fix: Auto-delete API credentials when uninstalling plugin

Automatically remove plugin provider credentials on uninstall to prevent
orphaned keys from being restored when plugin is reinstalled.

Fixes #27531

api/controllers/console/workspace/plugin.py

@@ -826,3 +826,29 @@ class PluginReadmeApi(Resource):
         return jsonable_encoder(
             {"readme": PluginService.fetch_plugin_readme(tenant_id, args.plugin_unique_identifier, args.language)}
         )
+
+
+class ParserUninstall(BaseModel):
+    plugin_installation_id: str = Field(..., description="Plugin installation ID")
+
+
+console_ns.schema_model(
+    ParserUninstall.__name__, ParserUninstall.model_json_schema(ref_template=DEFAULT_REF_TEMPLATE_SWAGGER_2_0)
+)
+
+
+@console_ns.route("/workspaces/current/plugin/uninstall")
+class PluginUninstallApi(Resource):
+    @console_ns.expect(console_ns.models[ParserUninstall.__name__])
+    @setup_required
+    @login_required
+    @account_initialization_required
+    @plugin_permission_required(install_required=True)
+    def post(self):
+        _, tenant_id = current_account_with_tenant()
+        args = ParserUninstall.model_validate(console_ns.payload)
+
+        try:
+            return {"success": PluginService.uninstall(tenant_id, args.plugin_installation_id)}
+        except PluginDaemonClientSideError as e:
+            raise ValueError(e)

api/services/plugin/plugin_service.py

@@ -505,7 +505,38 @@ class PluginService:
 
     @staticmethod
     def uninstall(tenant_id: str, plugin_installation_id: str) -> bool:
+        from extensions.ext_database import db
+        from models.provider import ProviderCredential
+        from sqlalchemy import select
+
         manager = PluginInstaller()
+
+        # Get plugin info before uninstalling to delete associated credentials
+        try:
+            plugins = manager.list_plugins(tenant_id)
+            plugin = next((p for p in plugins if p.installation_id == plugin_installation_id), None)
+
+            if plugin:
+                plugin_id = plugin.plugin_id
+                logger.info(f"Deleting credentials for plugin: {plugin_id}")
+
+                # Delete provider credentials that match this plugin
+                credentials = db.session.scalars(
+                    select(ProviderCredential).where(
+                        ProviderCredential.tenant_id == tenant_id,
+                        ProviderCredential.provider_name.like(f"{plugin_id}/%"),
+                    )
+                ).all()
+
+                for cred in credentials:
+                    db.session.delete(cred)
+
+                db.session.commit()
+                logger.info(f"Deleted {len(credentials)} credentials for plugin: {plugin_id}")
+        except Exception as e:
+            logger.warning(f"Failed to delete credentials: {e}")
+            # Continue with uninstall even if credential deletion fails
+
         return manager.uninstall(tenant_id, plugin_installation_id)
 
     @staticmethod