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src/lib/workspace.ts

@@ -90,8 +90,42 @@ export function loadWorkspaceFromLocalStorage(id: string): Workspace {
 export function saveWorkspaceToLocalStorage(workspace: Workspace): void {
   try {
     const serialized = JSON.stringify(workspace);
+    // keep using raw id for backwards compatibility
     localStorage.setItem(workspace.id, serialized);
   } catch (err) {
     console.error("Failed to save workspace:", err);
   }
 }
+
+/**
+ * Scan localStorage and return all entries that appear to be workspaces.
+ * We ignore keys starting with "route_" which are used for routing state.
+ */
+export function listWorkspaces(): Workspace[] {
+  const workspaces: Workspace[] = [];
+  for (let i = 0; i < localStorage.length; i++) {
+    const key = localStorage.key(i);
+    if (!key) continue;
+    if (key.startsWith("route_")) continue;
+
+    const raw = localStorage.getItem(key);
+    if (!raw) continue;
+
+    try {
+      const parsed = JSON.parse(raw);
+      if (
+        parsed &&
+        typeof parsed === "object" &&
+        typeof parsed.id === "string" &&
+        typeof parsed.name === "string" &&
+        parsed.entities &&
+        parsed.layout
+      ) {
+        workspaces.push(parsed as Workspace);
+      }
+    } catch {
+      // ignore non-json values
+    }
+  }
+  return workspaces;
+}