Add session intelligence pipeline for team transcript sync:
- lib/transcript-sync.ts: parse history.jsonl, enrich with Claude session
file data (tools_used, full turn count), sync marker management,
10-concurrent push with 5-concurrent Haiku summarization
- lib/llm-summarize.ts: raw fetch() to Anthropic Messages API (no SDK dep),
retry-after on 429, exponential backoff on 5xx, SHA-based eval-cache
- lib/sync.ts: pushTranscript() and pullTranscripts() following existing patterns
- 006_transcript_sync.sql: unique index on (team_id, session_id) for
idempotent upsert, RLS changed from admin-only to team-wide read
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>