Petru Paler 5ec3aba8b3 Implement structured logging with pino (P2.17) ...

Add pino-based logger module for production observability:
- JSON output to stdout for log aggregators (Loki, ELK)
- Configurable via LOG_LEVEL environment variable (defaults to "info")
- Log levels: error, warn, info, debug
- Error objects serialized with type, message, and stack trace
- Child logger support for bound context
- ISO 8601 timestamps in all log entries

Test coverage: 16 tests covering JSON format, log levels, error
serialization, and child loggers.

Total tests now: 553 passing across 31 test files.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-11 08:29:31 +00:00

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