[eric] apps: link node_modules on import so imported backend apps boot first time, no restart

backend/apps/outputs/view_builder_templates.py

@@ -374,7 +374,7 @@ def p_try_link_dir(src: str, target: str) -> bool:
         return False
 
 
-def p_link_node_modules(workspace_dir: str) -> None:
+def link_node_modules(workspace_dir: str) -> None:
     """After copytree, point the workspace's frontend/node_modules at
     the warm-cache directory. Safe fallback; if the cache isn't ready,
     the workspace's run.sh will fall through to its own install path."""
@@ -570,7 +570,7 @@ def seed_webapp_template_workspace(workspace_dir: str, frontend_port: int) -> No
         dirs_exist_ok=True,
     )
     # Symlink the workspace's frontend/node_modules at the warm cache so `npm install` can be skipped entirely by the workspace run.sh.
-    p_link_node_modules(workspace_dir)
+    link_node_modules(workspace_dir)
     env_path = os.path.join(workspace_dir, ".env")
     env_example_path = os.path.join(workspace_dir, ".env.example")
     src_example = os.path.join(WEBAPP_TEMPLATE_DIR, ".env.example")

backend/apps/swarm/entities/apps.py

@@ -146,6 +146,7 @@ def p_localize_env(folder: str) -> None:
         from backend.apps.outputs.view_builder_templates import (
             DEBUGGER_PATH,
             TEMPLATE_BACKEND_PATH,
+            link_node_modules,
             patch_env_port,
             warm_venv_dir,
         )
@@ -158,3 +159,8 @@ def p_localize_env(folder: str) -> None:
         patch_env_port(env_path, "OPENSWARM_BACKEND_VENV_CACHE", warm_venv_dir())
     except Exception:
         pass
+    # Imported apps arrive WITHOUT node_modules (export drops the warm-cache symlink), so relink it here like seed does; without it the first runtime boot npm-installs while the preview races onto a not-yet-bound port, so the app stays blank until a full restart.
+    try:
+        link_node_modules(folder)
+    except Exception:
+        pass