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enhance(#968): region-scoped negative-grep idiom + cross-task conflict warning (#1320)

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Adds a region/function-scoped negative-grep idiom to the gsd-planner verification guidance plus a warn-only `validate_plan` check (`scanFileWideNegativeGateConflict`) that flags when a task's file-wide negative grep bans a construct a sibling task legitimately requires elsewhere in the same file. ReDoS-safe (linear, no RegExp on author patterns); region-scoped gates are exempt. Warn-only — never errors, never flips `valid`.

Closes #968

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Tom Boucher
2026-06-16 02:20:34 -04:00
committed by GitHub
parent 14e0709eed
commit 2d264da661
7 changed files with 1188 additions and 2 deletions
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**`verify plan-structure` warns on cross-task region-scope conflicts (#968)** — when a plan task's file-wide negative grep (`! grep -Eq 'PAT' file` / `grep -c 'PAT' file == 0`) bans a construct a sibling task legitimately requires elsewhere in the same file, plan validation now surfaces a warning pointing to the new region/function-scoped negative-gate idiom (documented in the gsd-planner guidance and the planner-antipatterns reference, with a worked banned-in-X / required-in-Y example). Warn-only: it never errors and never changes `valid`. (#1320)