feat(quickshell): replace fuzzel with an in-process launcher

fuzzel could only answer "which app", so launching Brave at a URL meant
picking the app, waiting for it, then typing the address somewhere else.
The launcher now takes a verb and an object in one line: type
`gitlab.enqs.de` and every app that can open it sorts to the top, default
browser first, ready for Enter — or arrow/hjkl down to Brave's New
Incognito Window, which is offered as a peer of Brave itself rather than
hidden behind a submenu.

services/Apps.qml is the brain and holds no UI: it flattens desktop
entries and their actions into one index, classifies the typed argument
(url / mail / path), ranks by fuzzy match plus handler affinity plus
frecency, and launches. Launching through `uwsm app` keeps each app in its
own scope; entries whose Exec declares no field code (Brave's
`--incognito` action, among others) are launched by tokenising Exec per
the Desktop Entry spec and appending the argument, never via `sh -c`.

Four prefixes reuse the same window, so there is one picker and one set of
keys: `>` runs a command, `=` evaluates arithmetic, `:` is clipboard
history (cliphist, which had been a second fuzzel invocation), and a
dmenu mode is driven over IPC.

quickshell/scripts/takemi-dmenu is the bridge for that last one — a
`fuzzel --dmenu` drop-in for scripts that want a picker, symlinked into
~/.local/bin. fluxo's bt menu now goes through it.

Living in the Quickshell process means the window is on screen on the
frame the bind fires, with no process to spawn.

Removes fuzzel entirely: its config, its theme submodule, the package,
and the last consumers (the bar sigil, fluxo's menu_command). Also drops
hypr/scripts/powermenu.sh, which was fuzzel-based and bound to nothing.

hypr/lua/apps.lua

@@ -3,13 +3,21 @@
 return {
     terminal = "alacritty",
     fileManager = "nautilus",
-    menu = "fuzzel",
+    -- The launcher lives in the Quickshell process (quickshell/launcher/), so
+    -- the bind toggles it over IPC instead of spawning anything. Nothing to
+    -- start up means it is on screen on the same frame as the keypress.
+    menu = "qs ipc call shell launcher",
 
-    -- clipboard history picker
-    clipboard = "cliphist list | fuzzel --dmenu | cliphist decode | wl-copy",
+    -- Clipboard history. Opens the launcher already in its ":" mode, which
+    -- reads cliphist itself and copies the chosen entry back — so the picker is
+    -- the same window, with the same keys, as everything else.
+    clipboard = "qs ipc call shell prompt :",
 
-    -- pdf picker
-    pdfs = "pdfs-prompt --dmenu --menu 'fuzzel --dmenu --width 60'",
+    -- Proton Drive search. --fzf re-queries the daemon on every keystroke, so
+    -- results appear as you type; a dmenu could only filter a list it was
+    -- handed once, which made searching a two-step. It spawns its own terminal
+    -- (class pdfs-prompt, floated in lua/rules/windows.lua).
+    pdfs = "pdfs-prompt --fzf",
 
     -- bluetooth menu
     bluetooth = "fluxo bt menu",

hypr/lua/rules/layers.lua

@@ -1,10 +1,10 @@
 -- https://wiki.hypr.land/Configuring/Basics/Window-Rules/#layer-rules
 --
--- Quickshell surfaces (bar, popouts, OSD) and the fuzzel launcher. Note
+-- Quickshell surfaces: the bar, popouts, the OSD and the launcher. Note
 -- decoration.blur is off in lua/look.lua, so these only take effect if blur is
 -- switched back on.
 
-for _, namespace in ipairs({ "bottom", "top", "launcher" }) do
+for _, namespace in ipairs({ "bottom", "top", "takemi-launcher" }) do
     hl.layer_rule({
         match = { namespace = namespace },
         blur = true,