feat: production Docker, Playwright tests, settings API, and bug fixes

- Add user management endpoints (register, list, delete, change password)
- Add API key management (create, list, delete)
- Add settings persistence endpoints (get, put)
- Wire settings dialog to real backend (People, API Keys, System, Security)
- Fix login auth flow (window.location.href for full reload)
- Fix download URLs returning 401 (make public since UUIDs are unguessable)
- Fix border tool shadowColor validation (accept 6-8 hex digits)
- Fix remove-bg alpha matting fallback (retry without on failure)
- Fix AI tool silent fallbacks (report errors instead of no-ops)
- Add checkerboard background to before/after slider for transparency
- Add progress bars to all AI tool components
- Add Playwright E2E test suite (131 tests across 9 test files)
- Rewrite Dockerfile for production (tsx runtime, pre-baked AI models)
- Add .dockerignore for faster builds
- Add proper accessible labels to login form

apps/api/src/routes/tools/border.ts

@@ -9,7 +9,7 @@ const settingsSchema = z.object({
   cornerRadius: z.number().min(0).max(500).default(0),
   padding: z.number().min(0).max(200).default(0),
   shadowBlur: z.number().min(0).max(50).default(0),
-  shadowColor: z.string().regex(/^#[0-9a-fA-F]{6}$/).default("#00000080"),
+  shadowColor: z.string().regex(/^#[0-9a-fA-F]{6,8}$/).default("#00000080"),
 });
 
 export function registerBorder(app: FastifyInstance) {