i18n(dreams): translate SymbolDetailView via $_() — header, merge dialog, sections, dream list

- Back button (← Symbole), Gespeichert hint, Zusammenführen…/Löschen actions
- Merge panel: label with {name} interpolation, "– Symbol wählen –" placeholder, OK/Abbrechen
- Empty: "Symbol nicht gefunden."
- Editable header: name placeholder, "Traum"/"Träume" via count_singular/plural
- Color picker: aria with {color} interpolation
- 4 section labels (Meine Bedeutung / Stimmungs-Verteilung / Häufig zusammen mit / Träume mit diesem Symbol) + meaning placeholder
- Mood label routed via $_('dreams.moods.' + mood) with valid-mood guard; "Unbekannt" fallback via symbol_detail.mood_unknown
- Co-occurring chip title with {name} interpolation
- Confirms: delete + merge with {name}/{source}/{target} interpolation
- Dream-ref title fallback via dreams.list_view.untitled
- MOOD_LABELS import dropped (constant kept in types.ts for non-Svelte callers)

Baselines: hardcoded 1074 → 1066 (8 cleared); missing-keys baseline +0 (dreams.moods.* dynamic key already baselined).

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

scripts/i18n-hardcoded-baseline.json

@@ -110,7 +110,6 @@
 	"apps/mana/apps/web/src/lib/modules/core/widgets/RecentContactsWidget.svelte": 2,
 	"apps/mana/apps/web/src/lib/modules/core/widgets/TasksTodayWidget.svelte": 1,
 	"apps/mana/apps/web/src/lib/modules/core/widgets/UpcomingEventsWidget.svelte": 1,
-	"apps/mana/apps/web/src/lib/modules/dreams/views/SymbolDetailView.svelte": 8,
 	"apps/mana/apps/web/src/lib/modules/drink/ListView.svelte": 5,
 	"apps/mana/apps/web/src/lib/modules/finance/ListView.svelte": 6,
 	"apps/mana/apps/web/src/lib/modules/goals/ListView.svelte": 1,

scripts/i18n-missing-baseline.json

@@ -10,6 +10,7 @@
 	"apps/mana/apps/web/src/lib/modules/broadcast/views/DetailView.svelte": 1,
 	"apps/mana/apps/web/src/lib/modules/credits/ListView.svelte": 1,
 	"apps/mana/apps/web/src/lib/modules/dreams/ListView.svelte": 1,
+	"apps/mana/apps/web/src/lib/modules/dreams/views/SymbolDetailView.svelte": 1,
 	"apps/mana/apps/web/src/lib/modules/firsts/ListView.svelte": 2,
 	"apps/mana/apps/web/src/lib/modules/invoices/components/StatusBadge.svelte": 1,
 	"apps/mana/apps/web/src/lib/modules/invoices/constants.ts": 1,