refactor(nvim): 完整重写配置，支持 Go/Rust/Python/TypeScript 开发

- 架构重构：新增 plugins/lang/ 子目录，按语言拆分配置
- 补全引擎：nvim-cmp → blink.cmp + LuaSnip
- 文件浏览：新增 neo-tree（<Space>e）
- 语言支持：
  - Go: ray-x/go.nvim + dap-go + neotest-go
  - Rust: rustaceanvim + crates.nvim
  - Python: venv-selector + dap-python + neotest-python
  - TypeScript: typescript-tools.nvim（替换 ts_ls）
- LSP: lazydev + mason + mason-lspconfig + fidget + inc-rename
- 格式化: conform.nvim（lsp_format fallback，保存时自动格式化）
- Lint: nvim-lint（selene 替换 luacheck，Mason 可直接安装）
- UI: snacks.nvim（dashboard+notifier+picker）+ noice + lualine + bufferline
- 编辑增强: mini.ai + mini.surround + grug-far + flash + ufo + trouble v3
- 删除废弃文件: cmp/coding/null-ls/mason/lspconfig/go/python 等旧文件
- 修复: Neovim 0.12 treesitter query 校验报错（noice routes 过滤）
- 新增: NVIM_GUIDE.md 快捷键使用手册

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

nvim/lua/plugins/ui.lua

@@ -1,6 +1,93 @@
 -- ui.lua - UI 增强插件配置
+-- 包含：lualine, bufferline, neo-tree, noice, snacks(dashboard+notifier), indent-blankline
 
 return {
+  -- snacks.nvim - 现代通知 + Dashboard + 其他实用功能
+  {
+    "folke/snacks.nvim",
+    priority = 1000,
+    lazy = false,
+    opts = {
+      bigfile = { enabled = true },
+      dashboard = {
+        enabled = true,
+        sections = {
+          { section = "header" },
+          { section = "keys", gap = 1, padding = 1 },
+          { section = "startup" },
+        },
+        preset = {
+          header = [[
+  ███╗   ██╗███████╗ ██████╗ ██╗   ██╗██╗███╗   ███╗
+  ████╗  ██║██╔════╝██╔═══██╗██║   ██║██║████╗ ████║
+  ██╔██╗ ██║█████╗  ██║   ██║██║   ██║██║██╔████╔██║
+  ██║╚██╗██║██╔══╝  ██║   ██║╚██╗ ██╔╝██║██║╚██╔╝██║
+  ██║ ╚████║███████╗╚██████╔╝ ╚████╔╝ ██║██║ ╚═╝ ██║
+  ╚═╝  ╚═══╝╚══════╝ ╚═════╝   ╚═══╝  ╚═╝╚═╝     ╚═╝]],
+          keys = {
+            { icon = " ", key = "f", desc = "查找文件", action = ":lua Snacks.picker.files()" },
+            { icon = " ", key = "g", desc = "全局搜索", action = ":lua Snacks.picker.grep()" },
+            { icon = " ", key = "r", desc = "最近文件", action = ":lua Snacks.picker.recent()" },
+            { icon = " ", key = "c", desc = "编辑配置", action = ":e $MYVIMRC" },
+            { icon = "󰒲 ", key = "l", desc = "Lazy", action = ":Lazy" },
+            { icon = " ", key = "q", desc = "退出", action = ":qa" },
+          },
+        },
+      },
+      notifier = {
+        enabled = true,
+        timeout = 3000,
+        render = "compact",
+        style = "compact",
+        level = vim.log.levels.INFO,
+      },
+      quickfile = { enabled = true },
+      statuscolumn = { enabled = false },
+      words = {
+        enabled = true,
+        debounce = 100,
+        notify_end = false,
+        jumplist = true,
+      },
+      indent = {
+        enabled = true,
+        animate = { enabled = false },
+      },
+      picker = { enabled = true },
+      input = { enabled = true },
+    },
+    keys = {
+      { "<leader>un", function() Snacks.notifier.hide() end, desc = "清除通知" },
+      { "<leader>nh", function() Snacks.notifier.show_history() end, desc = "通知历史" },
+      { "<leader>nd", function() Snacks.notifier.hide() end, desc = "关闭所有通知" },
+      { "]w", function() Snacks.words.jump(1) end, desc = "下一个引用词" },
+      { "[w", function() Snacks.words.jump(-1) end, desc = "上一个引用词" },
+      { "<leader>gg", function() Snacks.lazygit() end, desc = "LazyGit" },
+      { "<leader>gf", function() Snacks.lazygit.log_file() end, desc = "当前文件 Git 历史" },
+      { "<leader>gl", function() Snacks.lazygit.log() end, desc = "Git 日志" },
+      -- Snacks picker
+      { "<leader>ff", function() Snacks.picker.files() end, desc = "查找文件" },
+      { "<leader>fr", function() Snacks.picker.recent() end, desc = "最近文件" },
+      { "<leader>fb", function() Snacks.picker.buffers() end, desc = "查找缓冲区" },
+      { "<leader>fg", function() Snacks.picker.grep() end, desc = "全局搜索" },
+      { "<leader>fw", function() Snacks.picker.grep_word() end, desc = "搜索当前单词", mode = { "n", "v" } },
+      { "<leader>fh", function() Snacks.picker.help() end, desc = "帮助页面" },
+      { "<leader>fk", function() Snacks.picker.keymaps() end, desc = "快捷键" },
+      { "<leader>fs", function() Snacks.picker.lsp_symbols() end, desc = "文档符号" },
+      { "<leader>fS", function() Snacks.picker.lsp_workspace_symbols() end, desc = "工作区符号" },
+      { "<leader>fd", function() Snacks.picker.diagnostics() end, desc = "诊断" },
+    },
+    init = function()
+      vim.notify = function(msg, level, opts)
+        if Snacks and Snacks.notifier then
+          Snacks.notifier.notify(msg, level, opts)
+        else
+          vim.api.nvim_notify(msg or "", level or 0, opts or {})
+        end
+      end
+    end,
+  },
+
   -- 状态栏
   {
     "nvim-lualine/lualine.nvim",
@@ -8,53 +95,34 @@ return {
     dependencies = { "nvim-tree/nvim-web-devicons" },
     opts = {
       options = {
-        theme = "auto",  -- 自动匹配当前主题
-        globalstatus = true,  -- 全局状态栏
+        theme = "tokyonight",
+        globalstatus = true,
+        disabled_filetypes = { statusline = { "dashboard", "snacks_dashboard" } },
         component_separators = { left = "", right = "" },
         section_separators = { left = "", right = "" },
-        disabled_filetypes = {
-          statusline = { "dashboard", "alpha" },
-          winbar = { "dashboard", "alpha" },
-        },
       },
       sections = {
         lualine_a = { { "mode", icon = "" } },
-        lualine_b = { 
+        lualine_b = {
           { "branch", icon = "" },
-          { 
-            "diff", 
-            symbols = { added = " ", modified = " ", removed = " " },
-            colored = true
-          }
+          { "diff", symbols = { added = " ", modified = " ", removed = " " } },
         },
         lualine_c = {
           {
             "diagnostics",
             sources = { "nvim_diagnostic" },
-            symbols = {
-              error = " ",
-              warn = " ",
-              info = " ",
-              hint = " ",
-            },
+            symbols = { error = " ", warn = " ", info = " ", hint = " " },
           },
           { "filetype", icon_only = true, separator = "", padding = { left = 1, right = 0 } },
           { "filename", path = 1, symbols = { modified = "  ", readonly = "  ", unnamed = "  " } },
         },
         lualine_x = {
-          -- Git 文件状态
           {
             function()
-              local status = ""
-              local ft = vim.bo.filetype
-              
-              -- 检查 LSP 是否连接
-              local clients = vim.lsp.get_active_clients({ bufnr = 0 })
-              if #clients > 0 then
-                status = status .. " LSP"
-              end
-              
-              return status
+              local clients = vim.lsp.get_clients({ bufnr = 0 })
+              if #clients == 0 then return "" end
+              local names = vim.tbl_map(function(c) return c.name end, clients)
+              return " " .. table.concat(names, ", ")
             end,
           },
           { "encoding" },
@@ -62,49 +130,47 @@ return {
           { "filetype" },
         },
         lualine_y = {
-          { "progress", separator = " ", padding = { left = 1, right = 1 } },
-          { "location", padding = { left = 1, right = 1 } },
-        },
-        lualine_z = {
-          function()
-            return " " .. os.date("%R")
-          end,
+          { "progress", padding = { left = 1, right = 1 } },
+          { "location", padding = { left = 0, right = 1 } },
         },
+        lualine_z = { function() return " " .. os.date("%R") end },
       },
-      tabline = {},
-      extensions = { "neo-tree", "lazy" },
+      extensions = { "neo-tree", "lazy", "toggleterm", "mason" },
     },
   },
-  
-  -- 缩进线
+
+  -- 缓冲区标签页
   {
-    "lukas-reineke/indent-blankline.nvim",
-    main = "ibl",
-    event = "BufReadPost",
+    "akinsho/bufferline.nvim",
+    event = "VeryLazy",
+    keys = {
+      { "<leader>bp", "<Cmd>BufferLineTogglePin<CR>", desc = "标记缓冲区" },
+      { "<leader>bP", "<Cmd>BufferLineGroupClose ungrouped<CR>", desc = "关闭未标记缓冲区" },
+      { "<leader>bo", "<Cmd>BufferLineCloseOthers<CR>", desc = "关闭其他缓冲区" },
+      { "<leader>br", "<Cmd>BufferLineCloseRight<CR>", desc = "关闭右侧缓冲区" },
+      { "<leader>bl", "<Cmd>BufferLineCloseLeft<CR>", desc = "关闭左侧缓冲区" },
+      { "<S-h>", "<cmd>BufferLineCyclePrev<cr>", desc = "上一个缓冲区" },
+      { "<S-l>", "<cmd>BufferLineCycleNext<cr>", desc = "下一个缓冲区" },
+    },
     opts = {
-      indent = {
-        char = "│",  -- 缩进字符
-        tab_char = "│",  -- Tab 缩进字符
-      },
-      scope = { enabled = false },  -- 禁用范围高亮
-      exclude = {
-        filetypes = {
-          "help",
-          "alpha",
-          "dashboard",
-          "neo-tree",
-          "Trouble",
-          "lazy",
-          "mason",
-          "notify",
-          "toggleterm",
-          "lazyterm",
+      options = {
+        close_command = function(n) require("mini.bufremove").delete(n, false) end,
+        right_mouse_command = function(n) require("mini.bufremove").delete(n, false) end,
+        diagnostics = "nvim_lsp",
+        always_show_bufferline = false,
+        diagnostics_indicator = function(_, _, diag)
+          local ret = (diag.error and " " .. diag.error .. " " or "")
+            .. (diag.warning and " " .. diag.warning or "")
+          return vim.trim(ret)
+        end,
+        offsets = {
+          { filetype = "neo-tree", text = "文件浏览器", highlight = "Directory", text_align = "left" },
         },
       },
     },
   },
-  
-  -- 文件树
+
+  -- 文件树（侧边栏）
   {
     "nvim-neo-tree/neo-tree.nvim",
     branch = "v3.x",
@@ -115,20 +181,21 @@ return {
       "MunifTanjim/nui.nvim",
     },
     keys = {
-      { "<leader>e", "<cmd>Neotree toggle<cr>", desc = "切换文件浏览器" },
+      { "<leader>e", "<cmd>Neotree toggle<cr>", desc = "文件浏览器" },
       { "<leader>o", "<cmd>Neotree focus<cr>", desc = "聚焦文件浏览器" },
+      { "<leader>ge", "<cmd>Neotree float git_status<cr>", desc = "Git 状态" },
     },
     opts = {
       sources = { "filesystem", "buffers", "git_status", "document_symbols" },
-      open_files_do_not_replace_types = { "terminal", "Trouble", "qf", "edgy" },
+      open_files_do_not_replace_types = { "terminal", "Trouble", "trouble", "qf" },
       filesystem = {
         bind_to_cwd = false,
         follow_current_file = { enabled = true },
         use_libuv_file_watcher = true,
         filtered_items = {
-          visible = true,  -- 显示被过滤的项目
-          hide_dotfiles = false,  -- 不隐藏点文件
-          hide_gitignored = false,  -- 不隐藏被 gitignore 的文件
+          visible = true,
+          hide_dotfiles = false,
+          hide_gitignored = false,
         },
       },
       window = {
@@ -143,188 +210,90 @@ return {
       },
       default_component_configs = {
         indent = {
-          with_expanders = true,  -- 启用展开图标
+          with_expanders = true,
           expander_collapsed = "",
           expander_expanded = "",
           expander_highlight = "NeoTreeExpander",
         },
         git_status = {
           symbols = {
-            -- 状态图标
-            added     = "✚",  -- 或 "✚"
-            modified  = "",  -- 或 ""
-            deleted   = "✖",  -- 或 "✖"
-            renamed   = "",  -- 或 ""
-            untracked = "",
-            ignored   = "",
-            unstaged  = "",
-            staged    = "",
-            conflict  = "",
-          },
-        },
-      },
-      commands = {
-        -- 添加自定义命令，如创建文件时创建路径
-        parent_or_close = function(state)
-          local node = state.tree:get_node()
-          if (node.type == "directory" or node:has_children()) and node:is_expanded() then
-            state.commands.toggle_node(state)
-          else
-            require("neo-tree.ui.renderer").focus_node(state, node:get_parent_id())
-          end
-        end,
-        child_or_open = function(state)
-          local node = state.tree:get_node()
-          if node.type == "directory" or node:has_children() then
-            if not node:is_expanded() then
-              state.commands.toggle_node(state)
-            else
-              require("neo-tree.ui.renderer").focus_node(state, node:get_child_ids()[1])
-            end
-          else
-            state.commands.open(state)
-          end
-        end,
-      },
-    },
-  },
-  
-  -- 顶部标签页
-  {
-    "akinsho/bufferline.nvim",
-    event = "VeryLazy",
-    keys = {
-      { "<leader>bp", "<Cmd>BufferLineTogglePin<CR>", desc = "标记/取消标记缓冲区" },
-      { "<leader>bP", "<Cmd>BufferLineGroupClose ungrouped<CR>", desc = "关闭未标记的缓冲区" },
-      { "<leader>bo", "<Cmd>BufferLineCloseOthers<CR>", desc = "关闭其他缓冲区" },
-      { "<leader>br", "<Cmd>BufferLineCloseRight<CR>", desc = "关闭右侧缓冲区" },
-      { "<leader>bl", "<Cmd>BufferLineCloseLeft<CR>", desc = "关闭左侧缓冲区" },
-      { "<S-h>", "<cmd>BufferLineCyclePrev<cr>", desc = "上一个缓冲区" },
-      { "<S-l>", "<cmd>BufferLineCycleNext<cr>", desc = "下一个缓冲区" },
-    },
-    opts = {
-      options = {
-        close_command = function(n) require("mini.bufremove").delete(n, false) end,
-        right_mouse_command = function(n) require("mini.bufremove").delete(n, false) end,
-        diagnostics = "nvim_lsp",  -- 显示诊断
-        always_show_bufferline = false,
-        diagnostics_indicator = function(_, _, diag)
-          local icons = {
-            Error = " ",
-            Warn = " ",
-            Hint = " ",
-            Info = " ",
-          }
-          local ret = (diag.error and icons.Error .. diag.error .. " " or "")
-          .. (diag.warning and icons.Warn .. diag.warning or "")
-          return vim.trim(ret)
-        end,
-        offsets = {
-          {
-            filetype = "neo-tree",
-            text = "文件浏览器",
-            highlight = "Directory",
-            text_align = "left",
+            added = "✚", modified = "", deleted = "✖",
+            renamed = "", untracked = "", ignored = "",
+            unstaged = "", staged = "", conflict = "",
           },
         },
       },
     },
   },
-  
-  -- 通知系统
+
+  -- noice.nvim - 命令行/通知/LSP UI 增强
   {
-    "rcarriga/nvim-notify",
-    keys = {
-      {
-        "<leader>un",
-        function()
-          require("notify").dismiss({ silent = true, pending = true })
-        end,
-        desc = "清除所有通知",
-      },
-    },
-    opts = {
-      timeout = 3000,
-      max_height = function()
-        return math.floor(vim.o.lines * 0.75)
-      end,
-      max_width = function()
-        return math.floor(vim.o.columns * 0.75)
-      end,
-      on_open = function(win)
-        vim.api.nvim_win_set_config(win, { zindex = 100 })
-      end,
-    },
-    init = function()
-      -- 当 "notify" 可用时，将其替换为 vim.notify
-      vim.notify = function(...)
-        local loaded, notify = pcall(require, "notify")
-        if loaded then
-          vim.notify = notify
-          return notify(...)
-        else
-          return vim.api.nvim_notify(...)
-        end
-      end
-    end,
-  },
-  -- 快捷键提示
-  {
-    "folke/which-key.nvim",
+    "folke/noice.nvim",
     event = "VeryLazy",
+    dependencies = { "MunifTanjim/nui.nvim" },
     opts = {
-      plugins = {
-        marks = true,      -- 显示标记
-        registers = true,  -- 显示寄存器
-        spelling = {
-          enabled = true,  -- 启用拼写建议
-          suggestions = 20,
+      lsp = {
+        override = {
+          ["vim.lsp.util.convert_input_to_markdown_lines"] = true,
+          ["vim.lsp.util.stylize_markdown"] = true,
         },
-        presets = {
-          operators = true,    -- 添加操作符帮助
-          motions = true,      -- 添加动作帮助
-          text_objects = true, -- 添加文本对象帮助
-          windows = true,      -- 添加窗口帮助 (meta-w)
-          nav = true,          -- 添加导航帮助
-          z = true,            -- 添加折叠帮助
-          g = true,            -- 添加 g 命令帮助
+        hover = { enabled = true },
+        signature = { enabled = false }, -- blink.cmp 处理签名
+        progress = { enabled = true, format_done = "" },
+      },
+      routes = {
+        {
+          -- 屏蔽 treesitter query 字段兼容性警告（Neovim 0.12 校验更严格，功能不受影响）
+          filter = {
+            event = "msg_show",
+            any = {
+              { find = "Invalid field name" },
+              { find = "Invalid node type" },
+              { find = "Query error" },
+            },
+          },
+          opts = { skip = true },
+        },
+        {
+          filter = {
+            event = "msg_show",
+            any = {
+              { find = "%d+L, %d+B" },
+              { find = "; after #%d+" },
+              { find = "; before #%d+" },
+            },
+          },
+          view = "mini",
         },
       },
-      icons = {
-        breadcrumb = "»", -- 面包屑分隔符
-        separator = "➜", -- 键映射前缀和命令之间的分隔符
-        group = "+", -- 组图标
-      },
-      window = {
-        border = "rounded",   -- 边框样式
-        position = "bottom",  -- 位置
-        margin = { 1, 0, 1, 0 }, -- 边距
-        padding = { 1, 1, 1, 1 }, -- 内边距
-      },
-      layout = {
-        height = { min = 3, max = 25 },  -- 最小和最大高度
-        width = { min = 20, max = 50 },  -- 最小和最大宽度
-        spacing = 3,  -- 间距
-        align = "center",  -- 对齐方式
-      },
-      ignore_missing = false,  -- 不忽略缺少的键映射
-      hidden = { "<silent>", "<cmd>", "<Cmd>", "<CR>", "^:", "^ ", "^call ", "^lua " },  -- 隐藏的命令前缀
-      show_help = true,  -- 显示帮助信息
-      triggers = "auto",  -- 触发自动显示
-      triggers_nowait = {  -- 不等待这些前缀的键映射
-        -- 字符表示操作符等待模式
-        "`",
-        "'",
-        "g`",
-        "g'",
-        '"',
-        "<c-r>",
-        "z=",
+      presets = {
+        bottom_search = true,
+        command_palette = true,
+        long_message_to_split = true,
+        inc_rename = true,
       },
     },
-    config = function(_, opts)
-      local wk = require("which-key")
-      wk.setup(opts)
-    end,
+    keys = {
+      { "<leader>snl", function() require("noice").cmd("last") end, desc = "最后消息" },
+      { "<leader>snh", function() require("noice").cmd("history") end, desc = "Noice 历史" },
+      { "<leader>sna", function() require("noice").cmd("all") end, desc = "所有消息" },
+    },
   },
-} 
+
+  -- 缩进线
+  {
+    "lukas-reineke/indent-blankline.nvim",
+    main = "ibl",
+    event = "BufReadPost",
+    opts = {
+      indent = { char = "│", tab_char = "│" },
+      scope = { enabled = false },
+      exclude = {
+        filetypes = {
+          "help", "snacks_dashboard", "neo-tree", "Trouble", "trouble",
+          "lazy", "mason", "toggleterm",
+        },
+      },
+    },
+  },
+}