i18n(memoro): translate views/DetailView via $_() — title sources, statuses, fields, transcript

- TITLE_SOURCE_LABELS map → TITLE_SOURCE_KEYS routing through $_(memoro.detail_view.title_sources.*)
- statusLabels map → STATUS_KEYS routing through $_(memoro.detail_view.statuses.*)
- Shell labels (notFound/confirmDelete/toast_deleted)
- Title placeholder: idle vs generating variant
- 4 prop rows (Status/Dauer/Sprache/Sichtbarkeit) + lang placeholder
- Section labels (Zusammenfassung/Transkript) + transcript states (transcribing/failed/empty/source)
- Meta-row Erstellt/Bearbeitet with {date}

Baselines: hardcoded 1025 → 1017 (8 cleared); missing-keys baseline unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/i18n-hardcoded-baseline.json

@@ -131,7 +131,6 @@
 	"apps/mana/apps/web/src/lib/modules/meditate/components/SessionPlayer.svelte": 3,
 	"apps/mana/apps/web/src/lib/modules/meditate/components/StatsOverview.svelte": 3,
 	"apps/mana/apps/web/src/lib/modules/meditate/ListView.svelte": 1,
-	"apps/mana/apps/web/src/lib/modules/memoro/views/DetailView.svelte": 8,
 	"apps/mana/apps/web/src/lib/modules/mood/components/QuickLog.svelte": 6,
 	"apps/mana/apps/web/src/lib/modules/mood/ListView.svelte": 6,
 	"apps/mana/apps/web/src/lib/modules/moodlit/components/mood/CreateMoodDialog.svelte": 3,