chore: update .gitignore to exclude test scripts and log files

Added to .gitignore:
- test-new-api-key.js (temporary API test script)
- server.log (already added in security fix)

Prevents accidental commits of sensitive test files and logs.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: salacoste

.gitignore

@@ -54,3 +54,4 @@ Thumbs.db
 site/
 .cache/
 server.log
+test-new-api-key.js