feat: SDLC database separation for CI/testing (#35)

## Summary
- Fix `isProductionDatabase()` to allow CI database (`euchre_camp_ci`)
- Add database schema reset before CI test runs
- Create `global.teardown.ts` for cleanup (CI: full reset, dev/prod: selective cleanup)
- Add `acceptance-tests` job to PR workflow with CI database
- Create `sync-prod-to-dev.js` script for one-way prod→dev sync
- Add `just` recipes: `sync-dev`, `test-prod`, `reset-ci-db`
- Store credentials in `.credentials` (gitignored) with unique CI user

## Testing
Verified against CI database:
- Schema reset works
- Migrations apply correctly
- Test users created successfully
- 219 tests pass (slow but working)

## Next Steps
- Set `CI_DATABASE_URL` as Gitea repository variable

Reviewed-on: #35
Co-authored-by: David Gwilliam <dhgwilliam@gmail.com>
Co-committed-by: David Gwilliam <dhgwilliam@gmail.com>

playwright.config.ts

@@ -11,16 +11,17 @@ export default defineConfig({
   // Fail the build on CI if you accidentally left test.only in the source code.
   forbidOnly: !!process.env.CI,
   // Retry on CI only.
-  retries: process.env.CI ? 2 : 0,
-  // Always run with 1 worker to avoid database conflicts
-  workers: 1,
+  retries: process.env.CI ? 1 : 0,
+  // Use 2 workers in CI for parallel project execution; 1 locally
+  workers: process.env.CI ? 2 : 1,
   // Reporter to use
   reporter: 'html',
   // Global setup and teardown
   globalSetup: require.resolve('./e2e/global.setup'),
+  globalTeardown: require.resolve('./e2e/global.teardown'),
   // Use base URL for relative navigation
   use: {
-    baseURL: 'http://localhost:3000',
+    baseURL: process.env.CI ? 'https://euchre-ci.notsosm.art' : 'http://localhost:3000',
     // Collect trace when retrying the failed test.
     trace: 'on-first-retry',
     // Capture screenshot only on failure
@@ -65,8 +66,8 @@ export default defineConfig({
     },
   ],
   // Run your local dev server before starting the tests
-  webServer: {
-    command: 'npm run dev',
+  webServer: process.env.CI ? undefined : {
+    command: 'bun run dev',
     url: 'http://localhost:3000',
     timeout: 120000,
     reuseExistingServer: !process.env.CI,