refactor(search): unify dropdown filtering on the shared ranked matcher

Branch, project, agent, model, provider, stash, SSH-host, skill-catalog
and archive filters each had their own toLowerCase().includes (or no
ordering at all); the git branch and gitmoji pickers also let cmdk
re-filter and reorder on top of the manual filter, silently dropping
rows. All of them now go through rankByQuery/matchesRankQuery: results
are relevance-ordered, multi-word queries match in any order, matching
ignores punctuation, and cmdk filtering is disabled where the ranked
list is already final. rankBranchesForQuery keeps relevance order
instead of re-sorting matches alphabetically; the model picker now also
matches model ids.

packages/ui/src/components/views/agent-manager/AgentManagerSidebar.tsx

@@ -1,3 +1,4 @@
+import { rankByQuery } from '@/lib/search/fuzzySearch';
 import React from 'react';
 import { toast } from '@/components/ui';
 import { Input } from '@/components/ui/input';
@@ -214,13 +215,10 @@ export const AgentManagerSidebar: React.FC<AgentManagerSidebarProps> = ({
 
   const MAX_VISIBLE = 5;
 
-  const filteredGroups = React.useMemo(() => {
-    if (!searchQuery.trim()) return groups;
-    const query = searchQuery.toLowerCase();
-    return groups.filter(group =>
-      group.name.toLowerCase().includes(query)
-    );
-  }, [searchQuery, groups]);
+  const filteredGroups = React.useMemo(
+    () => rankByQuery(groups, searchQuery, (group) => [group.name]),
+    [searchQuery, groups],
+  );
 
   const visibleGroups = showAll ? filteredGroups : filteredGroups.slice(0, MAX_VISIBLE);
   const remainingCount = filteredGroups.length - MAX_VISIBLE;