wip(handoff): restore backend suite to green

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

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)