feat: initial implementation — all 35 requirements across phases 1-3

Backend (Spring Boot 3.2 / Java 21 / PostgreSQL):
- JWT auth with BCrypt password hashing
- User profile + Mifflin-St Jeor BMR calculator
- Food search + barcode via OpenFoodFacts API with local cache
- Meal CRUD with user data isolation and ownership checks
- AI photo analysis (OpenAI Vision) with confidence intervals
- AI correction feedback loop for personalisation
- Flyway DB migrations + RFC-7807 error responses

Mobile (React Native / TypeScript):
- Full navigation stack (Auth → Tabs → Home stack)
- Design tokens (WCAG 2.2 AA colours, 8px grid, 48px touch targets)
- 10 screens: Login, Register, Home, Search, Camera, AI Result, Edit Meal,
  Daily Details, History, Profile
- Confidence-aware calorie display (kcal ± range)
- Repeat last meal shortcut + macro tracking

Docs:
- docs/PLAN-AND-REQUIREMENTS.md
- docs/traceability.csv (35 requirements, all Implemented)

.vscode/mcp.json

@@ -0,0 +1,14 @@
+{
+  "servers": {
+    "virsaitis": {
+      "type": "stdio",
+      "command": "node",
+      "args": [
+        "/Users/andris.enins/.vscode/extensions/accenture-baltics.virsaitis-3.0.3/dist/mcp-server.js"
+      ],
+      "env": {
+        "VIRSAITIS_WORKSPACE": "${workspaceFolder}"
+      }
+    }
+  }
+}