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/lsp.lua

@@ -0,0 +1,256 @@
+-- lsp.lua - LSP 核心配置（lazydev + mason + nvim-lspconfig + fidget）
+
+return {
+  -- Lua 开发辅助（替代已废弃的 neodev.nvim）
+  {
+    "folke/lazydev.nvim",
+    ft = "lua",
+    opts = {
+      library = {
+        { path = "luvit-meta/library", words = { "vim%.uv" } },
+        { path = "nvim-dap-ui" },
+      },
+    },
+  },
+  { "Bilal2453/luvit-meta", lazy = true },
+
+  -- LSP 进度提示
+  {
+    "j-hui/fidget.nvim",
+    opts = {
+      notification = { window = { winblend = 0 } },
+    },
+  },
+
+  -- Mason 工具管理器
+  {
+    "williamboman/mason.nvim",
+    build = ":MasonUpdate",
+    opts = {
+      ui = { border = "rounded", icons = { package_installed = "✓", package_pending = "➜", package_uninstalled = "✗" } },
+    },
+  },
+
+  -- mason-lspconfig 桥接
+  {
+    "williamboman/mason-lspconfig.nvim",
+    dependencies = { "williamboman/mason.nvim" },
+    opts = {
+      ensure_installed = {
+        "lua_ls",
+        "gopls",
+        "pyright",
+        "ruff",
+        "ts_ls",
+        "eslint",
+        "jsonls",
+        "yamlls",
+        "bashls",
+      },
+      automatic_installation = true,
+    },
+  },
+
+  -- mason 工具安装器（格式化/lint 工具）
+  {
+    "WhoIsSethDaniel/mason-tool-installer.nvim",
+    dependencies = { "williamboman/mason.nvim" },
+    opts = {
+      ensure_installed = {
+        -- Go
+        "gofumpt", "goimports", "golangci-lint", "delve",
+        -- Rust（通过 rustup 管理，mason 作为备用）
+        "codelldb",
+        -- Python
+        "isort", "debugpy",
+        -- JS/TS
+        "prettierd", "eslint_d",
+        -- 通用
+        "stylua", "shfmt", "shellcheck", "selene",
+      },
+    },
+  },
+
+  -- nvim-lspconfig 主配置
+  {
+    "neovim/nvim-lspconfig",
+    event = { "BufReadPre", "BufNewFile" },
+    dependencies = {
+      "williamboman/mason.nvim",
+      "williamboman/mason-lspconfig.nvim",
+      "saghen/blink.cmp",
+    },
+    opts = {
+      diagnostics = {
+        underline = true,
+        update_in_insert = false,
+        virtual_text = { spacing = 4, source = "if_many", prefix = "●" },
+        severity_sort = true,
+        signs = {
+          text = {
+            [vim.diagnostic.severity.ERROR] = " ",
+            [vim.diagnostic.severity.WARN] = " ",
+            [vim.diagnostic.severity.HINT] = " ",
+            [vim.diagnostic.severity.INFO] = " ",
+          },
+        },
+      },
+      inlay_hints = { enabled = true },
+      -- 各语言服务器配置（Rust 由 rustaceanvim 接管，不在此处配置）
+      servers = {
+        lua_ls = {
+          settings = {
+            Lua = {
+              completion = { callSnippet = "Replace" },
+              workspace = { checkThirdParty = false },
+              telemetry = { enable = false },
+              diagnostics = { globals = { "vim" } },
+            },
+          },
+        },
+        pyright = {
+          settings = {
+            python = {
+              analysis = {
+                typeCheckingMode = "basic",
+                autoSearchPaths = true,
+                useLibraryCodeForTypes = true,
+                diagnosticMode = "workspace",
+              },
+            },
+          },
+        },
+        ruff = {
+          -- ruff 处理 import 排序和快速修复，格式化由 conform 接管
+          on_attach = function(client)
+            client.server_capabilities.documentFormattingProvider = false
+          end,
+        },
+        gopls = {
+          settings = {
+            gopls = {
+              gofumpt = true,
+              codelenses = {
+                gc_details = true, generate = true, run_govulncheck = true,
+                test = true, tidy = true, upgrade_dependency = true,
+              },
+              hints = {
+                assignVariableTypes = true, compositeLiteralFields = true,
+                compositeLiteralTypes = true, constantValues = true,
+                functionTypeParameters = true, parameterNames = true,
+                rangeVariableTypes = true,
+              },
+              analyses = {
+                fieldalignment = true, nilness = true,
+                unusedparams = true, unusedwrite = true, useany = true,
+              },
+              usePlaceholders = true,
+              completeUnimported = true,
+              staticcheck = true,
+              directoryFilters = { "-.git", "-.vscode", "-.idea", "-node_modules" },
+              semanticTokens = true,
+            },
+          },
+        },
+        -- ts_ls 由 typescript-tools.nvim 接管，此处不配置
+        eslint = {},
+        jsonls = {
+          -- 延迟加载 schemastore（插件安装后才可用）
+          on_new_config = function(new_config)
+            new_config.settings = new_config.settings or {}
+            new_config.settings.json = new_config.settings.json or {}
+            new_config.settings.json.schemas = new_config.settings.json.schemas or {}
+            local ok, schemastore = pcall(require, "schemastore")
+            if ok then
+              vim.list_extend(new_config.settings.json.schemas, schemastore.json.schemas())
+            end
+          end,
+          settings = {
+            json = { validate = { enable = true } },
+          },
+        },
+        yamlls = {},
+        bashls = {},
+      },
+    },
+    config = function(_, opts)
+      -- 诊断符号
+      vim.diagnostic.config(vim.deepcopy(opts.diagnostics))
+
+      -- LspAttach 公共键绑定
+      vim.api.nvim_create_autocmd("LspAttach", {
+        callback = function(args)
+          local buf = args.buf
+          local client = vim.lsp.get_client_by_id(args.data.client_id)
+
+          local map = function(mode, lhs, rhs, desc)
+            vim.keymap.set(mode, lhs, rhs, { buffer = buf, silent = true, desc = desc })
+          end
+
+          -- 导航
+          map("n", "gd", function() vim.lsp.buf.definition() end, "转到定义")
+          map("n", "gD", function() vim.lsp.buf.declaration() end, "转到声明")
+          map("n", "gr", function() vim.lsp.buf.references() end, "查找引用")
+          map("n", "gI", function() vim.lsp.buf.implementation() end, "转到实现")
+          map("n", "gt", function() vim.lsp.buf.type_definition() end, "转到类型定义")
+          map("n", "K", function() vim.lsp.buf.hover() end, "悬浮文档")
+          map("n", "gK", function() vim.lsp.buf.signature_help() end, "签名帮助")
+          map("i", "<C-k>", function() vim.lsp.buf.signature_help() end, "签名帮助")
+
+          -- 操作
+          map({ "n", "v" }, "<leader>ca", function() vim.lsp.buf.code_action() end, "代码操作")
+          map("n", "<leader>cr", function()
+            -- inc-rename 若已加载则使用增量重命名，否则回退到标准 LSP rename
+            local ok, inc = pcall(require, "inc_rename")
+            if ok then
+              return ":" .. inc.rename.cmd .. " " .. vim.fn.expand("<cword>")
+            end
+            vim.lsp.buf.rename()
+          end, "重命名")
+          map("n", "<leader>cl", "<cmd>LspInfo<cr>", "LSP 信息")
+
+          -- 诊断
+          map("n", "]d", function() vim.diagnostic.goto_next() end, "下一个诊断")
+          map("n", "[d", function() vim.diagnostic.goto_prev() end, "上一个诊断")
+          map("n", "<leader>cd", function() vim.diagnostic.open_float() end, "行诊断")
+
+          -- Inlay hints 切换
+          if client and client.supports_method("textDocument/inlayHint") then
+            map("n", "<leader>uh", function()
+              vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled({ bufnr = buf }), { bufnr = buf })
+            end, "切换 Inlay Hints")
+          end
+        end,
+      })
+
+      -- 构建 capabilities（blink.cmp 提供）
+      local capabilities = require("blink.cmp").get_lsp_capabilities()
+
+      -- 通过 mason-lspconfig 自动启动服务器
+      require("mason-lspconfig").setup_handlers({
+        function(server)
+          local server_opts = vim.tbl_deep_extend("force", {
+            capabilities = vim.deepcopy(capabilities),
+          }, opts.servers[server] or {})
+
+          -- Rust 由 rustaceanvim 接管，跳过
+          if server == "rust_analyzer" then return end
+          -- TypeScript 由 typescript-tools.nvim 接管，跳过
+          if server == "ts_ls" or server == "tsserver" then return end
+
+          require("lspconfig")[server].setup(server_opts)
+        end,
+      })
+    end,
+  },
+
+  -- JSON Schema Store（可选，供 jsonls 使用）
+  { "b0o/SchemaStore.nvim", lazy = true },
+
+  -- 增量重命名（在命令行实时预览）
+  {
+    "smjonas/inc-rename.nvim",
+    cmd = "IncRename",
+    opts = {},
+  },
+}