Files
gbrain/test/conversation-parser
Garry TanandClaude Opus 4.7 80208f2195 feat(conversation-parser): add bold-paren-time built-in pattern (closes user-facing half of #1533)
Per /codex follow-up D-FOLLOWUP-1.B: the threshold-gated fallback fix
(8d7a18ac) closed the bug CLASS — but the user's actual 112 Circleback
meeting files at ~/git/brain/meetings/ use a transcript shape that no
existing built-in pattern matches:

  **Participant 2** (00:00): Companies that we...      ← (HH:MM)
  **Participant 1** (00:00:00): We found the...        ← (HH:MM:SS)

Without a pattern that matches this shape, even the fallback re-scoring
all 12 candidates against the full body returned zero matches → no_match.

Add `bold-paren-time` as the 13th built-in. Two sub-shapes covered via
non-capturing optional seconds group; capture indexes stay identical.
date_source: frontmatter so the page's `date:` provides the day anchor.

Time semantics: Circleback timestamps are elapsed-time-from-meeting-
start, not wall-clock. Parser treats them as wall-clock 24h on the
frontmatter date, so every message lands on the same day at HH:MM. The
fact extractor only cares about speaker + content, so this is honest
enough; precise per-line wall-clock would need an elapsed_time flag on
PatternEntry (v0.42+ scope).

Declaration position: after imessage-slack and telegram-bracket so on
the rare tie those more-specific patterns win. The regex requires `\)`
immediately after the time group, so imessage-slack's
`(2024-03-15 9:00 AM)` shape falls through correctly.

EMPIRICAL RESULT against all Circleback meetings in ~/git/brain/meetings:
- 367 total files with `source: circleback`
- Pre-fix:  0 parsed (no pattern matched the shape)
- Post-fix: 113 parsed (112 via bold-paren-time, 1 via telegram-bracket)
- 20,167 messages flow through to the fact extractor (was 0)
- 254 remain no_match (notes-only meetings without inline transcripts —
  transcripts in those cases live in separate files referenced via
  blockquote, not in the meeting body)

Smoke-tested manually against 3 representative files:
- 2026-03-19-yc-partner-strategy-ai-leverage-review.md → 225 messages
- 2026-01-15-ro-khanna-c4.md → 294 messages
- 2026-04-01-narrative-arc-equity-regrets.md → 9 messages (HH:MM:SS variant)

Tests: 54 unit cases pass (88 across full parser suite). 3 new cases in
parse.test.ts pin the contract: (HH:MM) shape matches, (HH:MM:SS) shape
matches, imessage-slack still wins on full-datetime overlap, and meeting
page with preamble + bold-paren-time transcript hits the threshold
fallback correctly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-26 23:11:45 -07:00
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