Agent Skills: Implement /skills reload (#15865)

packages/core/src/tools/tool-registry.ts

@@ -225,6 +225,15 @@ export class ToolRegistry {
     this.allKnownTools.set(tool.name, tool);
   }
 
+  /**
+   * Unregisters a tool definition by name.
+   *
+   * @param name - The name of the tool to unregister.
+   */
+  unregisterTool(name: string): void {
+    this.allKnownTools.delete(name);
+  }
+
   /**
    * Sorts tools as:
    * 1. Built in tools.