fix: gate creation until workspace summaries load

frontend/src/workspaces/drafts.ts

@@ -12,7 +12,7 @@ export interface WorkspaceDraft {
 type PolicySelection = {
   workspaceId: string;
   generation: number;
-  state: "pending" | "ready" | "error";
+  state: "summary" | "pending" | "ready" | "error";
   error?: Error;
   settled: Promise<void>;
   settle: () => void;
@@ -23,13 +23,13 @@ type PolicySelection = {
 let selection: PolicySelection | undefined;
 let nextGeneration = 0;
 
-function pendingSelection(workspaceId: string): PolicySelection {
+function pendingSelection(workspaceId: string, state: "summary" | "pending"): PolicySelection {
   let settle!: () => void;
   let supersede!: () => void;
   return {
     workspaceId,
     generation: ++nextGeneration,
-    state: "pending",
+    state,
     settled: new Promise<void>((resolve) => { settle = resolve; }),
     settle,
     superseded: new Promise<void>((resolve) => { supersede = resolve; }),
@@ -39,10 +39,30 @@ function pendingSelection(workspaceId: string): PolicySelection {
 
 /** In-memory coordination between the footer's selected policy and session creation. */
 export const workspacePolicyGate = {
-  select(workspaceId: string): void {
-    if (selection?.workspaceId === workspaceId) return;
+  beginSummary(workspaceId: string): void {
+    if (selection?.workspaceId === workspaceId && selection.state === "summary") return;
     selection?.supersede();
-    selection = pendingSelection(workspaceId);
+    selection = pendingSelection(workspaceId, "summary");
+  },
+
+  select(workspaceId: string): void {
+    if (selection?.workspaceId === workspaceId) {
+      if (selection.state === "summary") selection.state = "pending";
+      if (selection.state === "pending") return;
+    }
+    selection?.supersede();
+    selection = pendingSelection(workspaceId, "pending");
+  },
+
+  allowLegacy(workspaceId: string): void {
+    if (selection?.workspaceId !== workspaceId) {
+      this.clear();
+      return;
+    }
+    if (selection.state === "summary") {
+      selection.state = "ready";
+      selection.settle();
+    }
   },
 
   clear(): void {