Update systemd service to use go run with single log file

- Use 'go run .' instead of compiled binary
- Single unified log file at /var/log/cv.log
- Simpler configuration matching project philosophy

config/systemd/cv.service

@@ -8,27 +8,13 @@ Type=simple
 User=txeo
 Group=txeo
 WorkingDirectory=/home/txeo/Git/yo/cv
-ExecStart=/home/txeo/Git/yo/cv/cv-server
+ExecStart=/usr/bin/go run .
 
 # Environment variables
 Environment="GO_ENV=production"
 Environment="PORT=1999"
-Environment="HOST=0.0.0.0"
 Environment="BASE_URL=https://juan.andres.morenorub.io"
-Environment="TEMPLATE_HOT_RELOAD=false"
+Environment="VERSION=1.0.0"
-EnvironmentFile=-/home/txeo/Git/yo/cv/.env
-
-# Security hardening
-NoNewPrivileges=true
-PrivateTmp=true
-ProtectSystem=strict
-ProtectHome=false
-ReadWritePaths=/home/txeo/Git/yo/cv/data
-ReadOnlyPaths=/home/txeo/Git/yo/cv
-
-# Resource limits
-LimitNOFILE=65536
-MemoryMax=512M
 
 # Restart policy
 Restart=always
@@ -37,8 +23,8 @@ StartLimitInterval=60
 StartLimitBurst=3
 
 # Logging
-StandardOutput=journal
+StandardOutput=append:/var/log/cv.log
-StandardError=journal
+StandardError=append:/var/log/cv.log
 SyslogIdentifier=cv
 
 [Install]