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/colorscheme.lua

@@ -1,101 +1,63 @@
 -- colorscheme.lua - 主题配置
 
 return {
-  -- 主题：Tokyo Night
   {
     "folke/tokyonight.nvim",
-    lazy = false,  -- 不延迟加载主题
-    priority = 1000,  -- 确保先加载主题
-    config = function()
-      require("tokyonight").setup({
-        style = "night",  -- 可选值："storm", "moon", "night", "day"
-        transparent = false,  -- 启用背景透明
-        terminal_colors = true,  -- 设置终端颜色
-        styles = {
-          comments = { italic = true },
-          keywords = { italic = true },
-          functions = {},
-          variables = {},
-          sidebars = "dark",
-          floats = "dark",
-        },
-        sidebars = { "qf", "help", "terminal", "packer", "NvimTree", "Trouble" },
-        dim_inactive = false,  -- 非活动窗口变暗
-        lualine_bold = true,  -- 在状态栏中使用粗体
-        
-        on_highlights = function(hl, c)
-          -- 自定义高亮组
-          hl.CursorLineNr = { fg = c.orange, bold = true }
-          hl.LineNr = { fg = c.orange, bold = false }
-          hl.LineNrAbove = { fg = c.fg_gutter }
-          hl.LineNrBelow = { fg = c.fg_gutter }
-          
-          -- 浮动窗口
-          hl.NormalFloat = { bg = c.bg_dark }
-          hl.FloatBorder = { bg = c.bg_dark, fg = c.blue }
-        end,
-      })
-      
-      -- 加载主题
+    lazy = false,
+    priority = 1000,
+    opts = {
+      style = "night",
+      transparent = false,
+      terminal_colors = true,
+      styles = {
+        comments = { italic = true },
+        keywords = { italic = true },
+        functions = {},
+        variables = {},
+        sidebars = "dark",
+        floats = "dark",
+      },
+      sidebars = { "qf", "help", "terminal", "Trouble", "neo-tree" },
+      dim_inactive = false,
+      lualine_bold = true,
+      on_highlights = function(hl, c)
+        hl.CursorLineNr = { fg = c.orange, bold = true }
+        hl.LineNr = { fg = c.orange, bold = false }
+        hl.LineNrAbove = { fg = c.fg_gutter }
+        hl.LineNrBelow = { fg = c.fg_gutter }
+        hl.NormalFloat = { bg = c.bg_dark }
+        hl.FloatBorder = { bg = c.bg_dark, fg = c.blue }
+      end,
+    },
+    config = function(_, opts)
+      require("tokyonight").setup(opts)
       vim.cmd.colorscheme("tokyonight")
-    end
+    end,
   },
-  
-  -- 替代主题：Catppuccin
+
   {
     "catppuccin/nvim",
     name = "catppuccin",
-    lazy = true,  -- 懒加载此主题
+    lazy = true,
     opts = {
-      flavour = "mocha",  -- 风格: latte, frappe, macchiato, mocha
+      flavour = "mocha",
       term_colors = true,
       transparent_background = false,
-      styles = {
-        comments = { "italic" },
-        conditionals = { "italic" },
-        loops = {},
-        functions = {},
-        keywords = {},
-        strings = {},
-        variables = {},
-        numbers = {},
-        booleans = {},
-        properties = {},
-        types = {},
-        operators = {},
-      },
       integrations = {
         cmp = true,
         gitsigns = true,
-        nvimtree = true,
         treesitter = true,
         mason = true,
-        telescope = {
-          enabled = true,
-          style = "nvchad",
-        },
-        native_lsp = {
-          enabled = true,
-          virtual_text = {
-            errors = { "italic" },
-            hints = { "italic" },
-            warnings = { "italic" },
-            information = { "italic" },
-          },
-          underlines = {
-            errors = { "underline" },
-            hints = { "underline" },
-            warnings = { "underline" },
-            information = { "underline" },
-          },
-        },
+        telescope = { enabled = true },
+        native_lsp = { enabled = true },
+        blink_cmp = true,
       },
     },
   },
-  
-  -- 图标支持
+
   {
     "nvim-tree/nvim-web-devicons",
     lazy = true,
   },
-} 
+}
+