[eric] onboarding: sidebar can't cover the flow, managed pro lane isn't a user connection, aux-less prep re-runs on real connect; tools pane header slimmed

backend/apps/onboarding/models.py

@@ -75,3 +75,5 @@ class PrepResponse(BaseModel):
     automations: List[PersonalizedAutomation] = Field(default_factory=list)
     # The hero's two-level menu (4 categories x 4 tailored starters); None only if prep never ran.
     menu: Optional[PersonalizedMenu] = None
+    # False = scan-grounded fallback (no aux lane at call time); lets the pipeline re-run prep once a real connect lands.
+    used_llm: bool = False

backend/apps/onboarding/prep.py

@@ -390,6 +390,7 @@ async def build_prep(settings: AppSettings, request: PrepRequest) -> PrepRespons
         parsed = parse_prep(safe_resp_text(resp))
         if parsed is not None:
             parsed.menu = await menu_task
+            parsed.used_llm = True
             return parsed
     except Exception:
         pass