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Omair Saleh 3f2b6b6188 v3: PostgreSQL backend — 20K rows seeded, server-side SQL filtering

- Added PostgreSQL 16 Alpine service to Docker Swarm stack
- db.py: schema for 17 tables, auto-seed from jv_data.json on first boot
- /api/dashboard/data?start=&end= — server-side SQL filtering
  All Time: 0.43s (was 4MB JSON download stuck loading)
  Filtered (12mo): 0.20s with ~90% less data transferred
- Dashboard HTML patched: calls API instead of static JSON
- Integer casting for IsNewCustomer/HasDiscount/IsFreeShipping
- Advisory lock prevents race condition during parallel worker startup
- Returning Revenue now shows correctly: £14.5M (75% of total)

2026-03-02 20:24:15 +08:00

static

v3: PostgreSQL backend — 20K rows seeded, server-side SQL filtering

2026-03-02 20:24:15 +08:00

templates

v2: Live Flask app — real Gemini AI demos, Nano Banana image gen, real £19.4M data dashboard

2026-03-02 20:02:25 +08:00

ai_engine.py

v2: Live Flask app — real Gemini AI demos, Nano Banana image gen, real £19.4M data dashboard

2026-03-02 20:02:25 +08:00

app.py

v3: PostgreSQL backend — 20K rows seeded, server-side SQL filtering