1.1 Backend data model and migrations (el-5fe)

apps/api/src/models/config_folder.py

@@ -26,6 +26,8 @@ class ConfigFolder(UUIDPrimaryKeyMixin, TimestampMixin, Base):
     project_overrides: Mapped[dict | None] = mapped_column(
         JSON, default=dict, nullable=True
     )  # {"project_id": {"mount_path": "...", "files": {...}}}
+    # DEPRECATED: Legacy auto-mounting flag. No longer used for launch-time
+    # auto-mounting. Use ConfigProfile and ToolInstance.selected_profile_id instead.
     is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
 
     user: Mapped["User"] = relationship()