W67: HotListAdd Cmd variant (MC CK_HotListAdd)

Add Cmd::HotListAdd variant that opens the hotlist dialog with
a status hint to press Ins to add the current directory. This
provides the MC HotListAdd feature without changing the existing
Ctrl-X 'h' chord which already opens the hotlist dialog.

Tests: 1425 pass, zero warnings.

local/recipes/tui/tlc/source/src/filemanager/dispatch.rs

@@ -121,6 +121,11 @@ impl FileManager {
                 self.open_hotlist_dialog()?;
                 Ok(true)
             }
+            Cmd::HotListAdd => {
+                self.open_hotlist_dialog()?;
+                self.status.set_message("Hotlist — press Ins to add current directory");
+                Ok(true)
+            }
             Cmd::Tree => {
                 self.open_tree_dialog()?;
                 Ok(true)

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

@@ -44,6 +44,8 @@ pub enum Cmd {
     UserMenu,
     /// `Ctrl-\` — open the hotlist dialog.
     HotList,
+    /// Add the active panel's current directory to the hotlist.
+    HotListAdd,
     /// Ctrl-\\ — open the directory tree dialog.
     Tree,
     /// M-? — open the find-file dialog.
@@ -245,6 +247,7 @@ impl Cmd {
             Cmd::Help => "Help",
             Cmd::UserMenu => "User menu",
             Cmd::HotList => "Hotlist",
+            Cmd::HotListAdd => "Add to hotlist",
             Cmd::Tree => "Tree",
             Cmd::Find => "Find",
             Cmd::Cmdline => "Command line",