Let Kaku users launch sessions from their chosen terminal (#1954) (#1983)

Kaku is a WezTerm-derived macOS terminal, so reusing the existing WezTerm-compatible launch path keeps the change small while making it selectable in settings and session resume flows.

Constraint: Kaku support should stay macOS-only and avoid introducing a separate launcher model
Rejected: Treat Kaku as a silent WezTerm fallback | users could not explicitly choose it in settings
Confidence: high
Scope-risk: narrow
Reversibility: clean
Directive: Keep Kaku on the shared WezTerm-compatible launch path unless upstream drops the start-compatible CLI
Tested: pnpm typecheck; pnpm format:check; cargo check --manifest-path src-tauri/Cargo.toml; cargo fmt --manifest-path src-tauri/Cargo.toml --check; cargo test --manifest-path src-tauri/Cargo.toml --lib session_manager::terminal::tests
Not-tested: End-to-end launch against a locally installed Kaku.app
Related: #1954

src/types.ts

@@ -313,7 +313,7 @@ export interface Settings {
 
   // ===== 终端设置 =====
   // 首选终端应用（可选，默认使用系统默认终端）
-  // macOS: "terminal" | "iterm2" | "warp" | "alacritty" | "kitty" | "ghostty"
+  // macOS: "terminal" | "iterm2" | "warp" | "alacritty" | "kitty" | "ghostty" | "wezterm" | "kaku"
   // Windows: "cmd" | "powershell" | "wt"
   // Linux: "gnome-terminal" | "konsole" | "xfce4-terminal" | "alacritty" | "kitty" | "ghostty"
   preferredTerminal?: string;