docs: add GET /api/budget/breakdown endpoint

claude committed Mar 5, 2026

docs: add EPIC-08 Paperless-ngx architecture, schema, API contract, and ADR-015 - ADR-015: Paperless-ngx Integration Architecture (proxy pattern, polymorphic links, no cache) - Schema: document_links table with polymorphic entity_type discriminator - API Contract: proxy endpoints (/api/paperless/*) and document linking CRUD - Architecture: Paperless-ngx integration pattern, env vars, API version pinning - ADR Index: link to ADR-015 Co-Authored-By: Claude product-architect (Opus 4.6) <noreply@anthropic.com>

claude committed Mar 1, 2026