Handle failed LXC install and cleanup in build.func

Moved failed LXC installation cleanup logic from error_handler.func to build.func. Now, if installation fails, the user is prompted to remove the broken container with a 60s timeout, and the installation log is copied for debugging. Removed the cleanup_failed_lxc function and related trap from error_handler.func for better encapsulation.

misc/build.func

@@ -2578,12 +2578,39 @@ EOF'
 
   # Run application installer
   if ! lxc-attach -n "$CTID" -- bash -c "$(curl -fsSL https://raw.githubusercontent.com/community-scripts/ProxmoxVED/main/install/${var_install}.sh)"; then
-    local exit_code=$?
-    # Try to copy installation log from container before exiting
+    local install_exit_code=$?
+    msg_error "Installation failed in container ${CTID} (exit code: ${install_exit_code})"
+
+    # Try to copy installation log from container before cleanup prompt
     if [[ -n "$CTID" && -n "${SESSION_ID:-}" ]]; then
       pct pull "$CTID" "/root/.install-${SESSION_ID}.log" "/tmp/install-${SESSION_ID}.log" 2>/dev/null || true
+      msg_info "Installation log copied to /tmp/install-${SESSION_ID}.log"
     fi
-    exit $exit_code
+
+    # Prompt user for cleanup with 60s timeout
+    local response
+    echo -en "${YW}Remove broken container ${CTID}? (Y/n) [auto-remove in 60s]: ${CL}"
+
+    if read -t 60 -r response; then
+      if [[ -z "$response" || "$response" =~ ^[Yy]$ ]]; then
+        # Remove container
+        msg_info "Removing container ${CTID}"
+        pct stop "$CTID" &>/dev/null || true
+        pct destroy "$CTID" &>/dev/null || true
+        msg_ok "Container ${CTID} removed"
+      elif [[ "$response" =~ ^[Nn]$ ]]; then
+        msg_info "Container ${CTID} kept for debugging"
+      fi
+    else
+      # Timeout - auto-remove
+      echo -e "\n${YW}No response - auto-removing container${CL}"
+      msg_info "Removing container ${CTID}"
+      pct stop "$CTID" &>/dev/null || true
+      pct destroy "$CTID" &>/dev/null || true
+      msg_ok "Container ${CTID} removed"
+    fi
+
+    exit $install_exit_code
   fi
 }
 

misc/error_handler.func

@@ -224,81 +224,7 @@ error_handler() {
 }
 
 # ==============================================================================
-# SECTION 3: CLEANUP HANDLERS
-# ==============================================================================
-
-# ------------------------------------------------------------------------------
-# cleanup_failed_lxc()
-#
-# - Cleanup handler for failed LXC installations
-# - Only prompts during install phase (when CTID is set)
-# - Asks user if they want to remove the broken container
-# - 60 second timeout - auto-removes if no response
-# - Stops and destroys container on timeout or confirmation
-# - Silent if CTID not set or container doesn't exist
-# ------------------------------------------------------------------------------
-cleanup_failed_lxc() {
-  local exit_code=$?
-
-  # Only cleanup on error and during install (CTID must be set)
-  if [[ $exit_code -eq 0 || -z "${CTID:-}" ]]; then
-    return 0
-  fi
-
-  # Check if container exists
-  if ! pct status "$CTID" &>/dev/null; then
-    return 0
-  fi
-
-  # Prompt user for cleanup
-  if declare -f msg_warn >/dev/null 2>&1; then
-    msg_warn "Installation failed for container ${CTID}"
-  else
-    echo -e "\n${YW}[WARN]${CL} Installation failed for container ${CTID}"
-  fi
-
-  # Ask for confirmation with 60s timeout
-  local response
-  echo -en "${YW}Remove broken container ${CTID}? (Y/n) [auto-remove in 60s]: ${CL}"
-
-  if read -t 60 -r response; then
-    # User provided input within timeout
-    if [[ -z "$response" || "$response" =~ ^[Yy]$ ]]; then
-      # Empty (Enter) or Y/y = remove
-      :
-    elif [[ "$response" =~ ^[Nn]$ ]]; then
-      # N/n = keep for debugging
-      if declare -f msg_info >/dev/null 2>&1; then
-        msg_info "Container ${CTID} kept for debugging"
-      else
-        echo -e "${YW}Container ${CTID} kept for debugging${CL}"
-      fi
-      return 0
-    fi
-  else
-    # Timeout reached - auto-remove
-    echo -e "\n${YW}No response - auto-removing container${CL}"
-  fi
-
-  # Cleanup confirmed or timeout
-  if declare -f msg_info >/dev/null 2>&1; then
-    msg_info "Removing container ${CTID}"
-  else
-    echo -e "${YW}Removing container ${CTID}...${CL}"
-  fi
-
-  pct stop "$CTID" &>/dev/null || true
-  pct destroy "$CTID" &>/dev/null || true
-
-  if declare -f msg_ok >/dev/null 2>&1; then
-    msg_ok "Container ${CTID} removed"
-  else
-    echo -e "${GN}Container ${CTID} removed${CL}"
-  fi
-}
-
-# ==============================================================================
-# SECTION 4: SIGNAL HANDLERS
+# SECTION 3: SIGNAL HANDLERS
 # ==============================================================================
 
 # ------------------------------------------------------------------------------
@@ -349,7 +275,7 @@ on_terminate() {
 }
 
 # ==============================================================================
-# SECTION 5: INITIALIZATION
+# SECTION 4: INITIALIZATION
 # ==============================================================================
 
 # ------------------------------------------------------------------------------
@@ -362,7 +288,7 @@ on_terminate() {
 #   * set -u: (optional) Exit on undefined variable (if STRICT_UNSET=1)
 # - Sets up traps:
 #   * ERR → error_handler
-#   * EXIT → on_exit (+ cleanup_failed_lxc if in install context)
+#   * EXIT → on_exit
 #   * INT → on_interrupt
 #   * TERM → on_terminate
 # - Call this function early in every script
@@ -372,8 +298,9 @@ catch_errors() {
   if [ "${STRICT_UNSET:-0}" = "1" ]; then
     set -u
   fi
+  
   trap 'error_handler' ERR
-  trap 'cleanup_failed_lxc; on_exit' EXIT
+  trap on_exit EXIT
   trap on_interrupt INT
   trap on_terminate TERM
-}
+}