v0.9.7

What's Changed

• Free models filter — press 4 to filter free models on the Models tab. Renumbered filter keys: 1-3 reasoning/tools/open, 4 free, 5 category, 6 grouping. Added Shift+S to toggle sort direction. (Closes #4, thanks @yashwanth2804!)
• TLS corporate proxy support — switched from bundled webpki roots to OS trust store (rustls-tls-native-roots), fixing TLS failures behind corporate proxies like Zscaler. (Closes #7, thanks @oreid-zd!)

Full Changelog: v0.9.6...v0.9.7