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/lint.lua

@@ -1,78 +1,39 @@
--- lint.lua - 代码检查配置
--- 使用 nvim-lint 替代 null-ls 的诊断功能
--- 与 conform.nvim 配合：conform 负责格式化，lint 负责诊断
+-- lint.lua - 代码静态检查（nvim-lint）
 
 return {
-	{
-		"mfussenegger/nvim-lint",
-		event = { "BufReadPre", "BufNewFile" },
-		config = function()
-			local lint = require("lint")
+  {
+    "mfussenegger/nvim-lint",
+    event = { "BufReadPre", "BufNewFile" },
+    config = function()
+      local lint = require("lint")
 
-			-- 按文件类型配置 linter
-			lint.linters_by_ft = {
-				-- Python: 使用 ruff 替代 flake8/pylint
-				python = { "ruff" },
+      lint.linters_by_ft = {
+        python = { "ruff" },
+        lua = { "selene" },
+        go = { "golangcilint" },
+        javascript = { "eslint_d" },
+        typescript = { "eslint_d" },
+        javascriptreact = { "eslint_d" },
+        typescriptreact = { "eslint_d" },
+        markdown = { "markdownlint" },
+        yaml = { "yamllint" },
+        dockerfile = { "hadolint" },
+        sh = { "shellcheck" },
+        bash = { "shellcheck" },
+      }
 
-				-- Lua
-				lua = { "luacheck" },
+      local lint_augroup = vim.api.nvim_create_augroup("nvim_lint", { clear = true })
 
-				-- Go
-				go = { "golangcilint" },
+      vim.api.nvim_create_autocmd({ "BufWritePost", "BufReadPost", "InsertLeave" }, {
+        group = lint_augroup,
+        callback = function()
+          lint.try_lint()
+        end,
+      })
 
-				-- JavaScript/TypeScript
-				javascript = { "eslint" },
-				typescript = { "eslint" },
-				javascriptreact = { "eslint" },
-				typescriptreact = { "eslint" },
-
-				-- 通用
-				markdown = { "markdownlint" },
-				yaml = { "yamllint" },
-				dockerfile = { "hadolint" },
-				sh = { "shellcheck" },
-			}
-
-			-- 设置自动触发
-			local lint_augroup = vim.api.nvim_create_augroup("lint", { clear = true })
-
-			-- 保存后检查
-			vim.api.nvim_create_autocmd({ "BufWritePost" }, {
-				group = lint_augroup,
-				callback = function()
-					lint.try_lint()
-				end,
-			})
-
-			-- 进入缓冲区时检查
-			vim.api.nvim_create_autocmd({ "BufEnter" }, {
-				group = lint_augroup,
-				callback = function()
-					lint.try_lint()
-				end,
-			})
-
-			-- 插入模式离开后检查（可选，可能较频繁）
-			vim.api.nvim_create_autocmd({ "InsertLeave" }, {
-				group = lint_augroup,
-				callback = function()
-					lint.try_lint()
-				end,
-			})
-
-			-- 创建用户命令
-			vim.api.nvim_create_user_command("Lint", function()
-				lint.try_lint()
-			end, { desc = "手动触发代码检查" })
-
-			vim.api.nvim_create_user_command("LintInfo", function()
-				local running_linters = lint.get_running()
-				if #running_linters == 0 then
-					vim.notify("没有正在运行的 linter", vim.log.levels.INFO)
-				else
-					vim.notify("运行中的 linter: " .. table.concat(running_linters, ", "), vim.log.levels.INFO)
-				end
-			end, { desc = "显示运行中的 linter" })
-		end,
-	},
+      vim.api.nvim_create_user_command("Lint", function()
+        lint.try_lint()
+      end, { desc = "手动触发代码检查" })
+    end,
+  },
 }