Mike Swanson
512ceb4727
Builds the false-positive/true-positive proof the plan requires before the guard can be promoted to blocking, and fixes the one false-positive it surfaced. - test-harness-guard.sh: 12-case matrix in a throwaway repo, runs the REAL guard, asserts WARN/clean for real conflicts/secrets/keys vs legit content (setext underlines, dividers, docs that mention a marker, encrypted sops, public keys, .example templates). - harness-guard.sh: conflict rule now requires a real hunk (BOTH ^<<<<<<< AND ^>>>>>>>), dropping the lone =======$ trigger that false-positived on a 7-char setext underline / divider. Identical true-positive power (git writes all three markers); FP surface -> 0. - /self-check: new harness.guard_selftest runs the matrix in an isolated temp repo (read-only vs the real tree) so guard correctness is continuously proven. Verified 12/12 pass, true positives intact, real-tree FP surface = 0. FATAL flip (todo f1c11d0d, on/after 2026-06-22) is now evidence-backed + one-step. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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2 lines
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1.4.3
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