Open panel hotkeys on the focused monitor (#6613)

A bar surface is built per monitor, so panel routing had several live copies
of the same widget to choose from and took whichever registered its slot
first. Pick the one on the monitor Hyprland has focused instead, preferring
an already-open copy so hide and toggle still reach the visible panel.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

shell/plugins/bar/BarModel.js

@@ -154,6 +154,29 @@ function pickDrawnSlot(slots) {
   return placeholder
 }
 
+// A bar surface is built per monitor, so a panel hotkey has several live
+// copies of the same widget to route to, and the panel opens on whichever
+// monitor's copy answers. Candidates are `{ slot, screenName, opened }`.
+//
+// An open copy wins first: hide and toggle have to reach the panel the user
+// can actually see, wherever it was opened from. Otherwise the focused
+// monitor's copy wins, so a summon lands where the user is working instead of
+// on whichever output registered its slot first. Neither narrowing applies on
+// a single monitor, or when the focused output has no bar of its own.
+function pickPanelSlot(candidates, focusedScreen) {
+  var rows = Array.isArray(candidates) ? candidates : []
+  var pool = rows.filter(function(row) { return row && row.opened === true })
+  if (pool.length === 0) pool = rows.filter(function(row) { return !!row })
+
+  var focused = String(focusedScreen || "")
+  if (focused) {
+    var onFocused = pool.filter(function(row) { return row.screenName === focused })
+    if (onFocused.length > 0) pool = onFocused
+  }
+
+  return pickDrawnSlot(pool.map(function(row) { return row.slot }))
+}
+
 // Resolve a pointer anywhere along the bar to the closest insertion edge.
 // Requiring the pointer to sit inside another widget makes the empty space
 // around a centered group a dead zone, even though it visually reads as the
@@ -189,6 +212,7 @@ if (typeof module !== "undefined") {
   module.exports = {
     isDrawnSlot: isDrawnSlot,
     pickDrawnSlot: pickDrawnSlot,
+    pickPanelSlot: pickPanelSlot,
     nearestDropTarget: nearestDropTarget,
     normalizePosition: normalizePosition,
     entrySettings: entrySettings,