fix(coach): bind the delete journal to the account and record it was sent for

A tab outlives a logout, another login and a switch into a managed
profile. A delete re-sent in another scope met a 404 that read as
"already gone" and dropped the entry, or tripped the record fence and
toasted a failure for a row the person could not see. Entries now carry
their owner, only the current owner's are re-sent, and a session end
clears the journal with the rest of the session state.

src/hooks/__tests__/use-auth-session-clear.test.ts

@@ -29,6 +29,12 @@ vi.mock("@/lib/day/last-day", () => ({
   clearLastDay: () => clearLastDay(),
 }));
 
+// Coach deletes the ending session could not confirm belong to its account.
+const clearCoachDeleteJournal = vi.fn();
+vi.mock("@/lib/ai/coach/delete-journal", () => ({
+  clearCoachDeleteJournal: () => clearCoachDeleteJournal(),
+}));
+
 // `use-auth` pulls in the typed fetch wrapper, the router, and the i18n
 // context at module load. None of them matter for the pure session-end
 // helper, so stub them so the import is side-effect free in the test env.
@@ -48,6 +54,7 @@ import { clearCachesForSessionEnd } from "../use-auth";
 afterEach(() => {
   clearOfflineCachesForSessionEnd.mockClear();
   clearLastDay.mockClear();
+  clearCoachDeleteJournal.mockClear();
 });
 
 describe("clearCachesForSessionEnd — cross-user in-memory wipe", () => {
@@ -80,4 +87,9 @@ describe("clearCachesForSessionEnd — cross-user in-memory wipe", () => {
     clearCachesForSessionEnd(new QueryClient());
     expect(clearLastDay).toHaveBeenCalledTimes(1);
   });
+
+  it("clears the Coach delete journal", () => {
+    clearCachesForSessionEnd(new QueryClient());
+    expect(clearCoachDeleteJournal).toHaveBeenCalledTimes(1);
+  });
 });

src/hooks/use-auth.ts

@@ -28,6 +28,7 @@ import type { ModuleAccessState } from "@/lib/sharing/module-disclosure";
 import type { OnboardingStateDto } from "@/lib/onboarding/needs";
 import type { TourProgress } from "@/lib/onboarding/tour-progress";
 import { clearLastDay } from "@/lib/day/last-day";
+import { clearCoachDeleteJournal } from "@/lib/ai/coach/delete-journal";
 import { clearOfflineCachesForSessionEnd } from "@/lib/pwa/query-persister";
 import {
   setRecordScope,
@@ -624,6 +625,9 @@ export function clearCachesForSessionEnd(queryClient: QueryClient): void {
   clearWasAuthenticated();
   // The day the layer last showed is a date of this account's record.
   clearLastDay();
+  // Coach deletes this session could not confirm belong to its account; the
+  // next one must not re-send them against its own record.
+  clearCoachDeleteJournal();
   void clearOfflineCachesForSessionEnd();
 }