Route menu ids ahead of app keyword aliases (#6563)

An installed app whose .desktop Keywords contain a menu id captured the
route: htop ships Keywords=system;..., so SUPER+ESCAPE opened an empty
"Htop" menu instead of the System menu once the Apps menu had merged its
rows. Exact ids now win, and app rows are no longer routable at all —
their keywords remain search-only.

Fixes #6554

Reported-by: Craig Derington (https://github.com/craigderington)

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

shell/plugins/menu/MenuModel.js

@@ -167,6 +167,28 @@ function item(items, id) {
   return items && items[id] ? items[id] : null
 }
 
+// Routes may name a real id (`system`, `setup.power`) or an alias declared in
+// JSONC (`power-menu`, `settings`). An exact id beats any alias, and app rows
+// are never routable: their aliases carry .desktop Keywords and GenericName
+// for search, so an installed application could otherwise shadow a menu route
+// (htop ships `Keywords=system;...`). Unknown strings fall through as the
+// literal input so misspellings still attempt to open that id.
+function resolveRoute(items, itemOrder, input) {
+  var raw = String(input || "").toLowerCase().replace(/_/g, "-")
+  if (!raw || raw === "go" || raw === "menu") return "root"
+  if (item(items, raw)) return raw
+  var order = Array.isArray(itemOrder) ? itemOrder : []
+  for (var i = 0; i < order.length; i++) {
+    var entry = item(items, order[i])
+    if (!entry || entry.kind === "app" || !entry.aliases) continue
+    for (var j = 0; j < entry.aliases.length; j++) {
+      var alias = String(entry.aliases[j] || "").toLowerCase().replace(/_/g, "-")
+      if (alias === raw) return entry.id
+    }
+  }
+  return raw
+}
+
 function slugify(value) {
   return String(value || "").toLowerCase().replace(/[^a-z0-9]+/g, "-").replace(/^-+|-+$/g, "") || "item"
 }
@@ -360,6 +382,7 @@ if (typeof module !== "undefined") {
     mergeAppRows: mergeAppRows,
     swapProviderRows: swapProviderRows,
     item: item,
+    resolveRoute: resolveRoute,
     slugify: slugify,
     depthFor: depthFor,
     pathFor: pathFor,