- Query bar parses >500, >=500, <500, <=500, 500-1500 into amount_min/max filters
- Parsed tokens shown as dismissable chips below the query bar
- Category, Bank, Tag, Type filters upgraded from single-select to multi-select
- MultiSelect dropdown component with checkbox list and active-state border
- Backend: TransactionFilters uses string[] for categories/bank_names/tag_ids/transaction_types
- SQL: ANY($n::text[]) / ANY($n::int[]) for array filters
- Monthly spend chart with category breakdown drill-down
- Merchant frequency and spend analytics with per-merchant history
- Subscription detection and recurring charge tracking
- Fee and interest analytics endpoint
- Expanded category list with formatCategory display helper
siddharthd