W28: Editor F9 Format menu (P1 audit gap)

The F9 audit found the editor had no Format menu at all. MC
has a dedicated Format menu with paragraph format, sort,
insert date/time, and external formatter entries.

Add a Format menu to the editor F9 menubar with 'Format paragraph'
(wired to the existing Editor::format_paragraph method, also
reachable via Alt-P). Sort, insert date/time, and external
formatter are documented as follow-ups.

- EditorCmd::FormatParagraph variant
- dispatch_editor_cmd handles it by calling format_paragraph()
- Format menu inserted between Edit and Search in the menubar

Updated 2 existing tests that counted menus (6→7) and checked
menu index (2→3 for Search after Format).

Tests: 1393 pass, zero warnings.

local/recipes/tui/tlc/source/src/editor/menubar.rs

@@ -79,6 +79,8 @@ pub enum EditorCmd {
     ToggleRelativeLines,
     /// Edit the user menu file (MC `CK_EditUserMenu`).
     EditUserMenu,
+    /// Alt-P — reformat the paragraph at the cursor.
+    FormatParagraph,
 }
 
 /// Outcome of a menu-bar key press.
@@ -201,6 +203,14 @@ impl EditorMenuBar {
                     MenuItem::item("Paste", 'v', EditorCmd::Paste),
                 ],
             ),
+            Menu::new(
+                "Format",
+                vec![MenuItem::item(
+                    "Format paragraph",
+                    'p',
+                    EditorCmd::FormatParagraph,
+                )],
+            ),
             Menu::new(
                 "Search",
                 vec![
@@ -583,9 +593,9 @@ mod tests {
     }
 
     #[test]
-    fn new_has_six_menus() {
+    fn new_has_seven_menus() {
         let m = mb();
-        assert_eq!(m.menu_count(), 6);
+        assert_eq!(m.menu_count(), 7);
         assert_eq!(
             m.active_items().len(),
             7 // File menu has 7 entries
@@ -677,13 +687,14 @@ mod tests {
     #[test]
     fn letter_hotkey_selects_menu_by_title() {
         let mut m = mb();
-        // 'S' should jump to Search menu (third).
+        // 'S' should jump to Search menu (fourth, after File/Edit/Format).
         let _ = m.handle_key(k('s'));
         // 's' might match 's' for Search (Se...) or s in 'Bookmark'...
         // First match wins. The first menu whose title starts with
         // the given char wins. Title 'File' starts with 'f' (no match).
-        // 'Edit' starts with 'e' (no). 'Search' starts with 's' (match).
-        assert_eq!(m.active_menu(), 2);
+        // 'Edit' starts with 'e' (no). 'Format' starts with 'f' (no).
+        // 'Search' starts with 's' (match).
+        assert_eq!(m.active_menu(), 3);
     }
 
     #[test]

local/recipes/tui/tlc/source/src/editor/mod.rs

@@ -1226,6 +1226,9 @@ impl Editor {
                     "Auto-indent: OFF".to_string()
                 });
             }
+            EditorCmd::FormatParagraph => {
+                self.format_paragraph();
+            }
             EditorCmd::ToggleShowWhitespace => {
                 let on = self.toggle_show_whitespace();
                 self.message = Some(if on {