## Summary
- Extracts credentials from WebSocket URL (`ws://user:pass@host`) and
sends them as Basic Authorization header
- User-provided `Authorization` header takes precedence over URL
credentials
- Credentials are properly URL-decoded before being Base64-encoded
Fixes#24388
## Test plan
- [x] Added regression test `test/regression/issue/24388.test.ts` with 5
test cases:
- Basic credentials in URL
- Empty password
- No credentials (no header sent)
- Custom Authorization header takes precedence
- Special characters (URL-encoded) in credentials
- [x] Tests pass with `bun bd test test/regression/issue/24388.test.ts`
- [x] Tests fail with `USE_SYSTEM_BUN=1 bun test` (confirming the bug
existed)
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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
