feat: add Tauri state persistence and BvCli trait

- Add Tauri storage adapter for Zustand (tauri-storage.ts)
- Add read_state, write_state, clear_state Tauri commands
- Wire focus-store and nav-store to use Tauri persistence
- Add BvCli trait for bv CLI mocking with response types
- Add BvError and McError conversion for bv errors
- Add cleanup_tmp_files tests for bridge
- Fix linter-introduced tauri_specta::command issues

Closes bd-2x6, bd-gil, bd-3px

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src-tauri/src/lib.rs

@@ -15,6 +15,7 @@ use tauri::menu::{MenuBuilder, MenuItemBuilder};
 use tauri::tray::TrayIconBuilder;
 use tauri::{Emitter, Manager};
 use tauri_plugin_global_shortcut::{Code, GlobalShortcutExt, Modifiers, Shortcut, ShortcutState};
+use tauri_specta::{collect_commands, Builder};
 use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
 
 /// Toggle the main window's visibility.
@@ -101,6 +102,28 @@ pub fn run() {
 
     tracing::info!("Starting Mission Control");
 
+    // Build tauri-specta builder for type-safe IPC
+    let builder = Builder::<tauri::Wry>::new().commands(collect_commands![
+        commands::greet,
+        commands::get_lore_status,
+        commands::get_bridge_status,
+        commands::sync_now,
+        commands::reconcile,
+        commands::quick_capture,
+        commands::read_state,
+        commands::write_state,
+        commands::clear_state,
+    ]);
+
+    // Export TypeScript bindings in debug builds
+    #[cfg(debug_assertions)]
+    builder
+        .export(
+            specta_typescript::Typescript::default(),
+            "../src/lib/bindings.ts",
+        )
+        .expect("Failed to export TypeScript bindings");
+
     tauri::Builder::default()
         .plugin(tauri_plugin_shell::init())
         .plugin(
@@ -165,14 +188,7 @@ pub fn run() {
             }
             Ok(())
         })
-        .invoke_handler(tauri::generate_handler![
-            commands::greet,
-            commands::get_lore_status,
-            commands::get_bridge_status,
-            commands::sync_now,
-            commands::reconcile,
-            commands::quick_capture,
-        ])
+        .invoke_handler(builder.invoke_handler())
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
 }