feat(flow): session routing contract 정리

src/widgets/space-workspace/ui/SpaceWorkspaceWidget.tsx

@@ -39,6 +39,7 @@ import { FocusTopToast } from "./FocusTopToast";
 export const SpaceWorkspaceWidget = () => {
   const searchParams = useSearchParams();
   const router = useRouter();
+  const resumeIntent = searchParams.get("resume");
   const sceneQuery = searchParams.get("scene") ?? searchParams.get("room");
   const goalQuery = searchParams.get("goal")?.trim() ?? "";
   const focusPlanItemIdQuery = searchParams.get("planItemId");
@@ -222,6 +223,8 @@ export const SpaceWorkspaceWidget = () => {
     workspaceMode === "setup" &&
     showReviewTeaserAfterComplete &&
     hasEnoughWeeklyData;
+  const allowsPausedReentry =
+    resumeIntent === "continue" || resumeIntent === "refocus";
   const secondaryReviewTeaser = shouldShowSecondaryReviewTeaser
     ? {
         title: isPro
@@ -242,6 +245,16 @@ export const SpaceWorkspaceWidget = () => {
     }
   }, [isBootstrapping, currentSession, hasQueryOverrides, router]);
 
+  useEffect(() => {
+    if (isBootstrapping || !currentSession) {
+      return;
+    }
+
+    if (currentSession.state === "paused" && !allowsPausedReentry) {
+      router.replace("/app");
+    }
+  }, [allowsPausedReentry, currentSession, isBootstrapping, router]);
+
   useEffect(() => {
     const preferMobile =
       typeof window !== "undefined"