feat: add marketplace metrics, privacy features, and service registry endpoints

- Add Prometheus metrics for marketplace API throughput and error rates with new dashboard panels
- Implement confidential transaction models with encryption support and access control
- Add key management system with registration, rotation, and audit logging
- Create services and registry routers for service discovery and management
- Integrate ZK proof generation for privacy-preserving receipts
- Add metrics instru

docs/marketplace_web.md

@@ -1,38 +1,43 @@
 # Marketplace Web – Task Breakdown
 
-## Status (2025-09-27)
+## Status (2025-12-22)
 
-- **Stage 1**: Frontend scaffolding pending. Awaiting API definitions from coordinator/pool hub before wiring mock vs real data sources.
+- **Stage 1**: ✅ Completed - Vite + TypeScript project initialized with API layer, auth scaffolding, and mock/live data toggle.
+- **Stage 2**: ✅ Completed - Connected to coordinator endpoints with feature flags for live mode rollout.
 
-## Stage 1 (MVP)
+## Stage 1 (MVP) - Completed
 
 - **Project Initialization**
-  - Scaffold Vite + TypeScript project under `apps/marketplace-web/`.
-  - Define `package.json`, `tsconfig.json`, `vite.config.ts`, and `.env.example` with `VITE_API_BASE`, `VITE_FEATURE_WALLET`.
-  - Configure ESLint/Prettier presets if desired.
+  - ✅ Scaffold Vite + TypeScript project under `apps/marketplace-web/`.
+  - ✅ Define `package.json`, `tsconfig.json`, `vite.config.ts`, and `.env.example` with `VITE_API_BASE`, `VITE_FEATURE_WALLET`.
+  - ✅ Configure ESLint/Prettier presets.
 
 - **API Layer**
-  - Implement `src/api/http.ts` for base fetch wrapper with mock vs real toggle.
-  - Create `src/api/marketplace.ts` with typed functions for offers, bids, stats, wallet.
-  - Provide mock JSON files under `public/.mock/` for development.
+  - ✅ Implement `src/api/http.ts` for base fetch wrapper with mock vs real toggle.
+  - ✅ Create `src/api/marketplace.ts` with typed functions for offers, bids, stats, wallet.
+  - ✅ Provide mock JSON files under `public/mock/` for development.
 
 - **State Management**
-  - Implement lightweight store in `src/store/state.ts` with pub/sub and caching.
-  - Define shared TypeScript interfaces in `src/store/types.ts` per bootstrap doc.
+  - ✅ Implement lightweight store in `src/lib/api.ts` with pub/sub and caching.
+  - ✅ Define shared TypeScript interfaces in `src/lib/types.ts`.
 
 - **Views & Components**
-  - Build router in `src/router.ts` and bootstrap in `src/app.ts`.
-  - Implement views: `HomeView`, `OfferDetailView`, `BidsView`, `StatsView`, `WalletView`.
-  - Create components: `OfferCard`, `BidForm`, `Table`, `Sparkline`, `Toast` with validation and responsive design.
-  - Add filters (region, hardware, price, latency) on home view.
+  - ✅ Build router in `src/main.ts` and bootstrap application.
+  - ✅ Implement views: offer list, bid form, stats cards.
+  - ✅ Create components with validation and responsive design.
+  - ✅ Add filters (region, hardware, price, latency).
 
 - **Styling & UX**
-  - Create CSS files (`styles/base.css`, `styles/layout.css`, `styles/components.css`) implementing dark theme and 960px layout.
-  - Ensure accessibility: semantic HTML, focus states, keyboard navigation.
-  - Add toast notifications and form validation messaging.
+  - ✅ Create CSS system implementing design and responsive layout.
+  - ✅ Ensure accessibility: semantic HTML, focus states, keyboard navigation.
+  - ✅ Add toast notifications and form validation messaging.
+
+- **Authentication**
+  - ✅ Implement auth/session scaffolding in `src/lib/auth.ts`.
+  - ✅ Add feature flags for marketplace actions.
 
 - **Documentation**
-  - Update `apps/marketplace-web/README.md` with instructions for dev/build, mock API usage, and configuration.
+  - ✅ Update `apps/marketplace-web/README.md` with instructions for dev/build, mock API usage, and configuration.
 
 ## Stage 2+