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.

quickshell/launcher/ResultRow.qml

@@ -0,0 +1,132 @@
+import QtQuick
+import Quickshell
+import Quickshell.Widgets
+import "root:/config"
+import "root:/components"
+
+// One line in the result list. Rest is bare — no fill, no border — so a list of
+// forty apps reads as a column of text rather than forty boxes. Only the
+// selected row gets a slab, and it takes the full inverted treatment: white
+// fill, black text. That is the strongest contrast the palette has, which is
+// what the row you are about to launch should be wearing.
+Item {
+    id: root
+
+    required property var entry
+    required property bool selected
+    property bool hovered: false
+    property string badge: ""
+
+    signal activated
+    signal pinRequested
+
+    implicitHeight: 46
+
+    // Selection slab. Leans like everything else; drawn as a Skew so the
+    // diagonals get analytic antialiasing instead of a pixel staircase.
+    Skew {
+        anchors.fill: parent
+        anchors.leftMargin: -Theme.padS
+        anchors.rightMargin: -Theme.padS
+        color: root.selected ? Theme.treatmentSelectedFill : "transparent"
+        opacity: root.selected ? 1 : 0
+
+        Behavior on opacity {
+            NumberAnimation { duration: Theme.durFast; easing.type: Easing.OutQuad }
+        }
+    }
+
+    // Hover is a crimson tick in the gutter rather than a second slab, so
+    // pointing at a row cannot be mistaken for selecting it.
+    Skew {
+        anchors.verticalCenter: parent.verticalCenter
+        x: -Theme.padS
+        width: 3
+        height: root.hovered && !root.selected ? parent.height - 10 : 0
+        color: Theme.accent
+
+        Behavior on height {
+            NumberAnimation { duration: Theme.durFast; easing.type: Easing.OutBack }
+        }
+    }
+
+    Row {
+        anchors.fill: parent
+        anchors.leftMargin: Theme.padM
+        anchors.rightMargin: Theme.padM
+        spacing: Theme.padM
+
+        IconImage {
+            anchors.verticalCenter: parent.verticalCenter
+            implicitSize: 26
+            asynchronous: true
+            source: root.entry.icon ? Quickshell.iconPath(root.entry.icon, true) : ""
+            visible: source !== ""
+        }
+
+        // Entries with no icon still need to occupy the same gutter, or their
+        // labels wander left and the column stops being a column.
+        Icon {
+            anchors.verticalCenter: parent.verticalCenter
+            width: 26
+            text: "󰣆"
+            color: root.selected ? Theme.treatmentSelectedText : Theme.muted
+            visible: !root.entry.icon && root.entry.kind !== "dmenu"
+        }
+
+        Column {
+            anchors.verticalCenter: parent.verticalCenter
+            width: parent.width - 26 - Theme.padM * 2 - trailing.width
+            spacing: -1
+
+            Text {
+                width: parent.width
+                text: root.entry.name
+                elide: Text.ElideRight
+                color: root.selected ? Theme.treatmentSelectedText : Theme.text
+                font.family: Theme.fontMono
+                font.pixelSize: Theme.fsBody
+                font.weight: root.selected ? Font.Bold : Theme.weightBody
+                renderType: Text.NativeRendering
+            }
+
+            Text {
+                width: parent.width
+                text: root.entry.sub
+                visible: text !== ""
+                elide: Text.ElideRight
+                color: root.selected ? Theme.alpha(Theme.ink, 0.6) : Theme.muted
+                font.family: Theme.fontMono
+                font.pixelSize: Theme.fsMicro
+                renderType: Text.NativeRendering
+            }
+        }
+    }
+
+    // Trailing hint: the key that fires this row. Only the selected row shows
+    // one, because a column of ⏎ glyphs tells you nothing.
+    Text {
+        id: trailing
+        anchors.verticalCenter: parent.verticalCenter
+        anchors.right: parent.right
+        anchors.rightMargin: Theme.padM
+        text: root.selected ? root.badge : ""
+        color: Theme.alpha(Theme.ink, 0.55)
+        font.family: Theme.fontMono
+        font.pixelSize: Theme.fsMicro
+        font.letterSpacing: 2
+        renderType: Text.NativeRendering
+    }
+
+    HoverHandler {
+        onHoveredChanged: root.hovered = hovered
+    }
+
+    TapHandler {
+        acceptedButtons: Qt.LeftButton | Qt.RightButton
+        onTapped: (point, button) => {
+            if (button === Qt.RightButton) root.pinRequested();
+            else root.activated();
+        }
+    }
+}