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* feat(settings): add proxy support for model downloads and update checks Add a Proxy page to Settings (above About) with Off / System / Manual modes. Manual mode supports SOCKS5 and HTTPS (HTTP CONNECT) proxies with optional username/password auth; the password is stored in config.json in plaintext like the other settings. System mode honors the *_proxy environment variables and falls back to the GNOME org.gnome.system.proxy manual configuration. The resolved proxy is applied to every in-app outbound path that fetches models or checks updates: the shared requests download path in recognition_manager (_stream_model_download, used by the whisper.cpp, whisper, Vosk, Parakeet and faster-whisper downloaders) and the release checks in update_checker. A small Test Connection button on the Proxy page verifies reachability through the configured proxy. SOCKS5 needs PySocks, added as a runtime dependency; uv.lock, the requirements/*.txt exports and the Flatpak dependency manifest are regenerated by just lock (with a fix in sync_flatpak_deps.py for packages like PySocks that publish more than one universal wheel). Fixes #655 * fix(proxy): bracket IPv6 hosts, escape test errors, declare pysocks for AUR --------- Co-authored-by: Jatin K Malik <jatinkrmalik@gmail.com>