feat: add SettingsPage with HuggingFace model search and fix flexbox layout

- Add SettingsPage component with macOS/Linear-style settings UI (sp-* classes)
- Fix HuggingFace results list squeeze: sp-card-row--full now has align-items: stretch
  overriding the inherited flex-start, ensuring children fill 100% horizontal width
- Fix sp-hf-file row layout: width 100%, grid columns for name/quant/size/download
- Fix sp-hf-name truncation: explicit overflow/ellipsis/white-space in CSS
- Add white-space: nowrap to sp-hf-size and sp-hf-quant-badge to protect secondary columns
- Add runtime-deps crate, Tailwind/PostCSS config, runtime-defaults, MessageBubble test
- Update Cargo workspace, inference-server, tauri runtime types and process handling

tauri-app/src-tauri/src/runtime/mod.rs

@@ -118,7 +118,7 @@ fn start_runtime_inner(
         inner.config.clone()
     };
 
-    let child = match spawn_localllm(&config) {
+    let child = match spawn_localllm(app, &config) {
         Ok(child) => child,
         Err(message) => {
             let mut inner = state.0.lock().map_err(|e| e.to_string())?;