Show preset wish names in the current UI language

Preset wishes were created with `name: t(preset.labelKey)`, so the
translated string was persisted as the wish's name. A wish created while
the UI was Swedish stayed "Jul" in English forever -- the Swedish text
was the data, so no display-layer change could fix it.

Wish names are user-editable free text, so `name` cannot simply be
translated at render time. Migration 007 adds a nullable
`leave_wish.name_message_key` recording where a name came from: preset
wishes store the i18n key alongside the translated literal, and the UI
renders the key when present.

The key is cleared server-side the moment `name` actually changes,
compared against the stored value rather than trusting the caller, so no
client can forget to clear it and silently revert a user's own name to a
preset label.

An unknown key (a stale row, a renamed key) falls back to the stored
literal via an isTranslationKey guard, so a bad key can never crash the
page or leak a raw key to the user. Rows predating this column keep
displaying their stored name.

_FULL_SCHEMA in db/connection.py is updated in step with the migration.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RXMhc9nT6sNz1SL4j8dznL

frontend/src/services/api.test.ts

@@ -176,6 +176,7 @@ describe('API response mappers (snake_case → camelCase)', () => {
           workspace_id: 'ws1',
           child_id: 'child1',
           name: 'Sommar',
+          name_message_key: 'wishEditor.presetSommar',
           window_start_month: 6,
           window_start_day: 15,
           window_end_month: 7,
@@ -205,6 +206,7 @@ describe('API response mappers (snake_case → camelCase)', () => {
       expect(result[0]!.workspaceId).toBe('ws1')
       expect(result[0]!.childId).toBe('child1')
       expect(result[0]!.name).toBe('Sommar')
+      expect(result[0]!.nameMessageKey).toBe('wishEditor.presetSommar')
       expect(result[0]!.windowStartMonth).toBe(6)
       expect(result[0]!.windowEndDay).toBe(26)
       expect(result[0]!.targetWeeks).toBe(6)
@@ -301,6 +303,57 @@ describe('API response mappers (snake_case → camelCase)', () => {
       expect(result.windowStartMonth).toBe(6)
       expect(result.targetWeeks).toBe(6)
     })
+
+    it('sends name_message_key for a preset-created wish and maps it back', async () => {
+      const rawResponse = {
+        id: 'lw1',
+        workspace_id: 'ws1',
+        child_id: null,
+        name: 'Jul',
+        name_message_key: 'wishEditor.seasonJul',
+        window_start_month: 12,
+        window_start_day: 1,
+        window_end_month: 1,
+        window_end_day: 31,
+        target_weeks: 4,
+        recurrence: 'yearly',
+        first_year: 2026,
+        last_year: null,
+        priority: 1,
+        parent_mode: 'either',
+        parent_personal_data_uuid: null,
+        goal_override: null,
+        created_at: '2026-06-14T17:09:47',
+        updated_at: '2026-06-14T17:09:47',
+      }
+
+      fetchMock.mockResolvedValue({
+        ok: true,
+        status: 200,
+        json: async () => rawResponse,
+      })
+
+      const result = await api.createLeaveWish({
+        workspaceId: 'ws1',
+        name: 'Jul',
+        nameMessageKey: 'wishEditor.seasonJul',
+        windowStartMonth: 12,
+        windowStartDay: 1,
+        windowEndMonth: 1,
+        windowEndDay: 31,
+        targetWeeks: 4,
+        recurrence: 'yearly',
+        firstYear: 2026,
+      })
+
+      const calls = (fetchMock.mock?.calls ?? []) as any[][]
+      if (calls.length === 0) throw new Error('No fetch calls made')
+      const [, options] = calls[0]!
+      const body = JSON.parse(options.body)
+
+      expect(body.name_message_key).toBe('wishEditor.seasonJul')
+      expect(result.nameMessageKey).toBe('wishEditor.seasonJul')
+    })
   })
 
   describe('getWorkspace', () => {
@@ -829,6 +882,46 @@ describe('endpoint functions (representative coverage)', () => {
     expect(result.targetWeeks).toBe(8)
   })
 
+  it('updateLeaveWish sends name_message_key: null to explicitly clear it on rename', async () => {
+    // Mirrors what WishEditor sends the moment a user edits a preset wish's
+    // name — the request must carry an explicit `null`, not omit the field
+    // (omitting it would mean "leave unchanged" server-side).
+    fetchMock.mockResolvedValue({
+      ok: true,
+      status: 200,
+      json: async () => ({
+        id: 'lw1',
+        workspace_id: 'ws1',
+        child_id: null,
+        name: 'Vinterresa',
+        name_message_key: null,
+        window_start_month: 6,
+        window_start_day: 15,
+        window_end_month: 7,
+        window_end_day: 26,
+        target_weeks: 6,
+        recurrence: 'yearly',
+        first_year: 2026,
+        last_year: null,
+        priority: 1,
+        parent_mode: 'either',
+        parent_personal_data_uuid: null,
+        goal_override: null,
+        created_at: '2026-01-01',
+        updated_at: '2026-01-01',
+      }),
+    })
+
+    const result = await api.updateLeaveWish('lw1', {
+      name: 'Vinterresa',
+      nameMessageKey: null,
+    })
+
+    expect(lastRequestBody()).toEqual({ name: 'Vinterresa', name_message_key: null })
+    expect(result.name).toBe('Vinterresa')
+    expect(result.nameMessageKey).toBeNull()
+  })
+
   it('updateLeaveWish sends every provided field, snake_cased', async () => {
     fetchMock.mockResolvedValue({
       ok: true,