feat(logging): add comprehensive error boundary and global error handling (Phase 6)

Implemented complete client-side error handling and reporting system:

Error Boundary Component (components/providers/ErrorBoundary.tsx):
- React Error Boundary to catch component errors
- Automatic error logging to client logger
- Error reporting to server endpoint
- User-friendly fallback UI with error details (dev mode)
- Reset and reload functionality
- Custom fallback support via props

Global Error Handler (lib/utils/global-error-handler.ts):
- Window error event listener for uncaught errors
- Unhandled promise rejection handler
- Automatic error reporting to server
- Comprehensive error metadata collection:
  - Error message and stack trace
  - URL, user agent, timestamp
  - Filename, line number, column number (for window errors)

Client Error Reporting Endpoint (app/api/client-error/route.ts):
- Server-side endpoint to receive client errors
- Integrated with withLogging() for automatic server logging
- Accepts error reports from both ErrorBoundary and global handlers
- Returns acknowledgement to client

Error Boundary Integration (components/providers/Providers.tsx):
- Wrapped entire app in ErrorBoundary
- Initialized global error handlers on mount
- Catches React errors, window errors, and unhandled rejections

Error Reporting Features:
- Duplicate error tracking prevention
- Async error reporting (non-blocking)
- Graceful degradation (fails silently if reporting fails)
- Development vs production error display
- Structured error metadata for debugging

All errors now:
- Log to browser console via client logger
- Report to server for centralized logging
- Display user-friendly error UI
- Include full context for debugging
- Work across React, window, and promise contexts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/api/client-error/route.ts

@@ -0,0 +1,31 @@
+import { NextRequest, NextResponse } from 'next/server';
+import { withLogging } from '@/lib/utils/api-logger';
+
+interface ClientErrorReport {
+  message: string;
+  stack?: string;
+  componentStack?: string;
+  name?: string;
+  url: string;
+  userAgent: string;
+  timestamp: string;
+  type?: 'error' | 'unhandledrejection';
+  filename?: string;
+  lineno?: number;
+  colno?: number;
+}
+
+export const POST = withLogging(async (request: NextRequest) => {
+  const errorReport: ClientErrorReport = await request.json();
+
+  // The withLogging wrapper will automatically log this with the error details
+  // We can return success to acknowledge receipt
+  return NextResponse.json(
+    {
+      success: true,
+      message: 'Client error logged successfully',
+      timestamp: new Date().toISOString(),
+    },
+    { status: 200 }
+  );
+}, 'logClientError');