refactor: rename zitare -> quotes (Zitate)

Zitare was opaque Latin/Italian-flavored branding. Renamed to clear
English "quotes" (DE: Zitate) matching short-concrete-noun cluster.

- Module, routes, API, i18n, standalone landing app, plans dirs
- Dexie tables: quotesFavorites, quotesLists, quotesListTags,
  customQuotes (dropped redundant "quotes" prefix on the last)
- Logo QuotesLogo, theme quotes.css, search provider, dashboard
  widget QuoteWidget
- German user-facing label "Zitate" (English brand stays Quotes)

Pre-launch, no data migration needed.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/ci.yml

@@ -367,7 +367,7 @@ jobs:
             echo "skilltree-web=false" >> $GITHUB_OUTPUT
           fi
 
-          # zitare-backend: REMOVED — migrated to local-first
+          # quotes-backend: REMOVED — migrated to local-first
 
           # Check if any service needs building
           if grep -q "=true" $GITHUB_OUTPUT; then
@@ -410,7 +410,7 @@ jobs:
           echo "| food-web | ${{ steps.changes.outputs.food-web }} |" >> $GITHUB_STEP_SUMMARY
           echo "| skilltree-backend | removed |" >> $GITHUB_STEP_SUMMARY
           echo "| skilltree-web | ${{ steps.changes.outputs.skilltree-web }} |" >> $GITHUB_STEP_SUMMARY
-          echo "| zitare-backend | removed |" >> $GITHUB_STEP_SUMMARY
+          echo "| quotes-backend | removed |" >> $GITHUB_STEP_SUMMARY
 
   # ===========================================
   # Validation job - runs on PRs
@@ -1263,4 +1263,4 @@ jobs:
           cache-to: type=gha,mode=max
 
   # ===========================================
-  # Zitare Backend: REMOVED — migrated to local-first
+  # Quotes Backend: REMOVED — migrated to local-first

.github/workflows/docker-validate.yml

@@ -86,7 +86,7 @@ jobs:
   #   - mana-sync: covers Go service pattern
   #   - mana-media: covers Hono + Bun with Sharp/BullMQ
   #   - todo-web: covers most shared-* web packages
-  #   - zitare-web: covers content packages, shared-pwa
+  #   - quotes-web: covers content packages, shared-pwa
   #   - calendar-web: covers calendar shared packages
   #   - todo-backend: covers app backend pattern
   # ===========================================
@@ -114,8 +114,8 @@ jobs:
           - service: todo-web
             dockerfile: apps/todo/apps/web/Dockerfile
             context: .
-          - service: zitare-web
-            dockerfile: apps/zitare/apps/web/Dockerfile
+          - service: quotes-web
+            dockerfile: apps/quotes/apps/web/Dockerfile
             context: .
           - service: calendar-web
             dockerfile: apps/calendar/apps/web/Dockerfile