving, so it would have made the U+2028 fixture byte-identical to the genuine two-result-line fixture -- while one requires a confident item and the other requires an ambiguity gap. No implementation can satisfy both once the distinguishing character is erased. The agent proved that and deviated rather than forcing it, which is why normalizeLineEndings still folds only carriage returns, now with a comment saying why. * fix(#3707): bound the ambiguity scan at the next heading-shaped line The split-based result scan regressed four pre-existing #3078/#3707 guards, each off by exactly one gap. My diagnosis was wrong. I read the off-by-one as double counting -- zero-result blocks taking both the new path and the pre-existing one -- and said to change the ambiguity condition from not-equal-one to greater-than-one. The agent checked and refused: the zero path was never duplicated. The real cause is double ATTRIBUTION. A block is sliced to the next TOKENIZED heading, so when the next row is untokenized -- hidden by a straddling fence, or indented and already counted by the shortfall scan -- that row's own result: line is absorbed into the previous block. The scan then saw two result lines across what are really two rows and raised a second, redundant gap on top of the one already counted elsewhere. Had the greater-than-one change gone in, the counts would have matched while the double attribution stayed. That is the compensating-adjustment failure I had asked it to refuse, and it did. The scan is now bounded at the first following heading-shaped line, either indent class, so a genuine same-block ambiguity is untouched while spillover from a row counted elsewhere is excluded. * fix(#3707): keep the U+2028 immunity, revert the ambiguity detection The ambiguity half of this change regressed the suite twice and is coming out. Attempt one double-attributed: a block is sliced to the next TOKENIZED heading, so when the real next row is untokenized its result: line was absorbed into the previous block and raised a second gap on a row already counted elsewhere. Four guards broke. Attempt two bounded the scan at the next heading-shaped line and broke thirty. An indented ### N. inside a block scalar is legitimate scalar CONTENT, not a heading, and truncating there defeats every #3078 guard that exists to stop scalar bodies being read as rows. Telling a genuinely hidden indented row apart from indented scalar text is a classification countUnattributedIndentedRows already owns; a raw regex does not have that information. What survives is the half that is sound and was never implicated in either regression: the result scan tests each line produced by split rather than anchoring a regex with the multiline flag over the whole block. split never treats U+2028 or U+2029 as a delimiter, so those separators can no longer manufacture a line start and steal a row. Everything else returns to first-match-wins, byte-identical to origin/next. The two tests pinning ambiguity-as-a-gap are removed with it, since the contract is no longer implemented here. The defect they described is real, pre-existing and independent of any separator -- result: pass before result: blocked silently deletes an outstanding row -- and it needs its own change with a scalar-aware counter rather than being wedged into a branch already carrying three fixes. * fix(#3707): correct the shared-seam rationale and restore U+2028 trailing text The revert left a stale rationale in core-utils, justifying the decision not to fold U+2028 by claiming uat.cts must tell a fake line start apart from a real second column-0 result: declaration that gets flagged as ambiguous. Nothing flags ambiguity any more; that behavior was reverted and the same file says so a few lines away. The decision is still right, the stated reason was false. This is the third stale comment this branch has shipped and had to fix, and the worst placed of them: core-utils is a shared leaf that every future document consumer will read for guidance. Rewritten to the true reason -- the scan tests each split line individually rather than anchoring over the block, so an exotic separator cannot manufacture a line start and folding is unnecessary. Also a real behavior delta I had not noticed. Dropping the multiline flag left the pattern's trailing .*$ in place, and dot never matches U+2028, so a genuine column-0 result: blocked whose TRAILING text contained one stopped parsing entirely -- a visible parse gap rather than a false clean, so fail-safe, but a regression against origin/next that nothing pinned. The trailing portion now matches any character and a test pins it by identity against its plain-LF twin. Plus the JSDoc orphaned when normalizeLineEndings moved to core-utils, and the changeset, which described neither the separator fix nor planning-inspect surfacing lone-CR rows. * fix(#3707): harden the acceptance gate, which had both halves of the same bug uat-predicate is a SECOND, independent UAT parser, and it is the one that decides phase uat-passed. It read raw bytes and anchored a multiline regex over unsplit text -- exactly the two defects this branch closed one module away in uat.cts. The consequence is worse than the audit surface it mirrors. Measured on identical bytes: a U+2028 scalar injection made the gate return passed true while planning inspect reported the same row as blocked and outstanding. The hardened surface and the gate disagreed, and the gate was the permissive one -- so a phase could be accepted over a row the audit could see and the gate could not. Both raw reads now go through the shared normalize seam and both scans test lines produced by split rather than anchoring over the document. First-match-wins, matching uat.cts; no ambiguity counting is reintroduced. Tests assert the AGREEMENT between the two surfaces rather than each separately, because divergence is the defect. Also finishes the same root cause one module over: phase complete's advisory pre-scan read raw bytes, so a lone-CR VERIFICATION.md lost its human_needed or gaps_found warning -- the fix verification.cts already got on this branch. And narrows the core-utils rationale I reworded last commit, which claimed consumers already avoid multiline anchors. uat.cts still has five over unsplit text. That is the fourth comment on this branch to assert something the code does not do, so it now states only what is true of core-utils itself. * fix(#3707): give structure and attribution different line frames, normalize the close audit Two more from review, and the first was a regression I introduced one commit earlier. Converting the gate's heading scan to split-then-match removed a detection origin/next had: a ### N. heading delimited by U+2028 was found by the old multiline scan and was not found after. So hardening the result scan quietly weakened the heading scan, and the gate stopped blocking on rows origin/next blocked -- the permissive direction, on the surface that decides acceptance. The insight I had missed is that the two scans need DIFFERENT frames. Heading detection is structure: there is no distinction to preserve, so it splits on newline or either exotic separator and finds a heading however it is delimited. The result scan is attribution: the newline-only frame is exactly what stops a scalar-internal result: from being read as a column-0 line, so it stays. One frame applied uniformly was the error. Second, a THIRD unnormalized parser family: the milestone-close audit read every artifact raw. A lone-CR VERIFICATION.md degraded to status unknown and was skipped, and deferred entries vanished outright -- measured as three items requiring decisions under LF and one under CR, on identical bytes. All nine scanner reads now normalize; six of them had the identical defect beyond the three review named. The acknowledge path stays deliberately raw, since it splices by byte offset, and now says so. Also pins the cross-newline result: divergence, and replaces three raw U+2028 literals in test source with escapes. A raw separator in a fixture is one formatter away from becoming an ordinary-character control that still passes -- vacuous in the only test pinning the separator fix. * fix(#3707): share one frame between the acknowledge writer and the audit reader Normalizing the audit scanners left the writer and the reader on different frames. cmdAuditAcknowledge derives its stored snapshot values from raw content -- correct for the SPLICE, which rewrites by byte offset -- but scanUatGaps and scanContextQuestions now recompute those same values from normalized content. For a lone-CR artifact the two can never match, so an acknowledgement never suppresses its item and it resurfaces on every audit: acknowledge became a silent no-op. Fail-safe in direction, since the item stays visible rather than being wrongly suppressed, but it is the writer and reader disagreeing about what a line is -- the exact class this branch exists to eliminate, and the fourth instance of it here. The derive functions now read a normalized copy while the splice keeps raw bytes and raw offsets, so both sides share one frame and the byte-offset rewrite is untouched. Round trip pinned for lone-CR and LF, with an existing LF marker asserted still recognised so the change cannot silently invalidate acknowledgements already in users' files. Also tightens an assertion that pinned this branch's own heading fix with a proxy: notStrictEqual against 'passed' also passes on 'pass', which IS a passing token, so it could not have caught a regression attributing a passing result to the recovered heading. It now pins the exact token. * chore(#3707): backfill changeset pr numbers Both fragments still carried the pr: 0 placeholder, which failed changeset-lint and docs-lint on PR 3903. The review had flagged the backfill as pending and I opened the PR without doing it. --------- 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.