feat: PostgreSQL persistence — data survives Render cold starts - ap… - #11
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…/state.py: dual-backend store (PostgresStore + MemoryStore) - PostgresStore: psycopg2 connection pool, auto-creates tables, auto-seeds qualification-round data on first boot - MemoryStore: in-memory fallback for local dev (no DATABASE_URL) - Both expose identical interface — main.py unchanged - requirements.txt: added psycopg2-binary - main.py: health endpoint now reports active backend Fixes the 'data disappears on refresh' issue caused by Render free-tier spindown wiping in-memory state. With DATABASE_URL set, all demo invoices/verdicts/transactions persist across restarts. To enable on Render: 1. Create free PostgreSQL instance 2. Add DATABASE_URL env var to web service 3. First boot auto-creates schema + seeds demo data
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…i/state.py: dual-backend store (PostgresStore + MemoryStore) - PostgresStore: psycopg2 connection pool, auto-creates tables, auto-seeds qualification-round data on first boot - MemoryStore: in-memory fallback for local dev (no DATABASE_URL) - Both expose identical interface — main.py unchanged - requirements.txt: added psycopg2-binary - main.py: health endpoint now reports active backend Fixes the 'data disappears on refresh' issue caused by Render free-tier spindown wiping in-memory state. With DATABASE_URL set, all demo invoices/verdicts/transactions persist across restarts. To enable on Render: 1. Create free PostgreSQL instance 2. Add DATABASE_URL env var to web service 3. First boot auto-creates schema + seeds demo data
Description
Type of Change
Testing
cargo test)Checklist