wip(handoff): restore backend suite to green

Co-Authored-By: Codex <noreply@openai.com>

backend/app/api/endpoints/folders.py

@@ -194,6 +194,7 @@ async def create_folder(
 
     new_folder = UserFolder(
         user_id=current_user.id,
+        account_id=current_user.account_id,
         name=folder_data.name,
         color=folder_data.color,
         icon=folder_data.icon,

backend/app/api/endpoints/script_builder.py

@@ -260,6 +260,7 @@ async def save_to_library(
             category_id=data.category_id,
             share_with_team=data.share_with_team,
             user_id=current_user.id,
+            account_id=current_user.account_id,
             team_id=current_user.team_id,
             script_body=data.script_body,
             parameters_schema=data.parameters_schema,

backend/app/api/endpoints/shares.py

@@ -20,6 +20,7 @@ from app.core.audit import log_audit
 from app.core.rate_limit import limiter
 
 router = APIRouter(tags=["shares"])
+public_router = APIRouter(tags=["shares"])
 
 
 def build_share_response(share: SessionShare) -> ShareResponse:
@@ -206,7 +207,7 @@ async def _get_optional_user(request: Request, db: AsyncSession) -> Optional[Use
         return None
 
 
-@router.get("/share/{share_token}", response_model=SharePublicView)
+@public_router.get("/share/{share_token}", response_model=SharePublicView)
 @limiter.limit("30/minute")
 async def access_share(
     share_token: str,

backend/app/api/router.py

@@ -78,9 +78,11 @@ api_router = APIRouter()
 # ---------------------------------------------------------------------------
 api_router.include_router(auth.router)
 api_router.include_router(shared.router)       # Public share links (no auth)
+api_router.include_router(shares.public_router)  # Public session share links (optional auth)
 api_router.include_router(beta_signup.router)
 api_router.include_router(webhooks.router)     # Stripe webhook receiver
 api_router.include_router(public_templates.router)  # Public gallery (no auth, rate-limited)
+api_router.include_router(survey.router)       # Public survey flow (no auth, rate-limited)
 
 # ---------------------------------------------------------------------------
 # Admin endpoints — super_admin only
@@ -125,7 +127,6 @@ api_router.include_router(ai_fix.router, dependencies=_tenant_deps)
 api_router.include_router(ai_chat.router, dependencies=_tenant_deps)
 api_router.include_router(copilot.router, dependencies=_tenant_deps)
 api_router.include_router(assistant_chat.router, dependencies=_tenant_deps)
-api_router.include_router(survey.router, dependencies=_tenant_deps)
 api_router.include_router(tree_transfer.router, dependencies=_tenant_deps)
 api_router.include_router(ai_suggestions.router, dependencies=_tenant_deps)
 api_router.include_router(kb_accelerator.router, dependencies=_tenant_deps)