Fix CI/CD root user error in deployment scripts

- Modify root checks to allow running as root in CI environments
- Add conditional check: only prevent root when not in CI (CI env var not set)
- Updated scripts:
  - scripts/gitea-deploy.sh
  - scripts/gitea-deploy-simple.sh
  - scripts/deploy.sh
  - scripts/auto-deploy.sh
  - scripts/setup-gitea-runner.sh

This fixes the 'This script should not be run as root' error in Gitea Actions
where containers run as root by default.

scripts/auto-deploy.sh

@@ -37,9 +37,9 @@ warning() {
     echo -e "${YELLOW}[WARNING]${NC} $1" | tee -a "$LOG_FILE"
 }
 
-# Check if running as root
-if [[ $EUID -eq 0 ]]; then
-   error "This script should not be run as root"
+# Check if running as root (skip in CI environments)
+if [[ $EUID -eq 0 ]] && [[ -z "$CI" ]]; then
+   error "This script should not be run as root (use CI=true to override)"
    exit 1
 fi