feat(tui): add usage overlay and sidebar for displaying usage statistics and tasks

feat(tui): implement status bar with connection and turn state indicators
feat(tui): create workflow panel for agent status and progress visualization
feat(web): introduce web frontend interface with static file serving
feat(ws): add WebSocket interface for real-time communication and session management

apps/gateway/src/bin/seed.rs

@@ -0,0 +1,59 @@
+//! Database seeder binary.
+//!
+//! Initialises the store directory structure and creates default
+//! configuration files plus a seed session for development/testing.
+//! Invoked as `cargo run --bin seed`.
+
+fn main() -> anyhow::Result<()> {
+    let store = zesdex_domain::core::Store::new();
+    store.ensure_dirs()?;
+
+    // Create default settings if not present
+    let settings_path = store.base_dir.join("settings.json");
+    if !settings_path.exists() {
+        let settings = zesdex_domain::cms::Settings::default();
+        let content = serde_json::to_string_pretty(&settings)?;
+        let tmp = store.base_dir.join("settings.json.tmp");
+        std::fs::write(&tmp, content)?;
+        let f = std::fs::File::open(&tmp)?;
+        f.sync_all()?;
+        std::fs::rename(&tmp, settings_path)?;
+        println!("Default settings created");
+    } else {
+        println!("Settings already exist, skipping");
+    }
+
+    // Create default app config if not present
+    let config_path = store.base_dir.join("app_config.json");
+    if !config_path.exists() {
+        let config = zesdex_domain::cms::AppConfig::default();
+        let content = serde_json::to_string_pretty(&config)?;
+        let tmp = store.base_dir.join("app_config.json.tmp");
+        std::fs::write(&tmp, content)?;
+        let f = std::fs::File::open(&tmp)?;
+        f.sync_all()?;
+        std::fs::rename(&tmp, config_path)?;
+        println!("Default app_config created");
+    } else {
+        println!("App config already exists, skipping");
+    }
+
+    // Create data directories
+    std::fs::create_dir_all(&store.memory_dir)?;
+    std::fs::create_dir_all(&store.session_images_dir)?;
+    println!("All store directories verified");
+
+    // Create a seed session
+    let session_id = uuid::Uuid::new_v4().to_string();
+    let session = zesdex_domain::auth::Session::new(
+        session_id.clone(),
+        "Seed Session".to_string(),
+    );
+    // Persist via the session repository
+    use zesdex_domain::SessionRepository;
+    let repo = zesdex_infrastructure::persistence::iam::session_repo::FileSystemSessionRepository::new();
+    repo.save_session(&store.base_dir, &session)?;
+    println!("Seed session created: id={session_id}");
+
+    Ok(())
+}