This commit implements the full inbound quote email processing workflow and atomic quote numbering:
- Add PocketBase collections for monthly atomic quote counters, email attachments, and threaded replies
- Add idempotent migration script to set up new collections and add deduplication field to existing quotes table
- Implement `/api/v1/quotes/next-number` endpoint for properly formatted Q-YYYY-MM-NNN quote numbers
- Add MCP tools for idempotent quote creation, reply threading, and message ID lookup
- Add end-to-end and concurrent smoke tests for pipeline validation
- Update TypeScript types for new quote-related entities
- Update project documentation and package.json scripts
- Mark quote email intake as complete in the parity backlog
- Add n8n v2 workflows for automated email monitoring and error alerts
