fix(build): add missing SystemConfiguration framework linkage

fix(net): enable system proxy support for model downloads (#43)

fix(model): make download cancellation responsive during network issues (#41) (#42)

fix(core): propagate ASR errors and fail session with partial text (#33)

fix(wizard): match runtime LLM request in test button (#34)

fix(wizard): check config save return values and report failures (#35)

feat(model): unified model status API with sha256 cache and async UI (#36)

fix(mlx): add generation counter to prevent stale session operations (#38)

fix(statusbar): use Rust FFI for resolved hotkey display (#37)

fix(clippy): resolve all clippy errors and warnings (#32)

fix(asr): surface real ASR errors instead of generic message (#31)

perf(asr): cache MLX model across sessions to avoid repeated loads (#30)

fix(model): skip sha256 check for non-LFS files in manifest pull (#29)

fix(core): isolate sessions to prevent old/new interference (#28)

fix(asr): prevent use-after-free in MLX callback on cancel (#27)