fix(mail): search every owned job

Replace ineffective pageSize=100 selectors with a bounded owner-filtered search endpoint for composing and moving linked threads.

job-tracker-ui/src/correspondence-gmail-import.test.tsx

@@ -51,28 +51,20 @@ describe("correspondence Gmail import", () => {
     correspondenceMessages = [];
 
     mockedApi.get.mockImplementation((url: string, config?: any) => {
-      if (url === "/jobapplications") {
+      if (url === "/jobapplications/choices") {
         return Promise.resolve({
-          data: {
-            items: [
+          data: [
               {
                 id: 42,
                 jobTitle: "Backend Developer",
-                status: "Applied",
-                dateApplied: new Date().toISOString(),
-                daysSince: 3,
-                company: { name: "Acme", recruiterEmail: "maria@acme.test", recruiterName: "Maria Recruiter" },
+                companyName: "Acme",
               },
               {
                 id: 77,
                 jobTitle: "Platform Engineer",
-                status: "Applied",
-                dateApplied: new Date().toISOString(),
-                daysSince: 1,
-                company: { name: "Beta" },
+                companyName: "Beta",
               },
             ],
-          },
         } as any);
       }
       if (url === "/jobapplications/42") {
@@ -377,7 +369,7 @@ describe("correspondence Gmail import", () => {
     renderDialog();
 
     fireEvent.click(await screen.findByRole("button", { name: /manage thread-1/i }));
-    fireEvent.mouseDown((await screen.findAllByRole("combobox")).slice(-1)[0]);
+    fireEvent.mouseDown(await screen.findByRole("combobox", { name: /move to job/i }));
     fireEvent.click(await screen.findByRole("option", { name: /beta • platform engineer/i }));
     fireEvent.click(screen.getByRole("button", { name: /move thread/i }));