Improve deploy.sh: show commit details, warn if unpushed

- Display current branch, local/remote main commit with message
- Warn if local main is ahead of Gitea remote
- Show last 5 commits on main before deploying
- Update server address to deployment@217.154.84.225

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

deploy.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-# deploy.sh — Deploy main branch to production (vhtv-stiftung.de)
+# deploy.sh — Deploy main branch to production (217.154.84.225)
 #
 # Usage:
 #   ./deploy.sh              # Deploy current main to production
@@ -12,7 +12,7 @@
 
 set -euo pipefail
 
-SERVER="${DEPLOY_SERVER:-remmer@vhtv-stiftung.de}"
+SERVER="${DEPLOY_SERVER:-deployment@217.154.84.225}"
 PROD_DIR="${DEPLOY_DIR:-/opt/stiftung}"
 COMPOSE_FILE="compose.yml"
 DRY_RUN=false
@@ -28,9 +28,54 @@ echo "Path:    $PROD_DIR"
 echo "Compose: $COMPOSE_FILE"
 echo ""
 
-# Verify local main is up to date with remote
-LOCAL_MAIN=$(git rev-parse main 2>/dev/null || echo "unknown")
-echo "Local main: $LOCAL_MAIN"
+# --- Pre-deploy checks ---
+CURRENT_BRANCH=$(git branch --show-current 2>/dev/null || echo "unknown")
+echo "Aktueller Branch: $CURRENT_BRANCH"
+
+# Check if main branch exists
+if ! git rev-parse --verify main &>/dev/null; then
+    echo ""
+    echo "FEHLER: Branch 'main' existiert nicht lokal."
+    echo "Bist du im richtigen Repository?"
+    exit 1
+fi
+
+LOCAL_MAIN=$(git rev-parse --short main 2>/dev/null)
+LOCAL_MAIN_FULL=$(git rev-parse main 2>/dev/null)
+echo "Local main:  $LOCAL_MAIN ($(git log -1 --format='%s' main 2>/dev/null))"
+
+# Check if main is pushed to Gitea
+git fetch origin --quiet 2>/dev/null || true
+REMOTE_MAIN=$(git rev-parse --short origin/main 2>/dev/null || echo "unknown")
+echo "Remote main: $REMOTE_MAIN (origin = Gitea)"
+
+if [[ "$REMOTE_MAIN" != "unknown" && "$LOCAL_MAIN" != "$REMOTE_MAIN" ]]; then
+    UNPUSHED=$(git log --oneline origin/main..main 2>/dev/null | wc -l | tr -d ' ')
+    echo ""
+    echo "WARNUNG: Local main ist $UNPUSHED Commit(s) vor origin/main!"
+    echo "Du musst erst 'git push origin main' ausführen, sonst deployed der Server den alten Stand."
+    if [[ "$DRY_RUN" != true ]]; then
+        echo ""
+        read -p "Trotzdem fortfahren? [y/N] " -n 1 -r
+        echo ""
+        [[ $REPLY =~ ^[Yy]$ ]] || exit 0
+    fi
+elif [[ "$REMOTE_MAIN" == "unknown" ]]; then
+    echo ""
+    echo "WARNUNG: Konnte Gitea-Remote nicht erreichen. Status unbekannt."
+fi
+
+# Show what the server will get
+echo ""
+echo "Der Server wird diesen Stand deployen:"
+echo "  Commit: $LOCAL_MAIN"
+echo "  $(git log -1 --format='%ai — %s' main 2>/dev/null)"
+RECENT_COMMITS=$(git log --oneline -5 main 2>/dev/null)
+if [[ -n "$RECENT_COMMITS" ]]; then
+    echo ""
+    echo "Letzte 5 Commits auf main:"
+    echo "$RECENT_COMMITS" | sed 's/^/  /'
+fi
 
 if [[ "$DRY_RUN" == true ]]; then
     echo ""
@@ -45,10 +90,10 @@ if [[ "$DRY_RUN" == true ]]; then
 fi
 
 echo ""
-read -p "Deploy main ($LOCAL_MAIN) to production? [y/N] " -n 1 -r
+read -p "Deploy main ($LOCAL_MAIN) auf Produktion? [y/N] " -n 1 -r
 echo ""
 if [[ ! $REPLY =~ ^[Yy]$ ]]; then
-    echo "Aborted."
+    echo "Abgebrochen."
     exit 0
 fi