@W-19978113@

This adds a robust error capture and reporting system for LWC local
development that captures runtime errors from the browser and displays
them formatted in the terminal.

Features:
- ErrorStore: In-memory store for runtime errors with deduplication
- Error Capture HTTP Server: Standalone server on LWC port + 1
- Error Middleware: Express middleware for capturing/querying errors
- Error Formatter: CLI-friendly formatted error output with colors
- Stack Trace Utils: Parse and sanitize stack traces

Components:
- src/lwc-dev-server/errorStore.ts: Error storage with statistics
- src/lwc-dev-server/errorHttpServer.ts: HTTP server for error endpoints
- src/lwc-dev-server/errorMiddleware.ts: Express middleware
- src/shared/errorFormatter.ts: Format errors for terminal display
- src/shared/stackTraceUtils.ts: Stack trace parsing utilities
- src/types/errorPayload.ts: TypeScript types for error diagnostics

Testing:
- Comprehensive unit tests for all error capture components
- E2E tests for error capture workflow
- Test fixtures for validation

Updated:
- package.json: Added express dependency
- src/lwc-dev-server/index.ts: Integrated error capture server
- yarn.lock: Updated dependencies

Error Capture Endpoints:
- POST   /_dev/errors       - Capture error reports
- GET    /_dev/errors       - Query errors with filters
- DELETE /_dev/errors       - Clear all errors
- GET    /_dev/errors/stats - Get error statistics
- GET    /_dev/health       - Health check

Auto-clears errors on server restart. Can also manually clear via
DELETE endpoint.

… logs

- Remove verbose console logs on error capture server startup
- Add server-side cleanup for _clientParsedStack field (client-only data)
- Keep filtered stack traces (show local source only, hide framework code)
- Improve code documentation and comments