Add UptimeKuma, Searxng, Wallabag services

- Add uptime-kuma, searxng, and wallabag Docker services with Postgres integration for wallabag
- Add nginx reverse proxy location blocks for /uptime-kuma/, /searxng/, /wallabag/ in both prod and dev templates
- Update entrypoint.sh envsubst to include new HOST/PORT vars
- Add Vite dev proxy entries for all three services
- Update gitea-runner config: add self-hosted label and allow all volumes
- Add Gitea CI/CD workflow

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

nginx/nginx.conf.template

@@ -232,6 +232,45 @@ http {
             proxy_set_header X-Forwarded-Proto $scheme;
         }
 
+        location /uptime-kuma {
+            return 301 /uptime-kuma/;
+        }
+
+        location /uptime-kuma/ {
+            proxy_pass http://$UPTIMEKUMA_HOST:$UPTIMEKUMA_PORT/;
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+
+        location /searxng {
+            return 301 /searxng/;
+        }
+
+        location /searxng/ {
+            proxy_pass http://$SEARXNG_HOST:$SEARXNG_PORT/;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+
+        location /wallabag {
+            return 301 /wallabag/;
+        }
+
+        location /wallabag/ {
+            proxy_pass http://$WALLABAG_HOST:$WALLABAG_PORT/;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+
     }
 
 }