Initial commit: Triple-C app, container, and CI

Tauri v2 desktop app (React/TypeScript + Rust) for managing
containerized Claude Code environments. Includes Gitea Actions
workflow for building and pushing the sandbox container image,
and a BUILDING.md guide for manual app builds on Linux and Windows.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/src-tauri/src/lib.rs

@@ -0,0 +1,52 @@
+mod commands;
+mod docker;
+mod models;
+mod storage;
+
+use docker::exec::ExecSessionManager;
+use storage::projects_store::ProjectsStore;
+
+pub struct AppState {
+    pub projects_store: ProjectsStore,
+    pub exec_manager: ExecSessionManager,
+}
+
+pub fn run() {
+    env_logger::init();
+
+    tauri::Builder::default()
+        .plugin(tauri_plugin_store::Builder::default().build())
+        .plugin(tauri_plugin_dialog::init())
+        .plugin(tauri_plugin_opener::init())
+        .manage(AppState {
+            projects_store: ProjectsStore::new(),
+            exec_manager: ExecSessionManager::new(),
+        })
+        .invoke_handler(tauri::generate_handler![
+            // Docker
+            commands::docker_commands::check_docker,
+            commands::docker_commands::check_image_exists,
+            commands::docker_commands::build_image,
+            commands::docker_commands::get_container_info,
+            commands::docker_commands::list_sibling_containers,
+            // Projects
+            commands::project_commands::list_projects,
+            commands::project_commands::add_project,
+            commands::project_commands::remove_project,
+            commands::project_commands::update_project,
+            commands::project_commands::start_project_container,
+            commands::project_commands::stop_project_container,
+            commands::project_commands::rebuild_project_container,
+            // Settings
+            commands::settings_commands::set_api_key,
+            commands::settings_commands::has_api_key,
+            commands::settings_commands::delete_api_key,
+            // Terminal
+            commands::terminal_commands::open_terminal_session,
+            commands::terminal_commands::terminal_input,
+            commands::terminal_commands::terminal_resize,
+            commands::terminal_commands::close_terminal_session,
+        ])
+        .run(tauri::generate_context!())
+        .expect("error while running tauri application");
+}