fix: show MCP tools in all provider groups when shared

When multiple MCP servers expose the same tool names (e.g., several
kusto-mcp instances), each server's group now shows its tools instead
of only the first server getting the tools and others showing 0/0.

Deduplicate the effectiveAutoApprovedCount to avoid double-counting
shared tools in the pill header.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/renderer/components/ChatPane.tsx

@@ -131,15 +131,17 @@ export function ChatPane({
   );
   const effectiveAutoApprovedCount = useMemo(() => {
     const groups = groupApprovalToolsByProvider(approvalTools, toolingSettings);
-    let count = 0;
+    const counted = new Set<string>();
     for (const group of groups) {
       if (group.serverApprovalKey && effectiveAutoApproved.has(group.serverApprovalKey)) {
-        count += group.tools.length;
+        for (const tool of group.tools) counted.add(tool.id);
       } else {
-        count += group.tools.filter((t) => effectiveAutoApproved.has(t.id)).length;
+        for (const tool of group.tools) {
+          if (effectiveAutoApproved.has(tool.id)) counted.add(tool.id);
+        }
       }
     }
-    return count;
+    return counted.size;
   }, [approvalTools, effectiveAutoApproved, toolingSettings]);
 
   useEffect(() => {

src/shared/domain/tooling.ts

@@ -306,6 +306,22 @@ export function groupApprovalToolsByProvider(
   const groups = new Map<string, ApprovalToolGroup>();
 
   for (const tool of tools) {
+    // Place MCP tools in every provider group they belong to, so each server
+    // shows its own tools even when multiple servers share the same tool names.
+    if (tool.kind === 'mcp' && tool.providerIds.length > 1) {
+      for (const providerId of tool.providerIds) {
+        const groupId = `mcp:${providerId}`;
+        let group = groups.get(groupId);
+        if (!group) {
+          const label = serverNames.get(providerId) ?? providerId;
+          group = { id: groupId, label, kind: 'mcp', tools: [] };
+          groups.set(groupId, group);
+        }
+        group.tools.push(tool);
+      }
+      continue;
+    }
+
     const groupKey = resolveApprovalToolGroupKey(tool, serverNames, profileNames);
     let group = groups.get(groupKey.id);
     if (!group) {