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## Summary Enhanced telemetry system to capture actual error messages for debugging while implementing comprehensive security hardening to protect sensitive data. ## Changes - Added optional errorMessage parameter to trackError() method - Implemented sanitizeErrorMessage() with 7-layer security protection - Updated all production and test call sites (atomic change) - Added 18 new security-focused tests ## Security Fixes - ReDoS Prevention: Early truncation + simplified regex patterns - Full URL Redaction: Changed [URL]/path → [URL] to prevent leakage - Credential Detection: AWS keys, GitHub tokens, JWT, Bearer tokens - Correct Sanitization Order: URLs → credentials → emails → generic - Error Handling: Try-catch wrapper with [SANITIZATION_FAILED] fallback ## Impact - Resolves 272+ weekly errors with no error messages - Protects against ReDoS attacks - Prevents API structure and credential leakage - 90.75% test coverage, 269 tests passing 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>