Fix Acronis installer execution permissions issue

Changes:
- Added verification after chmod +x to ensure permissions were set
- Changed execution from './file' to 'bash ./file' for better compatibility
- Added detailed error handling if chmod fails
- Shows file permissions on error for debugging

This fixes 'Permission denied' error (exit code 126) when running installer.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

modules/backup/acronis-install.sh

@@ -254,7 +254,23 @@ fi
 echo ""
 
 # Make executable
-chmod +x "Cyber_Protection_Agent_for_Linux_x86_64.bin"
+if ! chmod +x "Cyber_Protection_Agent_for_Linux_x86_64.bin"; then
+    print_error "Failed to set executable permissions"
+    cd /
+    rm -rf "$TEMP_DIR"
+    press_enter
+    exit 1
+fi
+
+# Verify file is executable
+if [ ! -x "Cyber_Protection_Agent_for_Linux_x86_64.bin" ]; then
+    print_error "Installer file is not executable"
+    ls -lh "Cyber_Protection_Agent_for_Linux_x86_64.bin"
+    cd /
+    rm -rf "$TEMP_DIR"
+    press_enter
+    exit 1
+fi
 
 # Run installer
 echo "→ Running Acronis installer..."
@@ -263,10 +279,10 @@ echo -e "${DIM}─────────────────────
 
 if [ -z "$INSTALL_FLAGS" ]; then
     # Interactive mode - run directly
-    ./Cyber_Protection_Agent_for_Linux_x86_64.bin
+    bash ./Cyber_Protection_Agent_for_Linux_x86_64.bin
 else
     # Unattended mode
-    ./Cyber_Protection_Agent_for_Linux_x86_64.bin $INSTALL_FLAGS
+    bash ./Cyber_Protection_Agent_for_Linux_x86_64.bin $INSTALL_FLAGS
 fi
 
 INSTALL_EXIT_CODE=$?