docs: add GET /api/budget/breakdown endpoint

claude committed Mar 5, 2026

docs: add EPIC-04 household items schema, API contract, and ADR-016 - Schema.md: Add 6 new tables (household_items, household_item_tags, household_item_notes, household_item_budgets, household_item_work_items, household_item_subsidies) with full column specs, indexes, and migration SQL - API-Contract.md: Add 20 household item endpoints covering CRUD, notes, budget lines, work item links, subsidies, and subsidy payback - ADR-016: Document decision to use separate entity with parallel structure - ADR-Index.md: Add ADR-016 entry Co-Authored-By: Claude product-architect (Opus 4.6) <noreply@anthropic.com>

claude committed Mar 2, 2026