2026-06-12 false trigger: meta-session — we tuned the revert-language detector itself, so assistant prose ('revert language', 'reverting' in test fixtures/PR text) matched REVERT_RE; nothing abandoned (tool_errors were expected CLI probes/rejections). First post-tune FP pattern: self-referential sessions about the drafter trip the drafter.
2026-06-13 false trigger: tool_errors were external API hiccups (pypistats rate-limit/404, bq schema field); no code approach tried-and-abandoned this session (design-only work)
2026-06-12 false trigger: orphan-detection impl — 'revert' is feature-domain ('revert case' reverse hint = anchors-live-again) + a planned AC#1 refactor swapping batch-1 copied anchor logic for a shared match.py primitive; replacement was design-mandated, not a deadend discovered by failure
