fix(tui): resolve remaining clippy errors in workspace

- turn.rs: remove needless ref borrowing
- view/mod.rs: use unit struct directly instead of ::default() for
  ChatComponent, InputComponent, StatusBarComponent, SidebarComponent

These were uncovered after fixing the infrastructure crate errors.

apps/interfaces/tui/src/turn.rs

@@ -23,7 +23,7 @@ fn resolve_api_key(state: &AppStateRest, provider_name: &str) -> String {
     if let Some(key) = state.settings.api_keys.get(provider_name) {
         return key.clone();
     }
-    if let Some(ref cfg) = state.app_config.providers.get(provider_name) {
+    if let Some(cfg) = state.app_config.providers.get(provider_name) {
         if let Some(ref default_key) = cfg.default_api_key {
             if !default_key.is_empty() {
                 return default_key.clone();