Three fixes for conversation-sourced claim quality:
1. Trust hierarchy in extraction prompt: bot-generated numbers are
flagged as unverified context, not evidence. Directional claims
are extractable but specific figures require external verification.
Prevents laundering bot guesses into the KB as evidence.
2. Conversation-sourced claims tagged with verified: false and
source_type: conversation in frontmatter. Downstream consumers
(Leo, dashboard) can filter/flag these for verification.
3. GET /api/telegram-extractions endpoint for daily spot-checking.
Shows recent Telegram-sourced PRs with claim titles, status,
merge rate, and eval issues. Quick review surface.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>