revert(menu): keep the hand-rolled fd files module, drop rofi-file-browser

The rofi-file-browser-extended navigate-a-tree model felt worse than flat
fuzzy-find for a quick launcher (yazi already covers real browsing), so
`files` goes back to `fd` → `rofi -dmenu` → xdg-open. calc (rofi-calc)
and emoji (rofi-emoji) stay. Re-adds `fd` to the module's packages and
notes the dropped plugin in the roadmap.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

README.md

@@ -295,9 +295,9 @@ close · `SUPER+1..9` workspaces · `Print` region screenshot.
     `nomarchy-menu` dispatcher: root picker (no args) · `power`
     (lock/logout/suspend/hibernate/reboot/shutdown, SUPER+X) ·
     `theme` (SUPER+T) · `clipboard` (cliphist, SUPER+CTRL+V) · `calc`
-    (rofi-calc, live, SUPER+CTRL+C) · `files` (rofi-file-browser, live
-    navigation, SUPER+CTRL+F) · `emoji` (rofi-emoji, SUPER+CTRL+E) ·
-    `web` (Google). SUPER+D is `rofi -show drun`.
+    (rofi-calc, live, SUPER+CTRL+C) · `files` (fd → xdg-open,
+    SUPER+CTRL+F) · `emoji` (rofi-emoji, SUPER+CTRL+E) · `web` (Google).
+    SUPER+D is `rofi -show drun`.
   - ✓ shipped modules: `network` (nmtui in `$TERMINAL`) · `bluetooth`
     (blueman-manager) · `capture` (grim/slurp submenu: region/full →
     clipboard/file, saved to `~/Pictures/Screenshots`) · `keybinds` (the
@@ -326,11 +326,12 @@ close · `SUPER+1..9` workspaces · `Print` region screenshot.
   - **calc** → **rofi-calc**: live results as you type via libqalculate
     directly (dodging the qalc-CLI "of" bug), Enter copies, menu persists
     to chain calculations.
-  - **files** → **rofi-file-browser-extended**: live directory navigation
-    (Backspace to ascend, toggle hidden) opening with xdg-open, replacing
-    the flat `fd` dump of `$HOME`. yazi (SUPER+E) stays the power browser.
   - **emoji** → **rofi-emoji** (new module, SUPER+CTRL+E): glyph picker,
     copies via the plugin's Wayland clipboard adapter.
+  - **files** stays the hand-rolled `fd` → `rofi -dmenu` → xdg-open fuzzy
+    search: rofi-file-browser-extended was tried and dropped — its
+    navigate-a-tree model felt worse than flat fuzzy-find for a quick
+    launcher, and yazi (SUPER+E) already covers real browsing.
 - **More menu modules from rofi tools:** the script-based counterparts
   (run via `rofi -dmenu`, like the hand-rolled modules), each a deliberate
   replacement of an existing flow: **rofi-network-manager** (a keyboard