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Garry TanandClaude Opus 4.7
8d7a18ac03
`gbrain conversation-parser scan` reported `phase: no_match` on meeting pages where 175 of 226 lines (77.8%) were valid `imessage-slack` format. The 36 reformatted Circleback meetings could not flow through the conversation facts pipeline. Root cause: `scorePattern` only scans the first 10 non-blank lines. A meeting page's `## Summary` + blockquote + `## Transcript` preamble takes all 10 head slots, so every pattern scored 0 and the orchestrator short-circuited to `no_match` without ever seeing the transcript. Fix: two-tier scoring with threshold gates. 1. Fast path unchanged: chat-only pages match on line 1, scoring 1.0, skipping the fallback entirely. 2. Full-body fallback fires when `top.score < SCORING_HEAD_TRIGGER_THRESHOLD` (0.3). NOT `=== 0` — Codex P1 #1 caught the bug class where a stray head match (blockquote that accidentally matches an unrelated pattern at 0.1) would suppress the fallback. 0.3 leaves the fast path untouched while triggering on any preamble-dominated page. 3. Minimum acceptance floor `SCORING_MIN_ACCEPTANCE` (0.05) prevents essay false positives: a 300-line essay with one stray `**Name** (date time):` line scores ~0.003 — without the floor it would flip to `regex_match` with `messages.length = 1`. Closes Codex P1 #2. DRY refactor: extract `getNonBlankLines` + `scoreFromLines` so the quick_reject + regex loop lives in one place. New exported `scorePatternFull` for direct unit testing. Fallback pre-splits the body ONCE per pass to avoid 12 redundant splits. Plan + decisions + Codex consult absorption at: ~/.claude/plans/system-instruction-you-are-working-starry-frost.md Tests: 10 new cases in test/conversation-parser/parse.test.ts (87 pass). Highlights: - #1533 IRON-RULE regression pin (meeting page → regex_match, imessage-slack, 20 messages) - Stray-head-match guard (Codex P1 #1: irc-classic 0.1 in head does not suppress fallback; imessage-slack wins on full body) - Essay false-positive guard (Codex P1 #2: 1/301 score below acceptance floor stays no_match) - 300-line preamble + 50 chat lines hits fallback - Cap test reshaped (Codex P2 #6): pins behavior not constant value Once landed and a brain has `cycle.conversation_facts_backfill.enabled = true` (opt-in), the 36 Circleback meetings flow through the fact extractor automatically. Operators on the manual path run `gbrain extract-conversation-facts <source>` directly. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>