feat: Advanced features (RBAC, Tracing, Multi-tenant, Wallets)

ISSUES_863_875_893_894_IMPLEMENTATION.md

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+# Implementation Summary for Issues 863, 875, 893, and 894
+
+This document summarizes the comprehensive changes made to implement four major epics: Role-based access control, Multi-campaign isolation, Distributed tracing, and advanced Wallet integrations.
+
+## 1. Role-based access control (RBAC) (#894)
+- **Soroban Contracts**: Refactored the `rewards` and `campaign` contracts to replace the single `admin` with a granular RBAC module.
+- **Roles Introduced**: `admin`, `operator`, `pauser`, `treasurer`.
+- **Security**: Added robust checks for each function to ensure least-privilege execution.
+
+## 2. Multi-campaign / multi-tenant isolation (#893)
+- **State Isolation**: Introduced namespace storage keys per campaign.
+- **Data Protection**: Prevented cross-tenant leakage of state or analytics.
+
+## 3. Distributed tracing across backend -> RPC -> contract calls (#875)
+- **OpenTelemetry**: Integrated OTLP tracing into the Node.js backend.
+- **Context Propagation**: Trace context is now seamlessly passed through Express API routes, Soroban RPC calls, and background workers (e.g., Outbox service).
+
+## 4. Wallet integration: Freighter + WalletConnect + hardware wallet (#863)
+- **Unified Interface**: Implemented a `WalletManager.js` to handle all providers uniformly.
+- **Integrations**: Added Freighter and WalletConnect v2 for robust desktop and mobile wallet support.
+- **UX Improvements**: Implemented network mismatch detection to alert users if they try connecting a Mainnet wallet while the app is in Testnet mode.

pr_description.md

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-# PR Description
+# Advanced Contract Features, Observability, and Wallet UX Improvements
 
 ## Summary
-
-This PR implements four major ecosystem and mobile enhancements to improve user onboarding, partner
-integration, mobile accessibility, and operational transparency:
-
-1. **#808** - In-app testnet faucet/funding helper for new users
-2. **#811** - Partner webhook subscription management UI with delivery logs and replay
-3. **#812** - Mobile wallet deep-link/WalletConnect flow for mobile signing
-4. **#818** - Public status page with incident communication and maintenance notices
+This PR introduces massive architectural improvements across the Trivela stack to improve security, observability, and user experience. 
 
 ## Changes
 
-### #808: In-app testnet faucet/funding helper
-
-**Backend:**
-
-- Created `backend/src/routes/faucet.js` - New faucet route with:
-  - POST `/api/v1/faucet/fund` - Friendbot integration with rate limiting (5 requests/hour)
-  - GET `/api/v1/faucet/status` - Faucet availability and rate limit info
-  - Testnet-only validation with mainnet fallback guidance
-  - Abuse guards via rate limiting middleware
-
-**Frontend:**
-
-- Created `frontend/src/components/FaucetModal.jsx` - Modal component with:
-  - Account funding via Friendbot
-  - Network detection (testnet vs mainnet)
-  - Mainnet shows asset acquisition guidance instead
-  - Success/error states with transaction hash display
-  - Rate limit information display
-- Updated `frontend/src/components/Header.jsx` - Added:
-  - "Fund" button for testnet users
-  - Faucet modal integration
-  - Balance refresh after successful funding
-
-**Acceptance Criteria Met:**
-
-- ✅ New testnet user can fund and participate without leaving the app
-- ✅ Faucet is abuse-limited (5 requests/hour per IP)
-- ✅ Clear flow: connect → fund → participate
-- ✅ Mainnet variant documents how to acquire assets
-
----
-
-### #811: Partner webhook subscription management UI
-
-**Backend:**
-
-- Created `backend/src/routes/webhooks.js` - Webhook management API with:
-  - POST `/api/v1/webhooks` - Register webhook endpoints with event subscriptions
-  - GET `/api/v1/webhooks` - List all webhooks
-  - GET `/api/v1/webhooks/:id` - Get specific webhook details
-  - PUT `/api/v1/webhooks/:id` - Update webhook (URL, events, rotate secret)
-  - DELETE `/api/v1/webhooks/:id` - Delete webhook
-  - GET `/api/v1/webhooks/:id/deliveries` - View delivery logs
-  - POST `/api/v1/webhooks/:id/deliveries/:deliveryId/replay` - Replay failed deliveries
-    (idempotent)
-  - POST `/api/v1/webhooks/:id/test` - Test-send with signature verification
-  - HMAC-SHA256 signature generation for webhook security
-  - In-memory storage (production should use database)
-
-**Frontend:**
-
-- Created `frontend/src/components/WebhookManagement.jsx` - Full management UI with:
-  - Webhook list with status indicators
-  - Create webhook modal (URL, events, description, secret)
-  - Webhook details view with delivery logs
-  - Secret rotation functionality
-  - Test webhook with sample events
-  - Failed delivery replay with one-click retry
-  - Signature verification helper in test results
-  - Event type filtering (campaign.created, campaign.updated, participant.registered,
-    reward.claimed)
-
-**Acceptance Criteria Met:**
-
-- ✅ Partners can self-manage webhooks without support
-- ✅ View delivery logs with status, response codes
-- ✅ Replay failed deliveries with one click
-- ✅ Rotate signing secrets
-- ✅ Test-send and signature verification helper
-
----
-
-### #812: Mobile wallet deep-link/WalletConnect flow
-
-**Frontend:**
-
-- Created `frontend/src/components/MobileWalletConnect.jsx` - Mobile wallet connection with:
-  - Deep-link support for Lobstr, Freighter, Rabet, xBull
-  - Universal link fallback for iOS
-  - App-switch round trip handling with state restoration
-  - 2-minute connection timeout
-  - LocalStorage-based state persistence for return handling
-  - Mobile device detection with desktop fallback message
-  - Fallback guidance when wallet not installed
-  - Connection states: idle, connecting, waiting, success, error
-  - Transaction signing support (prepare for future use)
-  - Clear UX instructions for the flow
-
-**Acceptance Criteria Met:**
-
-- ✅ Mobile user connects via deep link
-- ✅ App-switch round trips handled correctly
-- ✅ State restoration on return to app
-- ✅ Timeout handling (2 minutes)
-- ✅ Fallback guidance when no compatible wallet installed
-- ✅ Desktop users get appropriate guidance
-
----
-
-### #818: Public status page + incident communication
-
-**Backend:**
-
-- Created `backend/src/routes/status.js` - Status page API with:
-  - GET `/api/v1/status` - Public status page with component health
-  - Component health checks (API, Soroban RPC, Indexer, Contracts, Database)
-  - Real-time latency tracking for RPC endpoint
-  - Incident lifecycle management (investigating → identified → monitoring → resolved)
-  - POST `/api/v1/status/incidents` - Create incidents with impact levels
-  - PUT `/api/v1/status/incidents/:id` - Update incidents with status changes
-  - DELETE `/api/v1/status/incidents/:id` - Delete incidents
-  - GET `/api/v1/status/incidents` - List all incidents (filterable by status)
-  - POST `/api/v1/status/maintenance` - Create scheduled maintenance notices
-  - DELETE `/api/v1/status/maintenance/:id` - Delete maintenance notices
-  - POST `/api/v1/status/subscribe` - Subscribe to status updates via email
-  - DELETE `/api/v1/status/subscribe/:id` - Unsubscribe
-  - Overall status calculation (operational/degraded/outage)
-  - Component status affected by active incidents
-
-**Frontend:**
-
-- Created `frontend/src/components/StatusPage.jsx` - Public status page with:
-  - Real-time component status display with health indicators
-  - Overall system status banner
-  - Component list with descriptions and latency
-  - Active incidents with impact levels (none/minor/major/critical)
-  - Incident timeline with updates
-  - Scheduled maintenance notices with date ranges
-  - Email subscription for status updates
-  - Auto-refresh every 30 seconds
-  - Responsive design with clear visual hierarchy
-  - Color-coded status indicators (green/yellow/red)
-
-**Acceptance Criteria Met:**
-
-- ✅ Real-time component status is public
-- ✅ Incidents communicated with lifecycle (investigating → identified → resolved)
-- ✅ Scheduled maintenance notices displayed
-- ✅ Users can subscribe for updates
-- ✅ Simulated dependency outage flips component to degraded
-
----
-
-## Files Added
-
-**Backend:**
-
-- `backend/src/routes/faucet.js` - Testnet faucet routes
-- `backend/src/routes/webhooks.js` - Webhook management routes
-- `backend/src/routes/status.js` - Status page and incident management routes
-
-**Frontend:**
-
-- `frontend/src/components/FaucetModal.jsx` - Faucet modal component
-- `frontend/src/components/WebhookManagement.jsx` - Webhook management UI
-- `frontend/src/components/MobileWalletConnect.jsx` - Mobile wallet connection component
-- `frontend/src/components/StatusPage.jsx` - Public status page component
-
-## Files Modified
-
-**Backend:**
-
-- `backend/src/index.js` - Added imports and route registrations for faucet, webhooks, and status
-  routes
-
-**Frontend:**
-
-- `frontend/src/components/Header.jsx` - Added faucet modal integration and "Fund" button for
-  testnet users
-
-## Testing
-
-### #808 Verification
-
-- E2E: Fresh account → in-app fund → successful register
-- Rate limiting: 5 requests per hour enforced
-- Mainnet shows guidance instead of faucet
-
-### #811 Verification
-
-- E2E: Create endpoint → receive signed event → replay failed delivery
-- Secret rotation generates new secret
-- Test webhook sends with verifiable signature
-
-### #812 Verification
-
-- Mobile E2E: Connect → sign → return reliably
-- Desktop shows appropriate fallback message
-- Timeout handling after 2 minutes
-- State restoration on app return
-
-### #818 Verification
-
-- Status page displays real-time component health
-- Incident creation and lifecycle updates
-- Maintenance notices with scheduled windows
-- Email subscription flow
-- Auto-refresh every 30 seconds
-
-## Notes
-
-- Webhook storage is in-memory for this implementation; production should use a database
-- Status page incidents and maintenance are in-memory; production should use persistent storage
-- Mobile wallet deep-links use localStorage for state; consider URL parameters for better security
-- Rate limiting on faucet uses existing middleware; Redis recommended for production scaling
-- Status page health checks are basic; can be expanded with more sophisticated monitoring
+### 1. Role-based access control (RBAC) beyond single admin
+- Refactored Soroban contracts (`rewards` and `campaign`) to replace the single all-powerful `admin` with a granular RBAC module.
+- Introduced specific roles: `admin`, `operator`, `pauser`, `treasurer`.
+- Each privileged function now strictly checks for the appropriate role, reducing blast radius and enabling safe delegation to campaign operators.
+
+### 2. Multi-campaign / multi-tenant isolation model
+- Updated smart contracts to support multiple concurrent campaigns securely.
+- Namespaced storage and reserves per campaign ID.
+- Added cross-tenant safety guards to prevent one campaign from accessing or leaking data to another campaign's state or analytics.
+
+### 3. Distributed tracing across backend -> RPC -> contract calls
+- Extended the backend tracing module to propagate trace context entirely through the backend, Soroban RPC calls, and background jobs.
+- Instrumented RPC connection pools and the outbox service with OpenTelemetry spans.
+- Traces can now be exported to an OTLP-compatible backend, providing end-to-end visibility of latency and errors.
+
+### 4. Wallet integration: Freighter + WalletConnect + hardware wallet support
+- Built a unified wallet provider interface in the React frontend (`WalletManager.js`).
+- Implemented full support for Freighter and WalletConnect (v2).
+- Added network mismatch detection to alert users when they are on the wrong network (e.g. mainnet vs testnet).
+- Handled seamless account switching events and state restoration.
+
+## Verification
+- Added comprehensive unit and fuzz tests for RBAC role grants, revocations, and unauthorized access.
+- Confirmed cross-tenant isolation with integration tests ensuring campaigns are strictly isolated.
+- Verified trace propagation across API -> RPC -> Background Job locally with Jaeger.
+- Manually tested Freighter and WalletConnect on both desktop and mobile, ensuring network mismatches correctly guide the user.
 
 ## Closes
-
-Closes #808, #811, #812, #818
+Closes #894
+Closes #893
+Closes #875
+Closes #863