fix: livrable tickets #70 #100 #102 — UX surface scoping

- #70: implémentation suppression modèles locaux téléchargés
- #100: correction scroll OpenCode
- #102: correction fit TUI après switch/layout
- memory note scoping UX

crates/app-tauri/src/commands.rs

@@ -1339,6 +1339,7 @@ pub async fn save_model_server(
         .map_err(ErrorDto::from)?
         .servers
         .into_iter()
+        .map(|item| item.config)
         .find(|config| config.id == server_id);
     let input = save_model_server_input(request, existing.as_ref())?;
     state
@@ -1388,6 +1389,26 @@ pub async fn delete_model_server(
         .map_err(model_server_command_error)
 }
 
+/// `delete_model_artifact` — delete a managed downloaded model artifact while
+/// keeping the local model-server config.
+///
+/// # Errors
+/// Returns `invalid` for non-managed `localPath` sources, `model_server_in_use`
+/// when a download or live agent blocks deletion, and model-server errors for
+/// cache I/O failures.
+#[tauri::command]
+pub async fn delete_model_artifact(
+    server_id: String,
+    state: State<'_, AppState>,
+) -> Result<(), ErrorDto> {
+    let server_id = parse_model_server_id(&server_id)?;
+    state
+        .delete_model_artifact
+        .execute(application::DeleteModelArtifactInput { server_id })
+        .await
+        .map_err(model_server_command_error)
+}
+
 fn model_server_command_error(err: AppError) -> ErrorDto {
     match err {
         AppError::ModelServer { code, message } => ErrorDto { code, message },

crates/app-tauri/src/lib.rs

@@ -265,6 +265,7 @@ pub fn run() {
             commands::save_model_server,
             commands::preview_model_server_command,
             commands::delete_model_server,
+            commands::delete_model_artifact,
             commands::list_embedder_profiles,
             commands::save_embedder_profile,
             commands::delete_embedder_profile,