[codex] fix desktop release build

[pranc1ngpegasus]

Summary

Fixes the macOS release build failure from the v0.0.9 release workflow by bringing the desktop setup and recording-start wiring back in sync with the current app and session APIs.

Root Cause

The desktop UI had gained recognizer setup callbacks and local model UI, but AppModel no longer carried the setup state those views expected. At the same time, recording start still passed a plain locale string even though SessionRunner::start now requires a SessionConfig.

Changes

• Restore setup state on AppModel, including recognizer selection, local model status, download state, and completion checks.
• Wire setup refresh, recognizer selection, and local model download callbacks into TranscriptView from main.rs.
• Start recordings with a SessionConfig generated from the selected setup state.
• Make local model size rendering independent of match binding mode.

Validation

• nix develop .#ci --quiet -c cargo fmt --check
• nix develop .#ci --quiet -c cargo check -p wisp-desktop --features gpui/runtime_shaders
• nix develop .#ci --quiet -c cargo test -p wisp-desktop --features gpui/runtime_shaders