New `note` table (src/db/schema/notes.ts) referencing organization + user,
with org+author scoping so a doctor only sees their own notes within the active
clinic. Adds:
- src/types/note.ts + src/lib/note-validation.ts (zod)
- src/services/notes.ts (CRUD, treats non-uuid ids as not-found)
- src/routes/notes.ts mounted at /api/notes, gated requireAuth → requireOrg
- schema barrel + generated migration drizzle/0001_*.sql (applied on startup
by the runtime migrator)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>