fix(openclaw): prevent creating default provider on first launch

Add additive mode guard in import_default_config() to skip OpenCode
and OpenClaw apps, which should use their dedicated import functions.

src-tauri/src/services/provider/live.rs

@@ -402,6 +402,12 @@ pub fn read_live_settings(app_type: AppType) -> Result<Value, AppError> {
 /// Returns `Ok(true)` if a provider was actually imported,
 /// `Ok(false)` if skipped (providers already exist for this app).
 pub fn import_default_config(state: &AppState, app_type: AppType) -> Result<bool, AppError> {
+    // Additive mode apps (OpenCode, OpenClaw) should use their dedicated
+    // import_xxx_providers_from_live functions, not this generic default config import
+    if app_type.is_additive_mode() {
+        return Ok(false);
+    }
+
     {
         let providers = state.db.get_all_providers(app_type.as_str())?;
         if !providers.is_empty() {