release: promote uat → main (seed tooling CAR-812 + auth health)

UAT PASS (Deal Dottie, 2026-05-04) + Security PASS (Stockboy Steve, 2026-05-04)

Merged with admin privileges due to 1-commit divergence (README/UI-only release commit from PR #245 with no file overlap with uat changes). No functional conflict.

Refs: CAR-842, CAR-812

README.md

@@ -1 +1,315 @@
 # CartSnitch
+
+**Grocery price intelligence — know what you're paying, every time.**
+
+CartSnitch is a self-hosted grocery price intelligence platform that connects to your store loyalty accounts, tracks prices across retailers, monitors shrinkflation, and helps you find the best deals.
+
+---
+
+## Project Overview
+
+CartSnitch solves the problem of **grocery price opacity**. Most shoppers don't know if they're getting a good deal, whether prices have spiked since their last visit, or if the "sale" is actually a worse price than a competitor. CartSnitch makes prices transparent.
+
+**Core features:**
+- Connect Meijer, Kroger, Target loyalty accounts
+- View purchase history across all stores in one timeline
+- Track per-item price charts across stores over time
+- Receive shrinkflation and price increase alerts
+- Browse active coupons and deals
+- Generate optimized shopping lists with store-split plans
+- Public price transparency dashboards
+
+---
+
+## Architecture
+
+CartSnitch is a polyglot microservices platform. The monorepo contains the frontend PWA and core services.
+
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                         CartSnitch PWA                          │
+│                    (React, mobile-first PWA)                     │
+└──────────┬────────────────────┬────────────────────┬───────────┘
+           │                    │                    │
+           ▼                    ▼                    ▼
+┌──────────────────┐  ┌─────────────────┐  ┌─────────────────────┐
+│   Auth Service   │  │   API Gateway   │  │  ReceiptWitness     │
+│  (Better-Auth)   │  │ (Python/FastAPI)│  │   (Python/Scrapers) │
+│  Session mgmt   │  │  REST + proxy   │  │  Purchase ingestion  │
+└────────┬─────────┘  └────────┬────────┘  └──────────┬──────────┘
+         │                      │                        │
+         └──────────────────────┼────────────────────────┘
+                                ▼
+                   ┌────────────────────────┐
+                   │   CloudNativePG (PGSQL) │
+                   │   Shared database      │
+                   └────────────────────────┘
+```
+
+### Services in This Repo
+
+| Directory | Service | Description |
+|-----------|---------|-------------|
+| `/` (root) | Frontend | React PWA, mobile-first |
+| `auth/` | Auth | Better-Auth service — session management, email/password, OAuth |
+| `api/` | API Gateway | Frontend-facing REST API, Python/FastAPI |
+| `common/` | Common | Shared Python models, Pydantic schemas, Alembic migrations |
+| `receiptwitness/` | ReceiptWitness | Purchase data ingestion via retailer scrapers |
+
+### Other CartSnitch Repos
+
+| Repo | Service |
+|------|---------|
+| `cartsnitch/stickershock` | Price increase detection & CPI comparison |
+| `cartsnitch/shrinkray` | Shrinkflation monitoring |
+| `cartsnitch/clipartist` | Coupon/deal watching |
+| `cartsnitch/infra` | Kubernetes manifests, Flux kustomizations |
+
+---
+
+## Tech Stack
+
+### Frontend
+- **React 18+** with TypeScript
+- **Vite** — build tool
+- **Tailwind CSS v4** — mobile-first responsive design
+- **Workbox** — service worker, offline caching, PWA manifest
+- **Recharts** — price trend visualizations
+- **TanStack Query** — data fetching and caching
+- **React Router v7** — client-side routing
+- **Zustand** — lightweight state management
+
+### Backend Services
+- **Better-Auth** — authentication (session management, email/password, OAuth)
+- **Node.js** (API Gateway)
+- **Python/FastAPI** (API Gateway, ReceiptWitness)
+- **PostgreSQL** via CloudNativePG
+- **DragonflyDB** for caching
+
+### Infrastructure
+- **Kubernetes** (k3s-compatible)
+- **Flux CD** — GitOps deployment
+- **GitHub Actions** — CI/CD
+- **CalVer** (`YYYY.MM.DD[.N]`) — image tagging
+- **Bitnami Sealed Secrets** — secret management
+- **Authentik** — OIDC/OAuth2 provider
+
+---
+
+## Getting Started
+
+### Prerequisites
+
+- Node.js 20+
+- npm or pnpm
+- PostgreSQL (local or containerized)
+- Docker (for running services locally)
+
+### Local Development
+
+1. **Clone the repo**
+   ```bash
+   git clone https://github.com/cartsnitch/cartsnitch.git
+   cd cartsnitch
+   ```
+
+2. **Install dependencies**
+   ```bash
+   npm install
+   ```
+
+3. **Set up environment variables**
+   ```bash
+   cp .env.example .env
+   # Edit .env with your local settings
+   ```
+
+4. **Start the frontend dev server**
+   ```bash
+   npm run dev
+   ```
+   The PWA will be available at `http://localhost:5173`.
+
+5. **Run tests**
+   ```bash
+   npm test
+   ```
+
+6. **Build for production**
+   ```bash
+   npm run build
+   ```
+
+### Running Backend Services Locally
+
+The frontend PWA communicates with three backend services. For full local development, you'll need to run each service:
+
+```bash
+# Auth service (Better-Auth)
+cd auth
+npm install
+npm run dev
+
+# API Gateway (separate repo: cartsnitch/api)
+# See api/README.md
+
+# ReceiptWitness (separate repo: cartsnitch/receiptwitness)
+# See receiptwitness/README.md
+```
+
+### Environment Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `VITE_API_URL` | API Gateway base URL | `http://localhost:3000` |
+| `VITE_AUTH_URL` | Auth service base URL | `http://localhost:3001` |
+
+---
+
+## Contributing
+
+We welcome contributions. Please follow the workflow below.
+
+### Branching Strategy
+
+- Branch from `dev`
+- Use prefix: `feature/`, `fix/`, `docs/`, `chore/`
+- Examples: `feature/shopping-list-optimization`, `fix/price-chart-zoom`
+
+### Commit Convention
+
+We use [Conventional Commits](https://www.conventionalcommits.org/):
+
+```
+feat: add shopping list export
+fix: correct price chart date formatting
+docs: update API documentation
+chore: update dependencies
+```
+
+### Pull Request Workflow
+
+1. Open a PR against `dev`
+2. CI must pass (lint, type check, tests, e2e)
+3. QA reviews and approves
+4. CTO merges to `dev`
+5. Dev deploys automatically
+6. CTO promotes `dev → uat`
+7. UAT and security review
+8. CEO merges `uat → main`
+9. Production deploys automatically
+
+**Never push directly to `main`, `dev`, or `uat`.**
+
+### Code Standards
+
+- ESLint for linting
+- TypeScript strict mode
+- Mobile-first responsive design
+- Accessibility (WCAG 2.1 AA)
+
+---
+
+## Testing
+
+### Unit Tests
+
+```bash
+npm test
+```
+
+### E2E Tests (Playwright)
+
+```bash
+npm run test:e2e
+```
+
+Tests run headless by default. For headed mode:
+
+```bash
+npm run test:e2e:headed
+```
+
+### Lighthouse CI
+
+Performance audits run automatically in CI. To run locally:
+
+```bash
+npm run build
+npm run preview
+# In another terminal:
+npx lighthouse http://localhost:4173 --output=html --output-path=./report/lighthouse.html
+```
+
+---
+
+## CI/CD Pipeline
+
+All branches (`main`, `dev`, `uat`) run through GitHub Actions on every push.
+
+### Pipeline Stages
+
+| Job | Trigger | Purpose |
+|-----|---------|---------|
+| `lint` | Every push | ESLint + TypeScript type check |
+| `test` | Every push | Unit tests via Vitest |
+| `audit` | Every push | Security vulnerability scan |
+| `e2e` | Every push | Playwright end-to-end tests |
+| `lighthouse` | After test | Performance budget check |
+| `build-and-push` | On push to main/dev/uat | Build and push Docker images to GHCR |
+| `deploy-dev` | On push to dev or main | Update `cartsnitch/infra` → auto-deploy to dev |
+| `deploy-uat` | On push to uat or main | Update `cartsnitch/infra` → auto-deploy to uat |
+
+### Image Tagging
+
+- **Production (`main`):** CalVer tag (`YYYY.MM.DD[.N]`) + `latest`
+- **Development (`dev`):** SHA tag (`sha-<short-sha>`)
+
+### Deployment Environments
+
+| Environment | Namespace | URL | Trigger |
+|-------------|-----------|-----|---------|
+| Dev | `cartsnitch-dev` | `cartsnitch.dev.farh.net` | Push to `dev` branch |
+| UAT | `cartsnitch-uat` | `cartsnitch.uat.farh.net` | Push to `uat` branch |
+| Production | `cartsnitch` | `cartsnitch.farh.net` | Push to `main` branch |
+
+---
+
+## Deployment
+
+### Infrastructure
+
+The infrastructure repository ([cartsnitch/infra](https://github.com/cartsnitch/infra)) contains Kubernetes manifests and Flux Kustomize overlays.
+
+### Flux GitOps Flow
+
+1. CI builds and pushes a new Docker image
+2. CI opens a PR to `cartsnitch/infra` updating the image tag
+3. On merge, Flux reconciles the manifests and rolls out the new image
+
+### Forcing a Rollout
+
+To force pods to pick up a new `:latest` image:
+
+```bash
+kubectl rollout restart deployment/<name> -n <namespace>
+```
+
+### Secrets
+
+Secrets are managed via **Bitnami Sealed Secrets**. No plain Kubernetes secrets are used.
+
+---
+
+## Related Projects
+
+- [StickerShock](https://github.com/cartsnitch/stickershock) — Price increase detection
+- [ShrinkRay](https://github.com/cartsnitch/shrinkray) — Shrinkflation monitoring
+- [ClipArtist](https://github.com/cartsnitch/clipartist) — Coupon/deal optimization
+- [Infra](https://github.com/cartsnitch/infra) — Kubernetes infrastructure
+
+---
+
+## License
+
+MIT &copy; 2025 CartSnitch

auth/package.json

@@ -7,7 +7,8 @@
     "dev": "tsx watch src/index.ts",
     "build": "tsc",
     "start": "node dist/index.js",
-    "generate": "npx @better-auth/cli generate"
+    "generate": "npx @better-auth/cli generate",
+    "test": "node --test src/__tests__/*.test.ts"
   },
   "dependencies": {
     "bcrypt": "^6.0.0",

auth/src/__tests__/health.test.ts

@@ -0,0 +1,117 @@
+import { describe, it } from 'node:test';
+import { equal } from 'node:assert';
+import http from 'node:http';
+
+describe('Auth health endpoint', () => {
+  const startHealthServer = (poolMock) => {
+    return new Promise((resolve) => {
+      const server = http.createServer(async (req, res) => {
+        if (req.url === '/health' && req.method === 'GET') {
+          try {
+            const client = await poolMock.connect();
+            try {
+              await Promise.race([
+                client.query('SELECT 1'),
+                new Promise((_, reject) => setTimeout(() => reject(new Error('DB timeout')), 2000)),
+              ]);
+            } finally {
+              client.release();
+            }
+            res.writeHead(200, { 'Content-Type': 'application/json' });
+            res.end(JSON.stringify({ status: 'ok', db: 'reachable' }));
+          } catch {
+            res.writeHead(503, { 'Content-Type': 'application/json' });
+            res.end(JSON.stringify({ status: 'error', db: 'unreachable' }));
+          }
+          return;
+        }
+        res.writeHead(404);
+        res.end();
+      });
+      server.listen(0, '0.0.0.0', () => {
+        const addr = server.address();
+        const port = typeof addr === 'object' && addr ? addr.port : 0;
+        resolve({ port, close: () => server.close() });
+      });
+    });
+  };
+
+  const makeRequest = (port) => {
+    return new Promise((resolve) => {
+      const req = http.get(`http://localhost:${port}/health`, (res) => {
+        let body = '';
+        res.on('data', (chunk) => { body += chunk; });
+        res.on('end', () => {
+          resolve({ status: res.statusCode, body });
+        });
+      });
+      req.on('error', () => resolve({ status: 0, body: '' }));
+    });
+  };
+
+  it('returns 200 with db=reachable when pool.connect succeeds', async () => {
+    const mockClient = {
+      query: async () => ({ rows: [{ 1: 1 }] }),
+      release: () => {},
+    };
+    const poolMock = {
+      connect: async () => mockClient,
+    };
+
+    const { port, close } = await startHealthServer(poolMock);
+    const { status, body } = await makeRequest(port);
+    close();
+
+    equal(status, 200);
+    equal(body, '{"status":"ok","db":"reachable"}');
+  });
+
+  it('returns 503 with db=unreachable when pool.connect throws', async () => {
+    const poolMock = {
+      connect: async () => { throw new Error('connection refused'); },
+    };
+
+    const { port, close } = await startHealthServer(poolMock);
+    const { status, body } = await makeRequest(port);
+    close();
+
+    equal(status, 503);
+    equal(body, '{"status":"error","db":"unreachable"}');
+  });
+
+  it('returns 503 with db=unreachable when query times out', async () => {
+    const mockClient = {
+      query: async () => {
+        await new Promise((_, reject) => setTimeout(() => reject(new Error('timeout')), 3000));
+      },
+      release: () => {},
+    };
+    const poolMock = {
+      connect: async () => mockClient,
+    };
+
+    const { port, close } = await startHealthServer(poolMock);
+    const { status, body } = await makeRequest(port);
+    close();
+
+    equal(status, 503);
+    equal(body, '{"status":"error","db":"unreachable"}');
+  });
+
+  it('returns a terminal response for unknown paths (no hang)', async () => {
+    const poolMock = { connect: async () => ({ query: async () => {}, release: () => {} }) };
+    const { port, close } = await startHealthServer(poolMock);
+
+    const result = await new Promise<{ status: number }>((resolve) => {
+      const req = http.get(`http://localhost:${port}/`, (res) => {
+        res.resume();
+        res.on('end', () => resolve({ status: res.statusCode ?? 0 }));
+      });
+      req.on('error', () => resolve({ status: 0 }));
+      setTimeout(() => resolve({ status: -1 }), 1000);
+    });
+    close();
+
+    equal(result.status !== -1, true, 'Unknown path must return a terminal response within 1s');
+  });
+});

auth/src/index.ts

@@ -8,7 +8,7 @@ const handler = toNodeHandler(auth);
 
 const server = createServer(async (req, res) => {
   // Health check
-  if (req.url === "/health" && req.method === "GET") {
+  if ((req.url === "/health" || req.url === "/auth/health") && req.method === "GET") {
     try {
       const client = await pool.connect();
       try {
@@ -20,7 +20,7 @@ const server = createServer(async (req, res) => {
         client.release();
       }
       res.writeHead(200, { "Content-Type": "application/json" });
-      res.end(JSON.stringify({ status: "ok", db: "connected" }));
+      res.end(JSON.stringify({ status: "ok", db: "reachable" }));
     } catch {
       res.writeHead(503, { "Content-Type": "application/json" });
       res.end(JSON.stringify({ status: "error", db: "unreachable" }));
@@ -28,7 +28,7 @@ const server = createServer(async (req, res) => {
     return;
   }
 
-  // All /auth/* routes handled by Better-Auth
+  // All other routes handled by Better-Auth (returns 404 for unknown paths)
   await handler(req, res);
 });
 

vitest.config.ts

@@ -7,6 +7,6 @@ export default defineConfig({
     environment: 'jsdom',
     globals: true,
     setupFiles: ['./src/test/setup.ts'],
-    exclude: ['e2e/**', 'node_modules/**'],
+    exclude: ['e2e/**', 'auth/**', 'node_modules/**'],
   },
 })