fix: search_tools now includes direct tools (snapshot_project etc.)

- searchTools() previously only searched routed tool categories, so
  direct tools like snapshot_project, save_project, create_project
  returned 0 results when Claude called search_tools('snapshot')
- Direct tools are now searched first, with a hint that they must be
  called directly (not via execute_tool)

Also includes routing.py zone-inset fix for rounded board corners
(already staged from previous session)

src/tools/registry.ts

@@ -228,16 +228,24 @@ export function searchTools(query: string): SearchResult[] {
   const q = query.toLowerCase();
   const matches: SearchResult[] = [];
 
-  // This is a placeholder - we'll populate descriptions from actual tool definitions
-  // For now, we'll search by name and category
+  // Search direct tools first
+  for (const toolName of directToolNames) {
+    if (toolName.toLowerCase().includes(q)) {
+      matches.push({
+        category: "direct",
+        tool: toolName,
+        description: `${toolName} (direct tool — call directly, no execute_tool needed)`
+      });
+    }
+  }
+
+  // Search routed tools by name and category
   for (const category of toolCategories) {
-    // Check if category name or description matches
     const categoryMatch =
       category.name.toLowerCase().includes(q) ||
       category.description.toLowerCase().includes(q);
 
     for (const toolName of category.tools) {
-      // Check if tool name matches or category matches
       if (toolName.toLowerCase().includes(q) || categoryMatch) {
         matches.push({
           category: category.name,