* fix: remove deprecated curl_close() and imagedestroy() for PHP 8.5
PHP 8.5 deprecates curl_close(), imagedestroy(), and xml_parser_free().
Handles are automatically freed when they go out of scope.
- cli/add_site.php: remove 2 curl_close() calls
- lib/auth.php: remove curl_close() in secpass_check_pwned()
- lib/plugins.php: remove curl_close() in plugin fetch
- lib/reports.php: remove 2 imagedestroy() calls in jpeg2png/png2gif
- lib/rrd.php: remove 3 imagedestroy() calls in graph rendering
No behavioral change; resources are freed implicitly.
Made-with: Cursor
* test: add Pest tests for PHP 8.5 curl_close/imagedestroy removal
- Php85DeprecationsTest: static checks that no curl_close or imagedestroy
calls remain in the 5 changed files
- ReportsImageConversionTest: png2jpeg/png2gif produce valid output
without explicit imagedestroy (resources freed on scope exit)
Made-with: Cursor
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Co-authored-by: TheWitness <thewitness@cacti.net>
