Add 6 optional query parameters to GET /api/quotes:
date_after_year/month/day and date_before_year/month/day
Changes:
- QuoteRepository::list_quotes gains date_after and date_before params
- NativeRepository and D1Repository build ISO date prefix WHERE clauses;
quotes with NULL date are excluded when any bound is set
- list_handler validates component ordering (month requires year, etc.)
and returns 400 on invalid combinations
- build_date_bound helper converts y/m/d components to ISO prefix strings
- UI api::list_quotes and browse page gain From/To year filter inputs
- author page call updated to pass None for the new date params
- openapi.yaml extended with 6 new query parameter entries
- 6 new integration tests covering after, before, range, and 400 cases
- 1 new native DB unit test covering all filter combinations
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Elijah Voigt