fix: unify TaxBaik deployment around CI

deploy/nginx-taxbaik-locations.conf

@@ -1,26 +1,15 @@
 # TaxBaik Nginx Location Blocks
 # Add these to your main Nginx config (e.g., /etc/nginx/sites-available/default)
 
-# TaxBaik 공개 사이트 (Razor Pages)
+# TaxBaik 공개 사이트 + 관리자 (통합 앱)
 location /taxbaik {
     proxy_pass         http://127.0.0.1:5001;
     proxy_http_version 1.1;
-    proxy_set_header   Connection keep-alive;
+    proxy_set_header   Upgrade $http_upgrade;
+    proxy_set_header   Connection $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;
     proxy_read_timeout 120s;
 }
-
-# TaxBaik 관리자 (Blazor Server - WebSocket 필요)
-location /taxbaik/admin {
-    proxy_pass         http://127.0.0.1:5002;
-    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;
-}

deploy/taxbaik-admin.service

@@ -1,26 +0,0 @@
-[Unit]
-Description=TaxBaik Admin Backoffice (.NET 8 Blazor Server)
-After=network.target
-
-[Service]
-Type=simple
-User=kjh2064
-WorkingDirectory=/home/kjh2064/taxbaik_admin_active
-ExecStart=/usr/bin/dotnet TaxBaik.Admin.dll
-Restart=always
-RestartSec=5
-
-# Graceful Shutdown (Hot Deploy용)
-TimeoutStopSec=35
-KillMode=mixed
-KillSignal=SIGTERM
-
-SyslogIdentifier=taxbaik-admin
-Environment=ASPNETCORE_ENVIRONMENT=Production
-Environment=ASPNETCORE_URLS=http://127.0.0.1:5002
-Environment=DOTNET_PRINT_TELEMETRY_MESSAGE=false
-# 아래 줄은 서버에서 직접 편집 (git에 커밋하지 않음)
-# Environment=ConnectionStrings__Default=Host=localhost;Database=taxbaikdb;Username=taxbaik;Password=CHANGE_ME
-
-[Install]
-WantedBy=multi-user.target