Add deploy preflight checks

scripts/deploy-include.txt

@@ -0,0 +1,8 @@
+index.html
+datenschutz.html
+impressum.html
+robots.txt
+sitemap.xml
+css
+img
+vendor

scripts/deploy-sftp.sh

@@ -4,6 +4,7 @@ set -euo pipefail
 
 repo_root="$(cd "$(dirname "$0")/.." && pwd)"
 config_file="$repo_root/.deploy.env"
+include_file="${DEPLOY_INCLUDE_FILE:-$repo_root/scripts/deploy-include.txt}"
 
 if [[ ! -f "$config_file" ]]; then
   echo "Fehlende Konfiguration: $config_file" >&2
@@ -16,6 +17,11 @@ if ! command -v sftp >/dev/null 2>&1; then
   exit 1
 fi
 
+if [[ ! -f "$include_file" ]]; then
+  echo "Fehlende Deploy-Liste: $include_file" >&2
+  exit 1
+fi
+
 set -a
 source "$config_file"
 set +a
@@ -26,24 +32,47 @@ set +a
 
 deploy_port="${DEPLOY_PORT:-22}"
 batch_file="$(mktemp)"
+deploy_items=()
 cleanup() {
   rm -f "$batch_file"
 }
 trap cleanup EXIT
 
+while IFS= read -r raw_item || [[ -n "$raw_item" ]]; do
+  item="${raw_item%%#*}"
+  item="${item%${item##*[![:space:]]}}"
+  item="${item#${item%%[![:space:]]*}}"
+
+  if [[ -z "$item" ]]; then
+    continue
+  fi
+
+  if [[ ! -e "$repo_root/$item" ]]; then
+    echo "Fehlender Deploy-Eintrag: $item" >&2
+    exit 1
+  fi
+
+  deploy_items+=("$item")
+done < "$include_file"
+
+if [[ ${#deploy_items[@]} -eq 0 ]]; then
+  echo "Keine Deploy-Eintraege in $include_file gefunden." >&2
+  exit 1
+fi
+
 cat > "$batch_file" <<EOF
 -mkdir $DEPLOY_TARGET_DIR
 cd $DEPLOY_TARGET_DIR
-put index.html
-put datenschutz.html
-put impressum.html
-put robots.txt
-put sitemap.xml
-put -r css
-put -r img
-put -r vendor
 EOF
 
+for item in "${deploy_items[@]}"; do
+  if [[ -d "$repo_root/$item" ]]; then
+    printf 'put -r %s\n' "$item" >> "$batch_file"
+  else
+    printf 'put %s\n' "$item" >> "$batch_file"
+  fi
+done
+
 cd "$repo_root"
 sftp -P "$deploy_port" "$DEPLOY_USER@$DEPLOY_HOST" < "$batch_file"