Fix/deduplicate contributor fetching

PRE_COMMIT_SETUP.md

@@ -36,8 +36,6 @@ Extended pre-commit hook to run typecheck and affected tests.
   - Performance tips
   - Troubleshooting
 
-
-
 ## How It Works
 
 ### 1. Get Staged Files

README.md

@@ -78,6 +78,95 @@ npm run dev
 
 Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
 
+## 🔧 Developing Without a Live Network
+
+The app includes a mock-data development mode that allows you to develop and test the UI without connecting to a live Stellar testnet. This is useful for frontend development, UI testing, and running the test suite locally.
+
+### Enabling Mock Mode
+
+Set the `NEXT_PUBLIC_USE_MOCKS` environment variable to `true` in your `.env.local` file:
+
+```env
+NEXT_PUBLIC_USE_MOCKS=true
+```
+
+When enabled, the app uses mock campaign data instead of fetching from the blockchain. The mock data is defined in `src/lib/contractClient.ts` and is gated behind the `IS_MOCK_MODE` runtime check.
+
+**Important**: The build process will fail if you attempt to build a production bundle with `NEXT_PUBLIC_USE_MOCKS=true`. This is intentional to prevent accidental deployment of mock data to production. See [issue #343](https://github.com/Iris-IV/ProofOfHeart-frontend/issues/343) for details.
+
+### Using the DevMockPanel UI
+
+When mock mode is enabled in development, a **DevMockPanel** component appears as a floating button in the bottom-right corner of the screen (labeled "⚙️ Mock"). Click it to open the mock scenario panel.
+
+The panel allows you to:
+
+- **Switch campaign states** for campaigns 1-6 using dropdown selectors
+- **Test different UI states** without changing mock data files
+- **Persist scenarios** across page reloads (stored in sessionStorage)
+- **Reset all scenarios** to default with one click
+
+#### Available Mock Scenarios
+
+Each campaign can be set to one of the following scenarios:
+
+- **Default**: Original mock data from `contractClient.ts`
+- **Active**: Ongoing campaign, 50% funded, not verified
+- **Verified**: Verified campaign, 33% funded, funds not yet withdrawn
+- **Funded**: Successfully funded campaign, funds withdrawn, deadline passed
+- **Cancelled**: Campaign cancelled by creator, 25% funded
+- **Failed**: Deadline passed, goal not met (20% funded)
+- **Empty**: No data (empty title, description, zero amounts)
+- **Error**: Error state for testing error boundaries and loading states
+
+### Adding a New Mock Scenario
+
+To add a new mock scenario:
+
+1. **Add the scenario type** to the `MockScenario` type in `src/hooks/useDevMockScenario.ts`:
+
+```typescript
+export type MockScenario =
+  | "default"
+  | "active"
+  // ... existing scenarios
+  | "your_new_scenario"; // Add here
+```
+
+2. **Implement the scenario logic** in `src/lib/devMockScenarios.ts` by adding a new case in the `applyMockScenario` function:
+
+```typescript
+case "your_new_scenario":
+  return {
+    ...campaign,
+    // Set your desired campaign properties
+    is_active: true,
+    status: "active" as CampaignStatus,
+  };
+```
+
+3. **Add the scenario to the UI** in `src/components/DevMockPanel.tsx` by adding an `<option>` to the select dropdown:
+
+```tsx
+<option value="your_new_scenario">Your New Scenario</option>
+```
+
+4. **Add to the scenarios list** in `src/lib/devMockScenarios.ts` by updating `MOCK_SCENARIOS`:
+
+```typescript
+export const MOCK_SCENARIOS = [
+  // ... existing scenarios
+  { value: "your_new_scenario", label: "Your New Scenario", description: "Description" },
+] as const;
+```
+
+### Mock Data Files
+
+- **`src/lib/contractClient.ts`**: Contains the base mock campaign data
+- **`src/lib/devMockScenarios.ts`**: Scenario transformation logic
+- **`src/hooks/useDevMockScenario.ts`**: React hook for accessing current scenario
+- **`src/components/DevMockPanel.tsx`**: Dev-only UI for switching scenarios
+- **`src/lib/mockCauses.ts`**: Filter constants for listing pages
+
 ## ⚙️ Configuration
 
 The project uses environment variables for configuration. Create a `.env.local` file in the root directory:
@@ -174,6 +263,7 @@ To keep our translation files clean, you can run the unused keys script to find
 ```bash
 node scripts/find-unused-i18n-keys.js
 ```
+
 This script will output a report of keys present in `messages/en.json` but never referenced in `src/`.
 
 ## 🐳 Docker Support
@@ -202,7 +292,11 @@ To run the production container:
 docker run -p 3000:3000 proofofheart-frontend
 ```
 
-## 🛡 Error Reporting
+## � Observability
+
+The application includes an internal observability module for monitoring contract interactions, transaction flows, and RPC operations. See [docs/observability.md](docs/observability.md) for architecture details, event types, and instructions on adding new observability events.
+
+## �🛡 Error Reporting
 
 `src/components/ErrorBoundary.tsx` exposes an optional `onError` prop that receives a PII-safe error report (`name`, `message`, `stack`) whenever a React render error is caught.
 

docs/observability.md

@@ -0,0 +1,262 @@
+# Observability Module
+
+The observability module (`src/lib/observability/`) provides internal telemetry for monitoring contract interactions, transaction flows, and RPC operations. It captures structured events, computes failure rates, and triggers alerts when thresholds are exceeded.
+
+## Architecture
+
+The module consists of four core files plus API routes:
+
+### Core Files
+
+- **`types.ts`** - Type definitions for events, categories, kinds, metrics snapshots, and alerts
+- **`classify.ts`** - Error classification logic that converts raw errors into structured `ClassifiedFailure` objects
+- **`record.ts`** - Event construction, logging, and transmission to backend/webhook
+- **`metricsStore.ts`** - In-memory event storage, rate computation, and alert evaluation
+- **`index.ts`** - Public API exports
+
+### API Routes
+
+- **`/api/observability/events`** (POST) - Ingests observability events from the client
+- **`/api/observability/metrics`** (GET) - Returns a metrics snapshot with counters, rates, alerts, and recent events
+
+## Data Flow
+
+```
+App Error/Success
+    ↓
+classify.ts (classifySimulationFailure / classifyRpcFailure)
+    ↓
+ClassifiedFailure { category, kind, contractErrorCode?, message }
+    ↓
+record.ts (buildObservabilityEvent / buildSuccessEvent)
+    ↓
+ObservabilityEvent { id, timestamp, category, kind, operation, ... }
+    ↓
+record.ts (recordObservabilityEvent)
+    ├→ console.log (dev only)
+    ├→ POST /api/observability/events
+    └→ POST webhook (optional, via NEXT_PUBLIC_OBSERVABILITY_WEBHOOK_URL)
+    ↓
+metricsStore.ts (ingestObservabilityEvent)
+    ↓
+In-memory store (max 2000 events, FIFO eviction)
+    ↓
+GET /api/observability/metrics
+    ↓
+ObservabilityMetricsSnapshot { counters, rates, alerts, recentEvents }
+```
+
+## Event Categories and Kinds
+
+### Categories
+
+- **`contract`** - Soroban contract errors
+- **`transaction`** - Transaction lifecycle events (simulation, submission, confirmation)
+- **`rpc`** - RPC operation errors and timeouts
+
+### Kinds
+
+- **`contract_error`** - Contract execution error with `contractErrorCode` and `contractErrorKey`
+- **`simulation_failure`** - Transaction simulation failed (non-contract error)
+- **`submission_failure`** - Transaction submission to network failed
+- **`confirmation_timeout`** - Transaction confirmation timed out
+- **`confirmation_failed`** - Transaction confirmation failed
+- **`rpc_error`** - Generic RPC error
+- **`rpc_timeout`** - RPC operation timed out
+- **`transaction_success`** - Transaction completed successfully
+
+## Metrics and Alerts
+
+### Counters
+
+The module tracks:
+
+- Total events
+- Events by kind
+- Events by contract error code
+- Events by operation name
+
+### Rates
+
+Computed over a sliding time window (default 5 minutes):
+
+- `simulationFailureRate` - simulation failures / transaction attempts
+- `submissionFailureRate` - submission failures / transaction attempts
+- `rpcTimeoutRate` - RPC timeouts / RPC operations
+- `contractErrorRate` - contract errors / transaction attempts
+
+### Alerts
+
+Alerts trigger when rates exceed configurable thresholds (environment variables):
+
+- `OBSERVABILITY_ALERT_SIMULATION_FAILURE_RATE` (default: 0.15)
+- `OBSERVABILITY_ALERT_SUBMISSION_FAILURE_RATE` (default: 0.1)
+- `OBSERVABILITY_ALERT_RPC_TIMEOUT_RATE` (default: 0.2)
+
+Alert severity is `warning` at threshold and `critical` at 2× threshold. Minimum sample size of 10 events is required before alerting.
+
+## Adding a New Event Type
+
+To add a new observability event type, follow these steps:
+
+### 1. Add the Kind to `types.ts`
+
+```typescript
+// src/lib/observability/types.ts
+export type ObservabilityKind =
+  | "contract_error"
+  | "simulation_failure"
+  // ... existing kinds
+  | "your_new_kind"; // Add here
+```
+
+### 2. Add Classification Logic (if needed)
+
+If your new kind requires error classification, add a classifier in `classify.ts`:
+
+```typescript
+// src/lib/observability/classify.ts
+export function classifyYourError(error: unknown, operation?: string): ClassifiedFailure {
+  // Your classification logic here
+  return {
+    category: "transaction", // or "contract" or "rpc"
+    kind: "your_new_kind",
+    message: error instanceof Error ? error.message : String(error),
+  };
+}
+```
+
+Export the new classifier in `index.ts`:
+
+```typescript
+// src/lib/observability/index.ts
+export { classifyYourError } from "./classify";
+```
+
+### 3. Add Recording Helper (optional)
+
+For convenience, add a recording helper in `record.ts`:
+
+```typescript
+// src/lib/observability/record.ts
+export function recordYourNewKind(
+  message: string,
+  options?: { operation?: string; rpcStatus?: string; txHash?: string },
+): void {
+  recordObservabilityKind("your_new_kind", message, options);
+}
+```
+
+Export it in `index.ts`:
+
+```typescript
+// src/lib/observability/index.ts
+export {
+  // ... existing exports
+  recordYourNewKind,
+} from "./record";
+```
+
+### 4. Update Metrics Computation (if needed)
+
+If your new kind should be included in rate calculations, update `metricsStore.ts`:
+
+```typescript
+// src/lib/observability/metricsStore.ts
+function computeRates(
+  windowEvents: ObservabilityEvent[],
+  windowMs: number,
+): ObservabilityRatesSnapshot {
+  // Add your new kind to the relevant denominator or numerator
+  const yourNewKindCount = windowEvents.filter((event) => event.kind === "your_new_kind").length;
+
+  // Update the returned snapshot if you want a new rate field
+  return {
+    // ... existing rates
+    // yourNewRate: yourNewKindCount / denom,
+  };
+}
+```
+
+### 5. Add Alert Threshold (if needed)
+
+If your new kind should trigger alerts, add threshold configuration and alert logic in `metricsStore.ts`:
+
+```typescript
+// src/lib/observability/metricsStore.ts
+export function evaluateAlerts(rates: ObservabilityRatesSnapshot): ObservabilityAlert[] {
+  const yourThreshold = Number(process.env.OBSERVABILITY_ALERT_YOUR_RATE) || 0.1;
+
+  if (rates.sampleSize >= 10 && rates.yourNewRate >= yourThreshold) {
+    alerts.push({
+      id: "elevated-your-kind",
+      severity: rates.yourNewRate >= yourThreshold * 2 ? "critical" : "warning",
+      message: "Your kind rate is above the configured threshold.",
+      metric: "yourNewRate",
+      currentRate: rates.yourNewRate,
+      threshold: yourThreshold,
+      triggeredAt: now,
+    });
+  }
+
+  return alerts;
+}
+```
+
+### 6. Use the New Event Type
+
+Record events from your application code:
+
+```typescript
+import { recordYourNewKind, classifyYourError } from "@/lib/observability";
+
+// Using the classifier (if you added one)
+try {
+  await someOperation();
+} catch (error) {
+  const failure = classifyYourError(error, "someOperation");
+  recordObservabilityFailure(failure, { operation: "someOperation" });
+}
+
+// Or using the helper (if you added one)
+recordYourNewKind("Something happened", { operation: "someOperation" });
+
+// Or using the generic kind recorder
+recordObservabilityKind("your_new_kind", "Something happened", {
+  operation: "someOperation",
+});
+```
+
+## Environment Variables
+
+- `NEXT_PUBLIC_STELLAR_NETWORK` - Network name (mainnet/testnet), auto-detected from `NEXT_PUBLIC_NETWORK_PASSPHRASE` if not set
+- `NEXT_PUBLIC_OBSERVABILITY_WEBHOOK_URL` - Optional external webhook URL for event forwarding
+- `OBSERVABILITY_ALERT_SIMULATION_FAILURE_RATE` - Alert threshold for simulation failures (default: 0.15)
+- `OBSERVABILITY_ALERT_SUBMISSION_FAILURE_RATE` - Alert threshold for submission failures (default: 0.1)
+- `OBSERVABILITY_ALERT_RPC_TIMEOUT_RATE` - Alert threshold for RPC timeouts (default: 0.2)
+
+## Testing
+
+The module exports `resetObservabilityMetricsForTests()` for clearing the in-memory store between tests:
+
+```typescript
+import { resetObservabilityMetricsForTests } from "@/lib/observability";
+
+beforeEach(() => {
+  resetObservabilityMetricsForTests();
+});
+```
+
+## Storage
+
+Events are stored in-memory on the server with a maximum of 2,000 events (FIFO eviction). This is suitable for development and monitoring but not for long-term analytics. For production persistence, integrate an external error tracker (see issue #381).
+
+## API Endpoints
+
+### POST /api/observability/events
+
+Ingests an observability event. Accepts JSON matching `ObservabilityEvent` schema. Returns 202 on success.
+
+### GET /api/observability/metrics?windowMs=300000
+
+Returns a metrics snapshot. Optional `windowMs` query parameter controls the time window for rate calculations (default: 5 minutes).