添加 diffview, 修改telescope 初次加载无法下载插件报错问题

nvim/lua/plugins/telescope.lua

@@ -19,22 +19,29 @@ return {
             { "<leader>fk", "<cmd>Telescope keymaps<cr>",     desc = "查找键位" },
             { "<leader>fr", "<cmd>Telescope oldfiles<cr>",    desc = "最近文件" },
         },
+        -- 启动即加载：ui-select 扩展需要全局接管 vim.ui.select，
+        -- 懒加载会导致未触发 :Telescope 时（如 <leader>rr）回退到原生 UI
+        lazy = false,
         opts = {
             defaults = {
                 prompt_prefix   = " > ",
                 selection_caret = " > ",
                 layout_strategy = "flex",
             },
-            extensions = {
-                ["ui-select"] = {
-                    require("telescope.themes").get_dropdown({}),
-                },
-            },
         },
         config = function(_, opts)
             local telescope = require("telescope")
+
+            -- extensions 需要 require telescope.themes，必须在 config 里构造
+            opts.extensions = {
+                ["ui-select"] = {
+                    require("telescope.themes").get_dropdown({}),
+                },
+            }
+
             telescope.setup(opts)
-            telescope.load_extension("ui-select")
+            -- 用 pcall 保护，避免 ui-select 扩展未安装时崩溃
+            pcall(telescope.load_extension, "ui-select")
         end,
     },
 }