feat(draft): add local autosave + restore prompt + publish label

atomizer-dashboard/frontend/src/hooks/useSpecStore.ts

@@ -63,6 +63,9 @@ interface SpecStoreActions {
   // WebSocket integration - set spec directly without API call
   setSpecFromWebSocket: (spec: AtomizerSpec, studyId?: string) => void;
 
+  // Local draft integration (S2) - set spec locally (no API call) and mark dirty
+  setSpecLocalDraft: (spec: AtomizerSpec, studyId?: string) => void;
+
   // Full spec operations
   saveSpec: (spec: AtomizerSpec) => Promise<void>;
   replaceSpec: (spec: AtomizerSpec) => Promise<void>;
@@ -402,6 +405,20 @@ export const useSpecStore = create<SpecStore>()(
         });
       },
 
+      // Set spec locally as a draft (no API call). This is used by DraftManager (S2).
+      // Marks the spec as dirty to indicate "not published".
+      setSpecLocalDraft: (spec: AtomizerSpec, studyId?: string) => {
+        const currentStudyId = studyId || get().studyId;
+        console.log('[useSpecStore] Setting spec from local draft:', spec.meta?.study_name);
+        set({
+          spec,
+          studyId: currentStudyId,
+          isLoading: false,
+          isDirty: true,
+          error: null,
+        });
+      },
+
       // =====================================================================
       // Full Spec Operations
       // =====================================================================