[neovim] Add MCPHub integration

Enhance snacks plugin configuration by adding:
- MCPHub integration with dedicated menu entry
- Explorer configuration for picker with hidden and ignored files
  enabled

.config/nvim/lua/plugins/avante.lua

@@ -9,4 +9,31 @@ require("avante").setup({
 		provider = "tavily",
 	},
 	hints = { enabled = false },
+	behaviour = {
+		enable_claude_text_editor_tool_mode = true,
+	},
+
+	system_prompt = function()
+		local hub = require("mcphub").get_hub_instance()
+		return hub:get_active_servers_prompt()
+	end,
+	custom_tools = function()
+		return {
+			require("mcphub.extensions.avante").mcp_tool(),
+		}
+	end,
+
+	-- using the MCP server
+	disabled_tools = {
+		"list_files",
+		"search_files",
+		"read_file",
+		"create_file",
+		"rename_file",
+		"delete_file",
+		"create_dir",
+		"rename_dir",
+		"delete_dir",
+		"bash",
+	},
 })