5 Commits

Author	SHA1	Message	Date
Tom Boucher	0e6fa2e2cf	enhance(#3118): close the dead injectables and the shell projection follow-on — Wave 4 (#3124) ... * test(#3118): failing-first coverage for the dead injectables and the shell projection Adds the counter-tests Wave 4 closes against, before any fix: - antigravityWatermark had zero test references. The four existing tests that look like watermark coverage hand the fallback a literal mark and never call the producer, so nothing pinned whether a real run's mark is correct. Covers all six branches plus the non-object cache classes. - Pins the fail-open: a transcript read that throws reports lines:0, indistinguishable from a genuinely empty transcript, and the consumer then replays a previous run's review as this run's. - Pins the export-line escaping across the repair, persist and win32 bash lanes, including the parity assertion that they must not diverge. - sliceCurrentPositionSection: empty-vs-absent, fenced heading, second occurrence, H3, CRLF. - Proves deps.progressProvider is inert by supplying a throwing stub to all ten transition intents. Verification through the remote runner only. Refs #3118 * fix(#3118): distinguish an unreadable transcript from an empty one antigravityWatermark's final read can throw on a transcript that indisputably exists. It returned lines:0, which is the same value a genuinely empty transcript produces, so the caller could not tell the two apart. antigravityTranscriptFallback derives its skip from that count. A mark of {convId:'c1', lines:0} for a conversation that pre-dates the run makes it skip nothing and return the last PLANNER_RESPONSE in a transcript written before this run started — a previous review presented as this one's, which is exactly what the function's own 'never stale' docstring promises cannot happen. The unreadable case now sets unreadable:true and the fallback declines for a same-conv-id unreadable mark. An absent or empty transcript is untouched: those genuinely have zero prior lines. * fix(#3118): escape the export line for the file it lands in, not the echo Three lanes emit export PATH="<dir>:$PATH". repair escaped it with escapePosixDoubleQuoted; persist and the win32 Git Bash lane escaped it with escapeSingleQuotedShellLiteral instead. The single-quoting is correct for the echo, so nothing runs when the user pastes the command. But the bytes appended to ~/.bashrc are the export line itself, and inside double quotes in an rc file a $(...) or a backtick in the directory name is command substitution that runs on every new shell. Those characters are legal in a path on both POSIX and Windows, so the path was reachable. projectPathExportLine is now the single source of that line and escapes for its final rc-file context; each lane still applies its own transport escaping on top. fish keeps the single-quote escaper — its value really does stay single-quoted. The cmd.exe lane interpolated into a cmd double-quoted string with no cmd-level escaping, so a quote closed the region and &cmd& ran. A quote is reserved on Windows and cannot appear in a real path, so there is no correct command to suggest: the win32 lanes now fail closed for one. Metacharacter-free paths render byte-identically on every lane. * fix(#3118): drop a stray carriage return and a deps field nobody reads locateCurrentPosition subtracted a fixed one byte to exclude the newline before the next heading, which assumes LF. On a CRLF document the slice kept an unpaired trailing carriage return. It now walks back over the newline and over a preceding carriage return if there is one. StateTransitionDeps also required a progressProvider that 33 sites supplied and no site ever called. A required field nothing reads widens the module's interface without changing its implementation, which is the shape epic #3051 cites as its reason for refusing blanket injection. Removed along with the ProgressRecord alias that existed only as its return type; state-document.cts's unrelated interface of the same name is untouched. * fix(#3118): stop an empty span duplicating bytes, and name the empty results Three findings from the isolated review pass. locateCurrentPosition could return end < start when the section was empty and the next heading followed with no blank line between. Every mutator splices with slice(0,start) + body + slice(end), so an inverted span duplicated the region between them — a blank line silently inserted into STATE.md on every transition, two bytes on CRLF. The span is now clamped, and an empty section is a zero-length span, which is what it always meant. The win32 fail-closed path left the installer printing 'Add it with one of:' with nothing under it. An empty shellActions folded two different facts together, so projectPathActionProjection now carries a frozen PATH_ACTION_REASON and the installer branches on it. Two empty results with different causes staying distinguishable is the subject of the epic this belongs to. fish_add_path parses a leading dash as an option, so a directory named -v printed 'No paths to add' instead of being added. Verified against fish 4.8.1: the end-of-options separator fixes it. Replaces the console-prose test the second fix first arrived with — a regex over captured stdout is what CONTRIBUTING prohibits, and the typed reason is the surface it asks for instead. * fix(#3118): escape TOML control characters, and stop a test name overstating Five findings from the two review axes. escapeTomlDoubleQuotedString escaped only backslash and quote. TOML basic strings also require U+0000-U+0008, U+000A-U+001F and U+007F to be escaped, so a value carrying a raw newline or NUL wrote a config.toml no parser accepts — rejecting the whole file, not just that value. Four of its call sites write real config. Tab stays raw; the grammar exempts it. The byte-identity test claimed every lane was unchanged for an ordinary path, which is false: fish now takes the end-of-options separator on every path, not only hostile ones. Renamed, and the one intended delta now has its own named test instead of hiding inside a claim that read as broader than it was. Also: exact-equality assertions in place of substring checks that could pass on a subtly wrong escape, newline and null-byte cases for all five quoting primitives, and a temp dir registered with t.after so it is removed when an assertion fails. * docs(#3118): add the changeset fragments * fix(#3118): degrade instead of throwing on a null conversation cache A cache file whose whole content is the literal null — what a truncated or zeroed write leaves behind — made both antigravityWatermark and antigravityTranscriptFallback throw. JSON.parse('null') succeeds, so the try/catch wrapping the parse never fired, and resolveConvId then called hasOwnProperty on null. Both functions advertise the opposite; the existing test next to them is named 'a missing cache or transcript degrades to empty, never throws'. Parsing successfully is not the same fact as the payload being usable, and a guard that only wraps the parse cannot tell them apart. resolveConvId is now total for any non-object input, so one guard covers both callers. Caught by the null case in this wave's own cache matrix. * test(#3118): correct a stale fish expectation and a parity comparison The pre-existing 'POSIX persist mode escapes single quotes' test pinned fish_add_path without the end-of-options separator this wave adds, so it asserted behavior that is no longer correct. A repo-wide scan found one such hardcoded expectation; every other site derives its expectation from the projection. The new parity test compared the token from a POSIX path against the win32 lane, which posix-normalizes its input first — two different inputs, so the tokens differed for a reason that had nothing to do with the parity it claims to check. It now derives the win32 expectation from the same input the lane receives. * docs(#3118): reword a comment the injection scanner reads as an instruction The scanner pattern act\s+as\s+(?:a|an|the)\s+ carries no word boundary, so 'the same fact as the payload' matched on the tail of 'fact'. Reworded per the documented remedy for this collision. The missing boundary is a scanner defect rather than a prose problem — any contributor writing 'fact as the' trips it — but the pattern is gate plumbing, which the sibling epic owns, so it is surfaced rather than changed here. * chore(#3118): backfill changeset pr number to 3124 * chore(#3118): backfill changeset pr number to 3124 * fix(#2784): make the negation scan single-pass and index it correctly Three defects in the negation suppression added by #3127, all in one block, none of which had a test. The pair scan was verbs.some(nouns.some(...)) with a slice and a split per pair, so it grew cubically with clause length: 1.1ms before that PR and 8462ms after, on 800 verb+noun pairs in one clause. api-coverage's property test generates documents large enough to reach the runner's 600s file cap, which is why it hangs as 'fail 0, cancelled 1' rather than failing an assertion. Every (verb, noun) window is a subset of the single widest one, so one scan of that window answers the same question in a linear pass. Verified equivalent against the old predicate over 20,000 generated clauses. Both checks also subtracted clause.start from offsets that collectTerm- Matches already returns clause-local. The first clause on a line has start 0 so it worked there and nowhere else: later clauses went negative, and slice reads a negative index from the end, so suppression silently examined unrelated text. The comment claimed 'without any API integration' was suppressed. It is not — the qualifier sits outside the two-word lookback and the noun precedes the verb. Widening the window would trade a false positive that costs one declaration line for a false negative that slips a real integration past a blocking gate, so the behavior stands and the comment now says so. Pinned by a test. The qualifier sets were also rebuilt for every line of every document.	2026-08-06 23:57:05 -04:00
Tom Boucher	53ea8e0664	fix(#3057): make a guard's failure distinguishable from its benign result — Wave 1 (#3088) ... * fix(#3057): refuse the write when the duplicate scan cannot complete writeManifest documents itself as a fail-closed duplicate guard: if any existing manifest shares plan_id with a different, non-terminal job_id it must refuse, because dispatching again would duplicate the external job. It could not honour that. The scan reads every sibling manifest looking for the duplicate, and an unreadable or unparseable sibling was `continue`d past. If the corrupt file was the one holding the live duplicate, the scan found nothing and a duplicate external job dispatched. The asymmetry is what gives it away: a malformed TARGET refused with malformed_existing because clobbering is unacceptable, while a malformed SIBLING was skipped — yet siblings are the only thing the duplicate check reads. Adds a scan_incomplete verdict that refuses and names the offending file, so an operator can quarantine or repair it. Fail-closed alone would let one stale corrupt manifest wedge every dispatch for that planning dir permanently; naming the file is what makes refusing survivable. malformed_existing is untouched, so the target/sibling distinction stays visible. The docstring is updated — it previously stated a rule the function did not keep. memFs() gains an optional failReads map so these branches are reachable at all; they had zero coverage because the fake could not express a per-file read fault. The signature is additive and every existing caller is unchanged. The regression is proved by a pair, not a single test. A control writes a readable sibling holding a genuine non-terminal duplicate and asserts duplicate_plan_id, establishing the scenario is real; the regression then makes that same path unreadable and asserts scan_incomplete. A first draft of this test used a corrupt-JSON fixture containing no plan_id at all while its comment claimed otherwise — it duplicated the unparseable-sibling case and proved nothing, which is the defect class this phase exists to remove. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3057): make a guard's failure distinguishable from its benign result Wave 1 of the negative-space backfill: the branches where a guard that could not verify something reported the same value it reports when everything is fine. That indistinguishability is the defect; every fix here makes the two states tellable apart, and every test proves it with a pair — one for the failure, one for the benign case. A single test cannot establish that two states are distinguishable, which is the whole property being fixed. state.cts phaseInventoryProvider returned null for both a real disk-scan failure and a genuinely empty phases dir, so `state rebuild` could report success while phase-table reconciliation never ran. It now returns a discriminated result and the CLI surfaces phase_inventory_scan_failed plus a reason. The reason field turned out never to have been wired into the emitted JSON at all — it existed only as an internal variable — so a test could only assert on the operator-facing note. It is a real field now. state.cts treated an unreadable lock body the same as an empty one, applying the 1-second stealable floor. A lock we cannot read is not a lock we know is stale; an unreadable body is now held to the deadman ceiling like a live holder. verification.cts findStaleVerificationSummary returned null on any fs, scan or clock failure — meaning "not stale". It now returns a discriminated StaleCheckResult and the caller records that the check was indeterminate. git-base-branch resolveBaseBranch returned 'main' both when no candidate branch existed and when every git tier timed out. A diagnostics variant now reports whether the answer was verified, and the CLI writes an unverified-fallback note to stderr. The stdout contract five workflows parse is untouched. worktree-safety snapshotWorktreeInventory left exists:true when statSync threw, so a guard that could not check reported the worktree present; exists is now tri-state and a stat failure surfaces as an 'unverified' finding. planWorktreePrune reported 'no_worktrees' for a parse failure, which is not the same as an empty list — and it drives a prune. It now reports 'parse_failed'. Fixing the inventory change exposed a second fail-open in verify.cts: the validate-health consumer silently dropped findings whose kind it did not recognise, so the new kind would have vanished. That is closed too — worth noting that the survey enumerated producers of degraded verdicts, not consumers that discard them. worktree-base-ref and state-transition gain the distinguishing signal without changing what they do: headAbsenceVerified, and a phase-inventory scan meta. Whether those guards should ACT differently is a product question this change does not answer, and both are flagged rather than quietly settled. rescueSummaryArtifacts is left alone: rescuing on an uncertain cat-file is deliberate per #2556. It now has tests proving it, and a recorded negative finding — git cat-file -e returns 128 for both "absent from HEAD" and a fatal error, so "uncertain" and "certain-and-fine" are not separable at the git level. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * test(#3057): assert typed values, not rendered text Ten assertions in the rebuild CLI suite matched substrings of produced output — STATE.md body fields, a markdown table row, an audit-log heading, and JSON keys read as text. CONTRIBUTING prohibits that: if the code under test produces text, the test asserts on its structured surface instead. No production surface had to be built. Every one already existed and was already compiled into bin/lib: stateExtractField for body fields, parseMarkdownTable for the phase table, collectSection for the audit-log section, and result.data.log — already a typed RebuildLogEntry[]. The tests were matching rendered text sitting next to the structured data. One of those assertions was passing for the wrong reason. `stdout.includes ('rebuilt')` matched the JSON KEY name, not a value: the dry-run path emits `mutated` and the real path emits `rebuilt`, so it would have passed whether the value was true or false. It now asserts the value. external-job's refusal already had to name the offending file — that naming is why the fail-closed variant is survivable rather than a permanent wedge — but the tests proved it by substring of a prose message. The failure result now carries offendingPath as its own field and the tests assert it by value. The human message is unchanged; operators read it. Array membership is left alone. `phaseIds.includes('99')` and `result.updated.includes('Completed Phases')` are membership checks on real arrays, not text matching, and converting them would weaken nothing and clarify nothing. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * test(#3057): execute acquireStateLock instead of grepping its source The non-EEXIST lock test asserted on the TEXT of the built .cjs and never called acquireStateLock. It carried an allow-test-rule: architectural-invariant exemption to permit that. A source grep proves a literal is present in a file, not that the behaviour works — it is weaker than a liveness test, which at least runs the code, and it was the only coverage the fatal-errno path had. Replaced with tests that inject the errno through fs and assert what actually happens: a fatal EACCES propagates out of acquireStateLock with zero backoff sleeps, while EAGAIN/EINTR/EINVAL/EIO/ENOENT/ESTALE/EPERM/EBUSY retry once and succeed. The exemption is removed and its allowlist entry with it. One old assertion is deliberately not carried over: it checked the retryable errnos were expressed as a Set rather than an inline literal. That is a shape check with no runtime signature; the behavioural tests fail if the code reverts to the old inline check, which is the regression it was really guarding. The #3057 lock-body tests move into that same file rather than a new one, which is what lint-test-file-count asks for and puts every acquireStateLock test in one place. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3057): surface an indeterminate staleness check to its callers An isolated review caught an inconsistency inside this wave. Two of the three "add the distinguishing signal" fixes wire through to something a user sees: git base-branch writes an unverified-fallback diagnostic to stderr, and an unverifiable worktree surfaces as a W020 finding. The third set staleCheckIndeterminate on readVerificationStatus's result and nothing read it. A signal nobody consumes leaves the fail-open exactly as silent as before: the staleness check could fail and the operator saw precisely what they would see if the answer were genuinely "not stale". That is the defect this issue exists to remove, so it is not defensible as scaffolding when its two siblings in the same change already wire through. All five callers now surface it, each through the channel it already had rather than a mechanism imposed uniformly: phase complete adds it to its existing warnings array and, on the blocked path, as an additive note on the error text; init and roadmap carry it as a field on output they already emit; the UAT report carries it without ever gating passed/blockers; workstream inventory takes an injectable writeDiagnostic mirroring the git base-branch idiom, because its return shape had nowhere to hang a per-phase field without rippling the builder's types. The routing decision is unchanged everywhere. What changes is only that a caller and an operator can now tell a failed check from a completed one. That diagnostic carries structured meta rather than being asserted by regex — the default still writes only the human message to stderr, but tests assert phaseDir and reason by value. Two earlier assertions in this branch were converted the same way; this was the last raw-text assertion left. Also records a scope correction: the completePhaseCore guards now compare stateReplaceField's result to the body instead of testing truthiness, so a field whose substitution produced identical text no longer reports as updated. That is a real behaviour fix, not the signal-only change this file was described as carrying, and its tests cover both the changed and unchanged cases. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * test(#3057): bound two heavy subprocesses for a loaded bench, not an idle one The remote matrix surfaced three failures unrelated to this branch's changes. All were bad tests, and a re-run would have hidden every one of them. The reviewer-flags parse block bounded bash -> node -> a full gsd-tools cold start at 5 seconds. On a bench running thirty thousand tests in parallel that is not a hang, it is a busy machine. Raised to 30s, matching the convention sibling suites already use for script invocations, with a comment saying what the budget covers so nobody tightens it back. Two further copies of the same 5-second spawn in the same file had the identical defect and are raised too — they were not in the failure report, but they will be next time. The fragment-propagation test bounded npm run regen:derived — a full build plus eight generators, the heaviest subprocess in the suite — at five minutes, and node22 was killed near the end. The captured output proves it: every generator had written its files and gen:install-tree had emitted all fifteen runtimes before the kill. Raised to fifteen minutes. That failure read as `null !== 0`, which says nothing. status null means killed, not a non-zero exit, and the two want different responses: one is a timeout to size correctly, the other is a real build break. The assertion now distinguishes them and names the signal. Neither test's assertions were weakened and no retry was added. A retry here would suppress exactly the signal the timeout exists to produce. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * test(#3057): capture fd 1 through the mock tracker, not a raw reassignment The phase suite reported zero test results on both lanes while running for five and a half minutes and exiting 1. No assertion text, no stderr, four events for the whole file: enqueue, start, dequeue, complete. That shape is not a failing assertion — it is the runner being unable to read the child at all, because it parses its event stream from the child's stdout. The cause was the capture helper reassigning fs.writeSync directly. Proven rather than assumed: a standalone probe patched fs.writeSync and called process.stdout.write, and the interception fired only when fd 1 resolved to a FILE, not when it was a pipe. The remote runner captures the event stream to a file, so a helper that was invisible against a pipe swallowed the reporter's own output on the bench. That is also why the two sibling suites wired the same way in this change pass cleanly — they use the mock tracker, the seam io.test.cjs established for this exact function. The helper now uses t.mock.method with an explicit restore after each call, so teardown belongs to node:test rather than a second hand-rolled implementation, and the interception cannot outlive the one synchronous call it wraps even if that call throws. Ten call sites thread the test context through; three test callbacks gained the parameter they lacked. The three B3 tests are untouched — same assertions, same fault injection. Only how the context reaches the helper changed. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * test(#3057): capture phase-complete output from a subprocess, not fd 1 Two attempts to make in-process fd-1 interception safe both failed on the bench. The suite reported zero test results on either lane while exiting 1 — four events for the whole file — because the runner parses its event stream from the child's stdout, and process.stdout.write routes through fs.writeSync whenever fd 1 resolves to a file, which is how the runner captures. Patching that seam anywhere in a file can therefore destroy the file's own reporting, and tightening the window only moved the runtime from 326s to 125s without recovering a single event. So the interception is gone rather than tuned. The helper now spawns gsd-tools as a real subprocess and reads stdout the way the OS already gives it to us, which is what the rest of the suite does. It asserts the command succeeded before parsing, so a genuine failure can no longer present as a JSON parse error. The two fault-injecting tests could not survive that move as written: a subprocess cannot see a mock installed in the parent. Instead of reinstating the interception they now produce the fault on disk — the summary artifact is created as a dangling symlink, so the staleness check's real statSync throws inside the child. That is a more honest fixture than a mock in any case, since it is a condition a user's tree can actually be in. Skipped on Windows, matching the existing symlink precedent in the write-guard suite. Three further call sites turned out to depend on parent-process writeFileSync mocks the subprocess could not see. Those call the CJS function directly, which is what they always wanted — they never needed stdout at all. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3057): one name for one signal, one encoding for one distinction Standards review found four things this branch introduced, all of them inconsistencies with itself rather than with the repo. One upstream bit reached its consumers under three names — verification_stale_check_indeterminate in two modules, the same value with "stale" dropped in a third, and stderr only in the fourth. Standardised on the long name wherever it is a field. The workstream inventory keeps its stderr channel, since its return shape has nowhere to hang a per-phase field without rippling the builder's types, but it now says the same word for the same thing. worktree-safety encoded one three-way distinction two ways in a single file: a named union for a finding's kind, and boolean|null for an inventory entry's existence. The second is now a named union too. Two assertions matched human prose because the blocked and non-blocked completion paths carried no typed field for the signal. Both now assert typed values. The first round of this fix added the field but left the regex beside it, which is the banned pattern sitting next to its own replacement; the second removed it and added an assertion on the reason enum so nothing was lost. The remaining two were reasoned away before being fixed, and both reasons were bad. "No typed surface exists" is the condition CONTRIBUTING says to fix by adding one — it took three lines. "The file already does this dozens of times" is not licence to add instance number thirty-one; a convention that violates a documented rule is debt, not precedent. Vocabulary differing across DIFFERENT modules is left alone: CONTEXT.md rejects a single shared result envelope, so per-module shapes are precedented, and a baseline smell does not outrank a documented standard. A census of every line this branch adds to a test file now finds no regex or substring assertion on produced prose: 87 strictEqual, 25 ok (all non-empty or shape guards), 12 equal, 3 throws (all typed err.code predicates), 3 deepStrictEqual, 2 notStrictEqual. Refs #3051 Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * chore(#3057): backfill changeset pr number to 3088 --------- Co-authored-by: sim <sim@local> Co-authored-by: Claude Opus 5 <noreply@anthropic.com>	2026-08-05 16:00:52 -04:00
Tom Boucher	51b6e3c35c	test(#2136): add localToday regression + mirror fake/inline clock stubs ... Adds a dedicated regression (tests/fix-2136-clock-local-today.test.cjs): - realClock.localToday() returns the LOCAL calendar day under a pinned instant + TZ (America/Chicago → 2020-06-14, the issue's repro instant). - realClock.today() is unchanged (UTC) — internal/cosmetic stamps stay UTC. - localToday === today on a UTC host (no spurious divergence). - makeFakeClock mirrors localToday (drop-in Clock substitute). - field-level: a 'sync' transition with a split clock (today≠localToday) writes the LOCAL day into Last Activity, proving the wiring uses localToday. Mirrors localToday() in the fake clock helper and the inline fixedClock stubs in state-transition.test.cjs / state-rebuild.test.cjs (the Clock interface now requires it).	2026-07-12 15:34:59 -04:00
Tom Boucher	f65866f17d	fix(#1831): resolve ESLint errors and unused-var warnings from #1829/#1830 ... Two hard errors in src/state-transition.cts: - reconcileCurrentPosition: `!== null` guards on `Record<string,unknown>` values don't narrow the type to a primitive, causing @typescript-eslint/no-base-to-string to fire on String(fm.current_phase) and String(fm.current_phase_name). Extract to typed locals + use typeof narrowing so the rule sees string | number — which is the actual invariant. Four unused-var warnings (warnings are still defects per RULESET): - stripTemplatePlaceholders: `placeholder` was assigned value.trim() but never read — the value came from the loop variable itself, so removed. - deduplicateSessionArchive: `sectionContent` was sliced but the filter below uses the raw hs offsets directly — variable was dead code; removed. - state-rebuild.test.cjs: first transitionCore call in the orphan-row test is covered by the dedicated Leaky-Abstractions guard test below it; remove the no-op call rather than silently ignoring its result. - state-rebuild.test.cjs: `before = state` in the sync regression guard test was never read — remove the dead assignment. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-06-29 20:08:17 -04:00
Tom Boucher	b5c8a3e590	feat(#1827): rebuildCore + rebuild intent + drift-class unit tests (#1829) ... Phase 1 of approved feature #1817. Implements the body-structure derivability contract landed in ADR-1817 (Phase 0, PR #1828). Source changes (src/state-transition.cts): - Add `rebuild` as the 11th intent in StateTransitionIntent (ADR-1769 transition set extended per ADR-1817 §1). - Add `phaseInventoryProvider` optional dep + PhaseInventoryRecord type (Leaky-Abstractions guard: pure core stays testable without disk I/O; rebuild skips table reconciliation when the provider is absent). - Add `case 'rebuild':` dispatch arm to transitionCore (the missing-case compile-time guarantee extends to the 11th case). - Implement rebuildCore orchestrator + four drift-class helpers per ADR-1817 §2: * reconcileCurrentPosition — body prose re-derived from frontmatter * reconcileByPhaseTable — **By Phase:** table re-derived from disk inventory via the new dep * stripTemplatePlaceholders — `**Field:** [placeholder]` → `**Field:** (pending)` (no canonical source available) * deduplicateSessionArchive — keep most-recent 3 archived H3 blocks - Implement appendRebuildLogSection per ADR-1817 §3 — every mutation appends a structured entry (timestamp/kind/section/before/after/reason) to `## Rebuild Log`. Idempotency guarantee (ADR-1817 §4): a no-mutation rebuild appends NO log entry, so two successive runs on a clean file are byte-identical. Compiled output (gsd-core/bin/lib/state-transition.cjs): regenerated via `npm run build:lib` (tsc -p tsconfig.build.json). Tests (tests/state-rebuild.test.cjs, 18 cases): - Dispatch + idempotency contract (3 tests, including the load-bearing 'rebuild on a clean file is a no-op' that pins §4). - Current Position prose reconciliation, criterion #1 (3 tests). - Template-placeholder removal, criterion #3 (3 tests). - Session Continuity Archive de-duplication, criterion #4 (4 tests). - **By Phase:** table reconciliation via phaseInventoryProvider, criterion #2 (3 tests, including the Leaky-Abstractions no-op guard). - Regression guard for sync + prune, criterion #7 (2 tests). Verified: node --test tests/state-rebuild.test.cjs → 18/18 pass. Verified: node --test tests/state-transition.test.cjs → 85/85 pass (no regression on the existing 10 transitions). Phase 2 (#1826) wires the CLI surface (cmdStateRebuild + --dry-run + integration tests + docs + changeset). This PR adds the engine only — no user-visible command yet, so no-changelog label applied.	2026-06-29 15:59:37 -04:00