fix(core): exclude trashed docs from journal lookups (#15461)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **Bug Fixes**
* Trashed journals are now excluded from journal date lists and
date-based searches.
* Journal dates automatically reappear when a journal is restored from
the trash.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/modules/journal/__tests__/journal-store.spec.ts

@@ -0,0 +1,79 @@
+import { Framework, LiveData } from '@toeverything/infra';
+import { describe, expect, test } from 'vitest';
+
+import type { DocsService } from '../../doc';
+import { JournalStore } from '../store/journal';
+
+function createDoc(id: string, journal: string, trash = false) {
+  return {
+    id,
+    properties$: new LiveData({ journal }),
+    trash$: new LiveData(trash),
+  };
+}
+
+function createStore(docs: ReturnType<typeof createDoc>[]) {
+  const docsService = {
+    list: {
+      docs$: new LiveData(docs),
+    },
+  } as unknown as DocsService;
+
+  const framework = new Framework();
+  framework.store(JournalStore, () => new JournalStore(docsService));
+  return framework.provider().get(JournalStore);
+}
+
+describe('JournalStore', () => {
+  const date = '2026-08-10';
+
+  test('docsByJournalDate$ skips trashed journals', () => {
+    const store = createStore([
+      createDoc('trashed', date, true),
+      createDoc('kept', date),
+    ]);
+
+    expect(store.docsByJournalDate$(date).value.map(doc => doc.id)).toEqual([
+      'kept',
+    ]);
+  });
+
+  test('docsByJournalDate$ is empty when the only journal is trashed', () => {
+    const store = createStore([createDoc('trashed', date, true)]);
+
+    expect(store.docsByJournalDate$(date).value).toEqual([]);
+  });
+
+  test('getDocsByJournalDate skips trashed journals', () => {
+    const store = createStore([
+      createDoc('trashed', date, true),
+      createDoc('kept', date),
+    ]);
+
+    expect(store.getDocsByJournalDate(date).map(doc => doc.id)).toEqual([
+      'kept',
+    ]);
+  });
+
+  test('allJournalDates$ skips trashed journals', () => {
+    const store = createStore([
+      createDoc('trashed', date, true),
+      createDoc('kept', '2026-08-09'),
+    ]);
+
+    expect(store.allJournalDates$.value).toEqual(new Set(['2026-08-09']));
+  });
+
+  test('restoring a journal claims its date again', () => {
+    const doc = createDoc('journal', date, true);
+    const store = createStore([doc]);
+
+    expect(store.docsByJournalDate$(date).value).toEqual([]);
+
+    doc.trash$.next(false);
+
+    expect(store.docsByJournalDate$(date).value.map(d => d.id)).toEqual([
+      'journal',
+    ]);
+  });
+});

packages/frontend/core/src/modules/journal/store/journal.ts

@@ -16,6 +16,9 @@ export class JournalStore extends Store {
     return new Set(
       get(this.docsService.list.docs$)
         .filter(doc => {
+          if (get(doc.trash$)) {
+            return false;
+          }
           const journal = get(doc.properties$.selector(p => p.journal));
           return !!journal && isJournalString(journal);
         })
@@ -53,12 +56,15 @@ export class JournalStore extends Store {
 
   getDocsByJournalDate(date: string) {
     return this.docsService.list.docs$.value.filter(
-      doc => doc.properties$.value.journal === date
+      doc => !doc.trash$.value && doc.properties$.value.journal === date
     );
   }
   docsByJournalDate$(date: string) {
     return LiveData.computed(get => {
       return get(this.docsService.list.docs$).filter(doc => {
+        if (get(doc.trash$)) {
+          return false;
+        }
         const journal = get(doc.properties$.selector(p => p.journal));
         return journal === date;
       });