2 Commits

Author	SHA1	Message	Date
Tom Boucher	dc3c81e93d	chore(#3212): src/pattern.cts is the sole owner of runtime-value regex construction — Phase 1 (#3416) ... * test(#3412): failing-first suite for the pattern-construction seam Phase 1 of epic #3212 (ADR-3212 §1/§2/§7). Tests only — src/pattern.cts and eslint-rules/no-adhoc-regex-escape.cjs do not exist yet, so both suites fail with MODULE_NOT_FOUND, which is the intended RED. Locks the measured behavior rather than the assumed behavior: RegExp.escape hex-escapes the leading character of nearly every string ("abc" -> "\x61bc"), so the suite asserts match-equivalence against an inlined historical oracle (the implementation being deleted) rather than byte-equivalence of pattern text — 200 seeded fast-check runs plus a fixed corpus, 0 mismatches. Also locks the latent character-class range bug this phase fixes as a side effect: a hyphen-bearing value interpolated into [...] currently forms a real range and matches an unintended character; post-migration it must not. * chore(#3412): src/pattern.cts owns runtime-value regex construction Phase 1 of epic #3212 (ADR-3212 §1/§2/§6/§7). Adds the pattern seam delegating to the built-in RegExp.escape, deletes every hand-rolled copy, and raises the Node floor to the Active LTS line. The census was low, three times over. ADR-3212 counted 10 copies; a graph query found 12; the new lint rule — once live — found 27 more. The difference is that the census counted named helper FUNCTIONS while the rule counts the escape SHAPE, so inline .replace(<class>, '\$&') copies were never in scope. ADR §1's actual requirement is that no module outside the seam escapes a value for regex use, so all of them are, and CLAUDE.md's no-defer rule makes them this change's work. Fourth consecutive epic here whose copy count was low — the argument for ADR-3180 Amendment 3's "state N found by the guard" rule. Also corrected mid-implementation: the survey reported phase-id.cts's escapeRegex had 0 external importers. It had 8 production importers, making its removal a public-surface change to an ADR-2121-owned module and requiring an update to that ADR's locked-surface test. Blast radius revised Medium-High -> High. RegExp.escape is match-equivalent but NOT text-equivalent: it hex-escapes the leading char of nearly every string ("abc" -> "\x61bc"). Equivalence is proven by a seeded fast-check property test against the deleted implementation as oracle. It also fixes a latent bug: a hyphen-bearing value interpolated into a character class previously formed a real range and matched an unintended character. Node floor 22 -> 24 (RegExp.escape is Node 24+), across engines, .nvmrc, package-lock, 9 CI matrix entries, and 5 docs. The aggregate `required-tests` context is unchanged and no job was added or removed, so branch protection cannot be orphaned by the dropped lanes. Enforced by eslint-rules/no-adhoc-regex-escape.cjs (shape-matched, with structural provenance for reviewed pattern-fragment constants rather than a name heuristic) plus a whole-tree companion guard covering the directories ESLint's globs miss. * fix(#3412): close the _SOURCE guard evasion, correct two false claims Three findings from the orthogonal review pass, all fixed. 1. The ESLint rule's `_SOURCE` provenance fallback was pure identifier- name matching with no binding check, so `new RegExp(userInput_SOURCE)` — a function parameter — sailed past the guard. That is the same rename-evasion class issue #3410 documents, reopened by the very fallback meant to complement the structural check. Now bound to the identifier's actual binding kind: import, require-derived const, or module-scope const; parameters, `let`/`var`, and unresolvable bindings fail closed. Four RuleTester cases cover the evasion and prove the legitimate cross-module case still passes. 2. src/pattern.cts's own header carried the stale pre-correction counts (12 copies / 17 call sites) while CONTEXT.md and the design doc carried the corrected ones (~39 / ~44) — a self-contradiction inside the PR whose entire purpose is deleting divergent copies. Rewritten, preserving the durable lesson: a named-function census cannot see inline copies; only a shape-matching guard can. 3. The claim that all deleted copies threw TypeError on non-string was false. phase-id.cts's copy — the one with 8 external importers — did String(value).replace(...) and never threw. The seam's locked signature does not coerce, so this is a real, now-disclosed behavior change rather than the pure preservation the tests asserted. Audited all 32 invocations across the 8 importers and 6 in-file callers: every one is safe by construction (upstream truthy guard or a string-producing derivation), verified by runtime probe against the compiled modules rather than by TS compilation, which cannot see a runtime undefined. Corrected the false claim in both the test comment and the design doc, and added it to Known limits. * docs(#3412): add Changed changeset for the Node 24 floor The only user-visible break in this phase. The escape-behavior change is internal and match-equivalent, so it carries no user-facing note. * fix(#3412): resolve the seam's require graph in script fixtures and packaging Checkpoint 2 came back red with 90 failures on the node24 lane. Three distinct defects, all introduced by routing scripts/ through the new pattern seam, none reproducible by any local gate: 1. ~82 failures — tests/adr-index-gate.test.cjs and tests/removed-but-needed-lint.test.cjs copy a scripts/*.cjs into an mkdtemp fixture and spawn it there (necessary: those scripts resolve their scan root from __dirname/.., so running the real script would scan the real repo). Each harness hand-listed the dependencies to copy alongside. Adding require('../gsd-core/bin/lib/pattern.cjs') to gen-adr-index.cjs made both lists silently incomplete -> MODULE_NOT_FOUND, plus 17 downstream 'did not emit parseable JSON' failures from the same crash. Fixed as a class, not an instance: new tests/helpers/copy-script- fixture.cjs walks a script's transitive static relative-require graph and copies it, so dependencies are derived and never re-declared. It throws (naming the unbuilt artifact) instead of letting the child die with a bare MODULE_NOT_FOUND. Verified for all four seam-consuming scripts: gen-adr-index, lint-removed-but-needed, gen-loop-host- contract, sync-runtime-launcher. 2. 2 failures — scripts/ ships wholesale but eslint-rules/ does not, so the new scripts/lint-no-adhoc-regex-escape.cjs would be MODULE_NOT_FOUND in a published install (#2858 guard). Excluded from the tarball, matching the existing precedent for gen-emitted- baseline.cjs, which is excluded for the identical reason, and locked with a test modeled on that one. Confirmed against a real npm pack: 890 files, 0 from eslint-rules/, and gsd-core/bin/lib/pattern.cjs present (so the other four scripts' requires are legitimate). 3. 6 failures — tests/phase-id.test.cjs asserted the literal escaped source text ('0*29', 'PROJ-42'). RegExp.escape is match-equivalent to the retired hand-rolled escaper but NOT text-equivalent: it hex- escapes the leading character and all hyphens ('0*\x329', '\x50ROJ\x2d42'). Verified NOT a behavior change — 576 match decisions across all three real interpolation prefixes, zero divergence. Those tests now compile each source into the same heading regex src/roadmap.cts's searchPhaseInContent builds and assert what matches and what does not, including the 'i'-flag canonicalization the hex escape has to preserve. Re-pinning the new literals would have rebuilt the same brittleness one layer down. Adds a test for the property the escape exists for: a dot in '1.2' must not act as a wildcard. Also shares one definition of 'a require' between the packaging guard and the fixture copier, so the two cannot disagree about what they scan. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3412): refuse to copy a fixture dependency outside the fixture root copyScriptWithDeps resolved each relative require and joined the repo-relative result onto fixtureRoot. A require resolving OUTSIDE the repo yields a '../'-prefixed relative path, so path.join climbed out of the fixture and wrote into the surrounding temp dir (verified: repoRoot=/repo + depAbs=/etc/passwd wrote /tmp/etc/passwd). No script in the tree does this today, so this closes an available escape rather than an active one. Refuses via the existing unresolved- require path so the failure names the offending specifier. Covered by a negative proof that the guard fires and that nothing lands outside the fixture. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(#3412): parse requires instead of pattern-matching them; restore the foreign-prefix contract Applies all findings from the second orthogonal review round, re-run because real code changed after round 1. HIGH (security) — extractRequires stripped BLOCK comments before LINE comments, so a '//' comment containing '/*' opened a phantom block comment, and a '//' inside a string literal truncated the line. Both hid real requires: 'const u="http://x"; require("./real.cjs")' returned [], and four real requires in gsd-core/bin/gsd-tools.cjs were invisible. Replaced with a real AST parse via espree. This is ADR-3212's own Decision 4 — tokenizer-first for stateful grammars — applied to the case it describes; comment/string/regex nesting is exactly such a grammar, which is why the regex version was wrong. The function was moved byte-identical out of the #2858 packaging guard, so the bug PRE-DATES this branch and has been a live blind spot there: a shipped script could have required an unshipped path undetected. Fixing it makes that guard strictly stronger than on next. espree is promoted from a transitive eslint dependency to an explicit devDependency rather than relying on hoisting. The script parse attempt sets ecmaFeatures.globalReturn because Node wraps CommonJS bodies in a function, making a top-level return legal — scripts/check-coverage-gate .cjs relies on it, and without the flag the guard throws on a file it is supposed to scan. Verified 0 unparseable across all 324 .cjs/.js under scripts/, bin/, and gsd-core/bin/, and 0 new violations against a real npm pack, so the exact extractor does not newly fail the guard. MEDIUM (security) — the repo-containment check guarded dependencies but not the entry path. One escapesContainment predicate now guards both. LOW (security) — containment was lexical while fs follows symlinks, and a directory symlink could mint a fresh dedupe key per level. realpath now resolves both repoRoot and each dependency before the decision, and the realpath-derived path is the dedupe key. Destination layout still uses the original repo-relative path, so copied trees are unchanged. MAJOR (standards) — the round-1 behavioral rewrite of phase-id tests lost the foreign-prefix contract: every assertion was satisfied by an impl returning [A-Z]+\x2d42, i.e. ANY project code — the exact #3599 bug class the exact-source prevents. The literal assertions it replaced were catching this. Now asserts the compiled regex REJECTS a different prefix with the same number. MAJOR (standards) — the test hand-duplicated production's heading regex with no parity guard (CLAUDE.md's 'Generative Fix Divergence'). Removed the parallel surface instead of policing it: src/roadmap.cts exports buildPhaseHeadingRegex, searchPhaseInContent calls it, the test imports it. Byte-identical .source and .flags verified for both escaped forms. MINOR — '..foo' no longer false-flagged as an escape; the inverted spurious-vs-missing doc claim corrected; the dead allow-test-rule header removed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * chore(#3412): backfill changeset pr number to 3416 * fix(#3412): make the escape guard's own regex linear, reword an injection-scan collision Two CI failures on PR #3416, both in code this branch added. CodeQL js/redos (high) — REPLACE_CALL_RE's outer alternation let a bracket run be consumed EITHER by the character-class branch OR one character at a time by the trailing catch-all, so a failing match explored both parses of every pair. Measured on the real regex: n=26 -> 204ms, n=28 -> 791ms, n=30 -> 3475ms, a clean 2^n. This script scans repo source, so a file with a long bracket run after '.replace(/' would hang CI outright — a guard against undisciplined pattern construction was itself the worst pattern in the diff. Fixed the way ADR-3212 already prescribes: the catch-all branch now excludes '[' and ']' so a bracket can only be consumed by the class branch (this is what makes it linear), and every quantifier is bounded (the locked bounded-quantifiers decision) as a second line of defense. Now 0ms at n=2000. Disclosed coverage tradeoff, recorded at the constant: a regex literal with a BARE unescaped ']' outside a class is no longer matched by this backstop. No census shape has that form, and the AST rule remains the primary detector. Verified the guard did not go blind doing it: a real census-shape violation is still reported, and an allow-adhoc-regex-escape suppression comment is still honored. Regression test drives the exported findViolations on a 2000-repetition adversarial input and asserts the RESULT. It makes no wall-clock assertion — elapsed-time tests are forbidden — so a regression surfaces as a harness timeout, which is the correct signal. Prompt injection scan — 'must not act as a regex wildcard' in a test comment matched the scanner's jailbreak pattern act\s+as\s+(a|an|if| my). Reworded to 'behave as'. Deliberately NOT allowlisted: silencing a whole test file over one phrase would blunt the scanner permanently, and the comment has nothing to do with injection. Neither failure was reachable from the remote runner — CodeQL and the injection scan are not in that matrix, so the sha it passed was green and still wrong. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: sim <sim@local> Co-authored-by: Claude Opus 5 <noreply@anthropic.com>	2026-08-13 16:19:57 -04:00
Tom Boucher	33fca50d8a	test(#3333): fold the runtime & install surface fix-* cluster — Wave 1 (#3341) ... * test(#3333): fold the runtime & install surface fix-* cluster — Wave 1 Folds 11 legacy tests/fix-*.test.cjs regression files into their module's main test suite: 6 folded into existing suites (host-integration-descriptors, effort-surface-axis, trae-imperative-reference, hermes-skills-migration, gsd-agent-isolation-guard), 5 renamed to become the module's sole suite (cursor-hook-workspace-roots, cursor-subagent-isolation, lint-compiled-artifact-sync, hooks-commonjs-marker, shared-hooks-dir-resolution). All 195 test() blocks preserved with zero drops; lint-test-file-count.cjs and eslint remain clean. No production code changed. Wave 1 of 7 in #3315 (H3 of epic #3053). * test(#3333): replace try/finally with t.after() in isolation-guard tests CONTRIBUTING.md bans try/finally inside test bodies (masks failures, not an approved pattern). The fold in the prior commit carried 27 instances forward verbatim from the deleted fix-3045-dispatch-isolation-resolver.test.cjs into an otherwise-clean file. Converts each to the approved per-test t.after() cleanup pattern — same cleanup call, registered instead of finally-wrapped. No assertion, fixture, or test-name change; test( count unchanged at 50. Found by the Standards review pass on Wave 1 (#3333, H3 of epic #3053). * fix(#3333): restore raw NUL byte mangled by the fold in hermes-skills-migration.test.cjs The prior fold commit copied fix-2284-hermes-agent-delegate-task-projection's "collision-robust" test via a text-based Read/Write pipeline, which silently turned a raw NUL byte (0x00) embedded in two string literals into a regular space character. That corrupted the test's actual purpose (proving a NUL byte survives a string-rewrite operation untouched) and produced a genuine gsd-test failure: `24 !== 1` for `out.split(' ').length`, because splitting on a space finds every space in the sentence instead of the single NUL byte the test meant to isolate. Root-caused by diffing the raw bytes (via `git cat-file blob` + `cat -v`) between the pre-fold source and the folded target — confirmed exactly two bytes differ. Restored via a byte-precise patch (latin1 round-trip) touching only those two lines; test( count and every other byte unchanged. * fix(#3333): use \x00 escape sequence instead of a raw NUL byte in test fixture The prior commit restored a byte-exact raw NUL byte matching the original fix-2284 source, and the production function (applyClaudeCodeBrandSwap) was confirmed correct in a standalone repro. But the same raw byte still failed through gsd-test's remote pipeline. Root cause is upstream of gsd-core: some step in that transfer path does not carry a raw 0x00 byte through untouched. A raw embedded NUL byte was never necessary here — `\x00` as a 4-character escape sequence in the source text produces the identical runtime character (U+0000) without ever putting a raw byte in the tracked file, sidestepping any byte-oriented transfer step. Applied at both call sites (the fixture string and the split() delimiter). No behavior change; test( count unchanged at 76. * fix(#3333): harden copyWithPathReplacement against a source file vanishing mid-copy (TOCTOU) Surfaced by this PR's own gsd-test run: tests/install-minimal-hooks.test.cjs and tests/opencode-command-dir-plural.test.cjs intermittently crashed with ENOENT reading gsd-core/workflows/zzz-e5-drift-fixture.md. Root cause is unrelated to test-file consolidation — tests/planning-prompt-drift.test.cjs writes that fixture directly into the real, shared gsd-core/workflows/ tree (main() hardcodes its scan root to the real repo) and deletes it in t.after(); copyWithPathReplacement's readdirSync-then-read loop has no protection against the listed file vanishing before it gets there, so a concurrently-running install path can crash entirely on what is otherwise a completely benign race. Fixed by skipping (not crashing on) a listed entry that no longer exists by the time the loop reaches it. Added a regression test that deterministically reproduces the race (readdirSync snapshot still lists the file; it is deleted immediately after) and proves both outcomes: no throw, and the vanished entry's destination is never partially written. Per CLAUDE.md's no-defer rule, a defect surfaced while verifying this PR is fixed inline rather than deferred — this overrides one-concern-per-PR. * fix(#3333): fix third NUL-byte-mangled occurrence missed by prior fix passes The fold originally mangled three raw-NUL-byte occurrences to spaces, not two — the earlier byte-restore and escape-sequence commits both only targeted the fixture string and the split() delimiter, missing out.includes('[ ]') a few lines below (should read out.includes('[\x00]')). A remote gsd-test run kept failing on this exact assertion even after both prior fixes, which is what surfaced the miss. Verified via a standalone repro using the file's real (not retyped) fixture content: all six assertions in the collision-robust test now pass. Zero raw NUL bytes remain in the file; test( count unchanged at 76. * chore(#3333): add changeset for the copyWithPathReplacement TOCTOU fix Fixed-type fragment for the production defect fixed inline in this PR (bin/install.js's copyWithPathReplacement). Exempt from docs/ requirements per CONTRIBUTING.md (only Added/Changed/Deprecated/Removed require it). * chore(#3333): backfill changeset PR number (pr:0 -> pr:3341) --------- Co-authored-by: sim <sim@local>	2026-08-10 19:02:34 -04:00