Add Congressional Record ingestion, display, and LLM summaries

[mustyoshi]

Full-stack implementation for Congressional Record support:

Backend:

• New SQLAlchemy models (crec_issue, crec_granule, crec_speech,
  crec_bill_reference, crec_summary) with Alembic migration
• Importer for downloading/parsing daily CREC bulk data from govinfo.gov
  with speaker resolution and bill reference extraction
• Extended cite_parser with bill reference regex (H.R., S., etc.)
• LLM summarizer for granule-level and daily debate summaries
• FastAPI endpoints for browsing issues, granules, speaker stats,
  and activity calendar

Frontend:

• Prisma schema models for all new tables
• tRPC router with list, getIssue, getGranule, speakerStats,
  activityCalendar, debatesForBill, and legislatorStats procedures
• /congress/record browse page with date-based issue listing
• /congress/record/[issueId] daily view with Senate/House sections
• /congress/record/[issueId]/[granuleId] transcript with speech cards,
  speaker attribution, bill reference chips, and AI summary
• /congress/record/stats speaker leaderboard with word count rankings
• Bill detail "Debates" tab showing Congressional Record mentions
• Legislator detail speaking stats card with recent speeches
• SpeechCard component with party colors, avatars, and bill ref links

https://claude.ai/code/session_01EkXe8D2h9DAxnQbiWsJyAm