Kit Manager: add Export as XLS button

Saves the kit table to an Excel file with section headers, check
marks, and all four data columns. Default filename is based on the
open SAX file.

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

manage_kits.py

@@ -15,8 +15,9 @@ declared can be unticked, which turns its Action into REMOVE. An installed kit t
 declared starts unticked, and ticking it adds it at its newest build.
 """
 
+import os
 import tkinter as tk
-from tkinter import messagebox, ttk
+from tkinter import filedialog, messagebox, ttk
 
 import app_state
 import palette
@@ -267,6 +268,9 @@ class KitsPanel:
             button_row, text="Update kits", command=self._update_marked,
         ).pack(side=tk.LEFT, padx=6)
         ttk.Button(button_row, text="Close", command=self.close).pack(side=tk.RIGHT)
+        ttk.Button(
+            button_row, text="Export as XLS", command=self._export_xls,
+        ).pack(side=tk.RIGHT, padx=6)
 
         self.rows = []
         self.row_by_item = {}
@@ -286,6 +290,70 @@ class KitsPanel:
         self._close_editor()
         self.frame.destroy()
 
+    def _export_xls(self):
+        try:
+            from openpyxl import Workbook
+            from openpyxl.styles import Font, PatternFill, Alignment
+        except ImportError:
+            messagebox.showerror("Export", "openpyxl is not installed.")
+            return
+
+        default_name = ""
+        if app_state.current_file_path:
+            base = os.path.splitext(os.path.basename(app_state.current_file_path))[0]
+            default_name = f"{base}_kits.xlsx"
+
+        path = filedialog.asksaveasfilename(
+            title="Export Kit Table",
+            defaultextension=".xlsx",
+            initialfile=default_name,
+            filetypes=[("Excel Files", "*.xlsx")],
+        )
+        if not path:
+            return
+
+        wb = Workbook()
+        ws = wb.active
+        ws.title = "Kits"
+
+        headers = ["", "Kit name", "Installed", "Latest", "Action"]
+        header_font = Font(bold=True)
+        section_fill = PatternFill(start_color="DCDCDC", end_color="DCDCDC", fill_type="solid")
+
+        for col, header in enumerate(headers, 1):
+            cell = ws.cell(row=1, column=col, value=header)
+            cell.font = header_font
+
+        row_num = 2
+        for row in self.rows:
+            if "section" in row:
+                cell = ws.cell(row=row_num, column=2, value=row["section"])
+                cell.font = Font(bold=True)
+                for col in range(1, 6):
+                    ws.cell(row=row_num, column=col).fill = section_fill
+                row_num += 1
+                continue
+
+            check = "✓" if row["checked"] else ""
+            ws.cell(row=row_num, column=1, value=check).alignment = Alignment(horizontal="center")
+            ws.cell(row=row_num, column=2, value=row["kit"])
+            ws.cell(row=row_num, column=3, value=row["installed_text"])
+            ws.cell(row=row_num, column=4, value=row["latest_text"])
+            ws.cell(row=row_num, column=5, value=self._action_text(row))
+            row_num += 1
+
+        ws.column_dimensions["A"].width = 4
+        ws.column_dimensions["B"].width = 28
+        ws.column_dimensions["C"].width = 16
+        ws.column_dimensions["D"].width = 16
+        ws.column_dimensions["E"].width = 30
+
+        try:
+            wb.save(path)
+            app_state.set_status(f"Kit table exported to {os.path.basename(path)}")
+        except Exception as e:
+            messagebox.showerror("Export", f"Could not save file:\n{e}")
+
     def _close_editor(self):
         if self._editor_widget is not None:
             self._editor_widget.destroy()