fix: improve backup script error handling

- Check if directory is a git repository before proceeding
- Add fallback for git switch (use checkout if switch fails)
- Handle offline/no-origin scenarios gracefully
- Use local HEAD instead of origin/main for comparison
- Add error handling for push operations
- Continue backup locally if remote push fails

scripts/backup-main.sh

@@ -20,16 +20,26 @@ backup_repo() {
   
   cd "$repo_path"
   
+  # Check if this is a git repository
+  if ! git rev-parse --git-dir > /dev/null 2>&1; then
+    echo -e "${RED}❌ $repo_name: Not a git repository!${NC}"
+    cd ..
+    return 1
+  fi
+  
   # Ensure we're on main
-  CURRENT_BRANCH=$(git branch --show-current)
+  CURRENT_BRANCH=$(git branch --show-current 2>/dev/null || echo "")
   if [ "$CURRENT_BRANCH" != "main" ]; then
     echo "Switching to main branch..."
-    git switch main
+    git switch main 2>/dev/null || git checkout main
   fi
   
   # Pull latest changes
   echo "Pulling latest changes..."
-  git pull origin main
+  if ! git pull origin main 2>/dev/null; then
+    echo -e "${YELLOW}⚠️  Could not pull latest changes (might be offline or no origin/main)${NC}"
+    # Continue anyway with local state
+  fi
   
   # Check if working directory is clean
   if [ -n "$(git status --porcelain)" ]; then
@@ -43,10 +53,10 @@ backup_repo() {
   LATEST_BACKUP=$(git branch -r --sort=-committerdate 2>/dev/null | grep "origin/backup/main-" | head -1 | cut -d'/' -f2 || true)
   
   if [ -n "$LATEST_BACKUP" ]; then
-    MAIN_COMMIT=$(git rev-parse origin/main)
-    BACKUP_COMMIT=$(git rev-parse origin/$LATEST_BACKUP 2>/dev/null || true)
+    MAIN_COMMIT=$(git rev-parse HEAD 2>/dev/null || echo "")
+    BACKUP_COMMIT=$(git rev-parse origin/$LATEST_BACKUP 2>/dev/null || echo "")
     
-    if [ "$MAIN_COMMIT" = "$BACKUP_COMMIT" ]; then
+    if [ -n "$MAIN_COMMIT" ] && [ "$MAIN_COMMIT" = "$BACKUP_COMMIT" ]; then
       echo -e "${GREEN}✅ $repo_name: Already backed up in $LATEST_BACKUP${NC}"
       cd ..
       return 0
@@ -58,7 +68,14 @@ backup_repo() {
   
   echo "Creating backup branch: $BACKUP_BRANCH"
   git checkout -b $BACKUP_BRANCH
-  git push -u origin $BACKUP_BRANCH
+  
+  # Try to push, but continue even if it fails
+  if git push -u origin $BACKUP_BRANCH 2>/dev/null; then
+    echo -e "${GREEN}✅ Backup pushed to remote${NC}"
+  else
+    echo -e "${YELLOW}⚠️  Could not push backup to remote (backup exists locally only)${NC}"
+  fi
+  
   git checkout main
   
   echo -e "${GREEN}✅ $repo_name: Backup created successfully${NC}"