Restore generic Studio object navigation and discovery

src/execution-world/plan.ts

@@ -381,6 +381,27 @@ export function compileExecutionPlan(input: WorkspaceRevision): ExecutionPlan {
         query.id,
         "Local and replica queries must use the same root contract",
       );
+    if (localRoot.kind === "workspace-interface") {
+      const sourceWindows = source.query.checked.selection
+        .flatMap((root) => root.selection)
+        .filter((s) => s.name === "objects");
+      for (const selection of query.query.checked.selection
+        .flatMap((root) => root.selection)
+        .filter((s) => s.name === "objects")) {
+        if (
+          !sourceWindows.some(
+            (window) =>
+              canonicalJson({ arguments: window.arguments, conditions: window.conditions }) ===
+              canonicalJson({ arguments: selection.arguments, conditions: selection.conditions }),
+          )
+        )
+          throw new ExecutionPlanError(
+            "REPLICA_WINDOW_MISMATCH",
+            query.id,
+            "Local objects must observe the identical confirmed source window; use availableObjects for a local candidate view",
+          );
+      }
+    }
     const traversals = (linked: LinkedQuery) => {
       const paths = new Map<string, { complete: boolean; requiresComplete: boolean; windows: Set<string> }>();
       const entry = (key: string) => {

src/query/root.ts

@@ -27,7 +27,7 @@ export function queryRootSchema(root: QueryRoot, interfaces: readonly InterfaceR
       {
         kind: "relationship",
         id: workspaceObjectsMemberId,
-        displayName: local ? "availableObjects" : "objects",
+        displayName: "objects",
         target: { kind: "interface", interfaceRevisionId: root.interface },
         cardinality: "many-unique",
         ordered: false,
@@ -36,5 +36,8 @@ export function queryRootSchema(root: QueryRoot, interfaces: readonly InterfaceR
       },
     ],
   };
+  // Local objects observes the confirmed server window. availableObjects is the
+  // separate opt-in view that also includes pending local candidates.
+  if (local) synthetic.members.push({ ...synthetic.members[0]!, displayName: "availableObjects" });
   return { interface: synthetic.revisionId, interfaces: [...interfaces, synthetic] };
 }