fix(dashboard-agent): error instead of an empty list_projects when organizationId is missing

An empty list read as a proven absence the sweep rule would act on;
now it's an explicit error, and the fixture asserts that shape.

Author: kathiekiwi

internal-packages/dashboard-agent/src/tool-api-cross-project.test.ts

@@ -167,13 +167,16 @@ describe("list_projects org scoping", () => {
     ]);
   });
 
-  it("fails closed to an empty list when the turn has no organizationId", async () => {
+  it("errors rather than returning an empty list when the turn has no organizationId", async () => {
     vi.stubGlobal("fetch", stubProjectsFetch());
     const t = tools();
 
     const result = await (t.list_projects as any).execute({}, {} as any);
 
-    expect(result.projects).toEqual([]);
+    expect(result.projects).toBeUndefined();
+    expect(result.error).toBe(
+      "Couldn't determine this conversation's organization, so the project list is unavailable."
+    );
   });
 });
 

internal-packages/dashboard-agent/src/tool-api-transport.test.ts

@@ -13,6 +13,7 @@ const ORIGIN = "https://api.example.com";
 const CTX = {
   userActorToken: "uat",
   apiOrigin: ORIGIN,
+  organizationId: "org_1",
   projectRef: "proj_ref",
   environmentName: "prod",
 };

internal-packages/dashboard-agent/src/tool-api.ts

@@ -240,6 +240,15 @@ export function buildApiTools(args: {
       ...listProjectsSchema,
       execute: async () => {
         if (!hasAuth) return NO_AUTH;
+        // An empty `projects` here would read as "this org has no other projects" —
+        // a proven absence the sweep rule would then act on. Say the scope is
+        // unknown instead of silently narrowing it to nothing.
+        if (!organizationId) {
+          return {
+            error:
+              "Couldn't determine this conversation's organization, so the project list is unavailable.",
+          };
+        }
         const result = await apiGet(origin, "/api/v1/projects", userActorToken!);
         if (!result.ok) return { error: `Couldn't list projects${fetchReason(result)}.` };
         return curateProjects(result.data, organizationId);