Make Shell a category, the bar legible, and the dock a real dock

Desktop & Dock becomes Shell — Bar, Dock, Control Center, Tiling,
Workspaces — the home for everything Quickshell draws. The settings-
management cluster moves to System as Sync & Backup, Appearance's
Shell tab dissolves, and 24-hour time finally lives on Date & Time,
which always owned it.

The bar gets what it never had: a way to survive the wallpaper. A
second neutral text family (follow theme, or forced light or dark),
a one-layer shadow under every glyph, and a gradient scrim for
wallpapers nothing else survives — all off by default, pixel-identical
until asked. Widgets earn toggles (weather, media, clipboard, calendar
countdown), the vitals cluster stops leaving a dead pill behind, and
Control Center's sections learn to step aside.

The dock graduates from MVP: a context menu with window rows, pin,
unpin, quit and new-window; scroll an icon to cycle its windows; drag
to reorder on the dock itself; hover previews with one-shot captures;
and "Add App to Dock" in the launcher. Three real bugs died en route —
menus that slid away with the autohide, a readonly-property crash on
every menu open, and a drag that drifted half a slot per icon on side
docks. The pinned-apps editor in Settings becomes a drag strip.

166 contracts; the full suite is green except two live display and
switcher tests that cannot run behind a locked session — re-verified
on unlock.

Claude-Session: https://claude.ai/code/session_01Ms2FbjQy31TVf3CEvQhGM8

tests/quickshell/dock-position-contract

@@ -23,6 +23,9 @@
 #      centred while its reveal strip spans the whole edge -- so a region that
 #      forgets the body's own offset lands somewhere the pointer is not, hover
 #      drops on the frame the dock arrives, and it hides under a still cursor.
+#   8. The dock's own drag-to-reorder commits once, on release, and measures a
+#      slot from a real icon rather than assuming one -- a DockItem is taller
+#      than it is wide, so a constant is wrong on one of the two orientations.
 #
 # The geometry checks launch isolated shells against a temporary config. The
 # real settings are read to build them and never written.
@@ -33,14 +36,14 @@ repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
 shell_dir="$repo_dir/config/dot/quickshell"
 dock="$shell_dir/modules/dock/Dock.qml"
 body="$shell_dir/modules/dock/DockBody.qml"
-editor="$shell_dir/modules/settings/DockPinsEditor.qml"
+strip="$shell_dir/modules/settings/DockPinsStrip.qml"
 
 fail() {
     printf 'dock position contract: %s\n' "$1" >&2
     exit 1
 }
 
-for path in "$dock" "$body" "$editor"; do
+for path in "$dock" "$body" "$strip"; do
     [[ -r "$path" ]] || fail "missing $path"
 done
 
@@ -57,12 +60,32 @@ grep -q 'implicitWidth: root.vertical ? ' "$dock" \
 grep -q 'wanted.length === 0' "$dock" \
     || fail 'an empty screen list is not treated as every screen'
 
-grep -q 'preventStealing: true' "$editor" \
+grep -q 'preventStealing: true' "$strip" \
     || fail 'the drag grip does not set preventStealing, so the page will scroll instead of reordering'
-# The arrows are the keyboard-reachable path and predate the grip. A grip is not
-# a replacement for them.
-grep -q 'text: "↑"' "$editor" \
-    || fail 'the move-up button was removed, leaving no keyboard-reachable reorder'
+# A drag is not reachable from the keyboard, so the strip owes the keyboard its
+# own path. The old editor spelled it as ↑/↓ buttons; the strip spells it as
+# arrow keys on a focused icon. Either way it has to exist.
+grep -q 'Keys.onLeftPressed' "$strip" && grep -q 'Keys.onRightPressed' "$strip" \
+    || fail 'the pinned strip offers no keyboard-reachable reorder'
+grep -q 'activeFocusOnTab: true' "$strip" \
+    || fail 'a pinned icon cannot be reached by Tab, so the keyboard reorder is unreachable'
+
+# ── 8. The dock's own drag ─────────────────────────────────────────────────
+# Dragging an icon along the dock moves the same pin the strip does, so it has
+# the same two ways to go wrong.
+
+# One write per gesture. Committing per slot crossed rewrites settings.json a
+# dozen times for one drag, and every rewrite re-evaluates the model underneath
+# the gesture.
+[[ "$(grep -c 'DesktopPreferences.set("dockPinned"' "$body")" -eq 1 ]] \
+    || fail 'the dock commits its reorder more than once per gesture, or not through DesktopPreferences'
+
+# A DockItem is taller than it is wide -- the running dots sit under the icon --
+# so a slot down a side dock is further than a slot across a bottom one. Reading
+# the pitch from the item that started the drag is what keeps both honest; a
+# constant here was wrong on one of the two orientations.
+grep -q 'signal dragStarted(real pitch)' "$shell_dir/modules/dock/DockItem.qml" \
+    || fail 'the dock drag assumes a slot size instead of measuring the item, so a side dock steps wrong'
 
 # ── 5. Reordering keeps every entry, exactly once ───────────────────────────