Tests all 4 SSL methods with actual project libraries:
- httpx (verify=True/False/SSLContext cafile/cafile+capath)
- requests (verify=True/False/cafile/capath)
- openssl s_client (default/CAfile/CApath/chain bundle)
- certutil (NSS/Chromium)
- certifi vs system CA comparison
Outputs JSON summary with AI diagnosis hint.