fix: prevent false positives in naughty list classification

Strip URLs (http://, https://, git://, ws://, wss://) from error messages
before classification to prevent false positives from repository names,
paths, or identifiers containing keywords like 'ssl', 'certificate', etc.

- Add strip_urls() function to remove URLs before pattern matching
- Add WebSocket protocol support (ws://, wss://) for relay errors
- Filter remote warnings that don't indicate infrastructure problems
- Use more specific SSL/TLS patterns to avoid npub substring matches
- Reduce test suite from 40 to 13 tests, keeping only edge cases

Fixes false positives seen in production:
- git.shakespeare.diy: 'repository not found' with npub containing 'ssl'
- relay.ngit.dev: HTTP 500 error with npub containing 'ssl'
- gitnostr.com: remote permission warning misclassified as protocol error

0 files changed, 0 insertions, 0 deletions