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

nvim/lua/plugins/diffview.lua

@@ -0,0 +1,35 @@
+-- ============================================================================
+-- Git diff 视图 (diffview)
+-- 仓库级 diff 总览 + 提交历史对比，补充 gitsigns 的行内能力
+-- ============================================================================
+
+return {
+    {
+        "sindrets/diffview.nvim",
+        cmd = "DiffviewOpen",
+        keys = {
+            -- 只保留 3 个核心键位：打开/关闭 diff 视图、查看历史
+            { "<leader>go", "<cmd>DiffviewOpen<cr>",          desc = "查看改动" },
+            { "<leader>gq", "<cmd>DiffviewClose<cr>",         desc = "关闭 diff" },
+            { "<leader>gl", "<cmd>DiffviewFileHistory %<cr>", desc = "文件历史" },
+        },
+        opts = {
+            file_panel = {
+                listing_style = "tree",
+                tree_options = {
+                    flatten_dirs = true,
+                    folder_statuses = "only_folded",
+                },
+            },
+            keymaps = {
+                view = {
+                    -- 覆盖全局 <leader>q：在 diffview 里关闭整个 diffview，而非单个窗口
+                    { "n", "<leader>q", "<cmd>DiffviewClose<cr>", { desc = "关闭 diffview" } },
+                },
+                file_panel = {
+                    { "n", "<leader>q", "<cmd>DiffviewClose<cr>", { desc = "关闭 diffview" } },
+                },
+            },
+        },
+    },
+}