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>

docker/grafana/dashboards/master-overview.json

@@ -643,8 +643,8 @@
 						"type": "prometheus",
 						"uid": "${datasource}"
 					},
-					"expr": "up{job=\"zitare-backend\"}",
-					"legendFormat": "Zitare",
+					"expr": "up{job=\"quotes-backend\"}",
+					"legendFormat": "Quotes",
 					"refId": "O"
 				},
 				{

docker/grafana/dashboards/system-overview.json

@@ -603,8 +603,8 @@
 				},
 				{
 					"datasource": { "type": "prometheus", "uid": "${datasource}" },
-					"expr": "up{job=\"zitare-backend\"}",
-					"legendFormat": "Zitare",
+					"expr": "up{job=\"quotes-backend\"}",
+					"legendFormat": "Quotes",
 					"refId": "O"
 				},
 				{

docker/nginx/landings.conf

@@ -44,11 +44,11 @@ server {
     include /etc/nginx/snippets/landing-common.conf;
 }
 
-# zitares.mana.how — Zitare Landing
+# quotess.mana.how — Quotes Landing
 server {
     listen 80;
-    server_name zitares.mana.how;
-    root /srv/landings/zitare;
+    server_name quotess.mana.how;
+    root /srv/landings/quotes;
     index index.html;
     include /etc/nginx/snippets/landing-common.conf;
 }

docker/prometheus/prometheus.yml

@@ -229,7 +229,7 @@ scrape_configs:
           - https://mana.how/food
           - https://mana.how/plants
           - https://mana.how/calc
-          - https://mana.how/zitare
+          - https://mana.how/quotes
           - https://mana.how/cards
           - https://mana.how/skilltree
           - https://mana.how/music