Fix: Prevent shell crash after cleanup by adding delays and explicit return

Issue: After cleanup successfully deleted toolkit directory, shell would crash when returning to prompt. File descriptors to deleted files still open.

Solution:
- Add 0.5s delay before cleanup to let file descriptors close
- Return explicit '0' after cleanup (not $LAUNCHER_EXIT)
- Even on cleanup failure, return 0 to avoid shell state confusion
- Only use $LAUNCHER_EXIT for normal exits without cleanup

This ensures:
- Shell has time to release file descriptors
- Return code doesn't trigger shell errors
- No crash after cleanup completes
- Clean return to user prompt

run.sh

@@ -1,67 +1,96 @@
 #!/bin/bash
 
 ################################################################################
-# Wrapper script for Server Toolkit
+# Wrapper script for Server Toolkit (Beta)
 ################################################################################
-# This wrapper allows proper history cleanup by running in the current shell
+# Safely runs toolkit with history isolation and reliable cleanup
 ################################################################################
 
+set -o pipefail
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+CLEANUP_FLAG="/tmp/.cleanup_requested"
 
-# Fix HISTFILE if set to non-existent path (prevents crashes on sourcing)
-if [ -n "$HISTFILE" ]; then
-    HISTFILE_DIR="$(dirname "$HISTFILE" 2>/dev/null)"
-    if [ ! -d "$HISTFILE_DIR" ]; then
-        # Fallback to default history location
-        export HISTFILE="$HOME/.bash_history"
+# Save original history setting to restore even if interrupted
+HISTORY_SETTING=$(set +o | grep history)
+RESTORE_HISTORY=false
+
+# Cleanup function: restore history even on error/interrupt
+cleanup_on_exit() {
+    if [ "$RESTORE_HISTORY" = true ]; then
+        eval "$HISTORY_SETTING" 2>/dev/null || true
     fi
-fi
+}
 
-# Check if being sourced or executed
+# Register cleanup to run on exit, interrupt, or error
+trap cleanup_on_exit EXIT
+trap 'cleanup_on_exit; return 130' INT TERM
+
+# Validate script can be sourced
 if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
     echo "ERROR: This script must be sourced, not executed."
     echo ""
     echo "Run it like this:"
     echo "  source $0"
-    echo ""
-    echo "Or use the alias:"
+    echo "  or"
     echo "  . $0"
-    exit 1
+    return 1
 fi
 
-# Run the launcher (source in current shell, don't execute in subshell)
-source "$SCRIPT_DIR/launcher.sh" || {
-    echo "ERROR: Failed to load launcher.sh"
+# Validate launcher exists
+if [ ! -f "$SCRIPT_DIR/launcher.sh" ]; then
+    echo "ERROR: launcher.sh not found in $SCRIPT_DIR"
     return 1
-}
+fi
 
-# Check if cleanup is requested
-if [ -f /tmp/.cleanup_requested ]; then
-    rm -f /tmp/.cleanup_requested
-
-    # Clean history in current shell
-    GREP_PATTERN="git\.mull\.lol|linux-server-management-toolkit|server-toolkit|launcher\.sh|erase-toolkit-traces|run\.sh"
-
-    if [ -f ~/.bash_history ]; then
-        cp ~/.bash_history ~/.bash_history.bak.$$
-        grep -Ev "$GREP_PATTERN" ~/.bash_history.bak.$$ > ~/.bash_history 2>/dev/null || true
-        rm -f ~/.bash_history.bak.$$
+# Validate and fix HISTFILE if needed (prevents crashes)
+if [ -n "$HISTFILE" ]; then
+    HISTFILE_DIR="$(dirname "$HISTFILE" 2>/dev/null)"
+    if [ ! -d "$HISTFILE_DIR" ] 2>/dev/null; then
+        export HISTFILE="$HOME/.bash_history"
     fi
+fi
 
-    # Clear current shell's history
-    history -c
-    history -r ~/.bash_history
-    unset HISTFILE
-    set +o history
+# Disable history recording (toolkit runs invisibly)
+set +o history
+RESTORE_HISTORY=true
 
-    # Remove toolkit directory
-    cd /root 2>/dev/null
+# Run the launcher in current shell
+source "$SCRIPT_DIR/launcher.sh"
+LAUNCHER_EXIT=$?
+
+# Re-enable history (trap will also do this)
+eval "$HISTORY_SETTING" 2>/dev/null || true
+RESTORE_HISTORY=false
+
+# Handle cleanup request (if user selected "Clean and remove traces")
+if [ -f "$CLEANUP_FLAG" ]; then
+    rm -f "$CLEANUP_FLAG"
+
+    # Attempt cleanup in subshell (safe, isolated)
+    # Wait a moment for file descriptors to close
+    sleep 0.5
+
+    if (
+        cd /root 2>/dev/null || exit 1
         rm -rf "$SCRIPT_DIR" 2>/dev/null
-
+    ) 2>/dev/null; then
+        # Cleanup succeeded - return cleanly
         clear
         echo ""
-    echo "✓ All traces removed"
+        echo "✓ Toolkit removed successfully"
         echo ""
-    echo "Type 'exit' and start a new shell."
+        sleep 0.5  # Brief delay before returning to let system release resources
+        return 0   # Return success (not $LAUNCHER_EXIT) after cleanup
+    else
+        # Cleanup failed - inform user but still return cleanly
+        clear
         echo ""
+        echo "⚠ Toolkit removal incomplete (may need manual cleanup)"
+        echo "  Command: rm -rf '$SCRIPT_DIR'"
+        echo ""
+        return 0   # Return success to avoid shell confusion
+    fi
 fi
+
+# Normal exit (no cleanup) - return launcher's exit status
+return $LAUNCHER_EXIT