nvim-config/lua/plugins/lsp.lua

-- =============================================================================
-- lsp.lua — LSP 语言服务器
-- =============================================================================
-- 【保留】你的完整 LSP 配置（lua_ls/bashls/clangd/neocmake/rust_analyzer）。
-- 【修改】🔧 on_attach 改为引用 config.keymaps 的 lsp_on_attach（统一管理键位）；
--         🔧 diagnostic 配补 sign 图标和 float 边框。

return {
  -- Mason: 外部工具管理
  {
    "williamboman/mason.nvim",
    cmd = "Mason",
    opts = {
      ui = {
        border = "rounded",  -- ✅ 新增：圆角边框
        icons = {
          package_installed   = "✓",
          package_pending     = "➜",
          package_uninstalled = "✗",
        },
      },
    },
  },

  -- Mason 与 LSP 桥接
  {
    "williamboman/mason-lspconfig.nvim",
    dependencies = { "williamboman/mason.nvim" },
    opts = {
      ensure_installed = {
        "lua_ls",
        "bashls",
        "clangd",
        "neocmake",
      },
      automatic_installation = function(server_name)
        -- 🔧 保留你的逻辑：rust_analyzer 由 rustup 管理
        return server_name ~= "rust_analyzer"
      end,
    },
  },

  -- LSP 配置
  {
    "neovim/nvim-lspconfig",
    event = { "BufReadPre", "BufNewFile" },
    dependencies = {
      "williamboman/mason.nvim",
      "williamboman/mason-lspconfig.nvim",
      "saghen/blink.cmp",
    },
    config = function()
      local caps = require("blink.cmp").get_lsp_capabilities()
      local keymaps = require("config.keymaps")

      -- ✅ 新增：诊断图标和样式
      vim.diagnostic.config({
        virtual_text = {
          prefix = "●",
          spacing = 4,
        },
        signs = true,
        update_in_insert = false,
        severity_sort = true,
        float = {
          border = "rounded",
          source = "always",
        },
      })

      local signs = { Error = " ", Warn = " ", Hint = "󰠠 ", Info = " " }
      for type, icon in pairs(signs) do
        local hl = "DiagnosticSign" .. type
        vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = "" })
      end

      -- LSP 附加时绑定键位
      vim.api.nvim_create_autocmd("LspAttach", {
        callback = function(args)
          -- 🔧 修改：使用统一 on_attach
          keymaps.lsp_on_attach(nil, args.buf)

          -- 保留你的 inlay hints 开启
          vim.lsp.inlay_hint.enable(true, { bufnr = args.buf })
        end,
      })

      -- Lua
      vim.lsp.config['lua_ls'] = {
        cmd = { 'lua-language-server' },
        filetypes = { 'lua' },
        root_markers = { '.luarc.json', '.luarc.jsonc', '.git', 'init.lua' },
        capabilities = caps,
        settings = {
          Lua = {
            runtime = { version = "LuaJIT" },
            workspace = { checkThirdParty = false },
            diagnostics = { globals = { "vim" } },
          },
        },
      }

      -- Bash
      vim.lsp.config['bashls'] = {
        cmd = { 'bash-language-server', 'start' },
        filetypes = { 'sh', 'bash' },
        root_markers = { '.git' },
        capabilities = caps,
      }

      -- C/C++ (clangd)
      vim.lsp.config['clangd'] = {
        cmd = { 'clangd' },
        filetypes = { 'c', 'cpp', 'objc', 'objcpp' },
        root_markers = { '.clangd', 'compile_commands.json', '.git' },
        capabilities = caps,
      }

      -- CMake
      vim.lsp.config['neocmake'] = {
        cmd = { 'neocmakelsp', 'stdio' },
        filetypes = { 'cmake' },
        root_markers = { 'CMakeLists.txt', '.git' },
        capabilities = caps,
        init_options = {
          format = { enable = true },
          lint = { enable = true },
        },
      }

      -- Rust (rust-analyzer)
      vim.lsp.config['rust_analyzer'] = {
        cmd = { 'rust-analyzer' },
        filetypes = { 'rust' },
        root_markers = { 'Cargo.toml', '.git' },
        capabilities = caps,
        settings = {
          ["rust-analyzer"] = {
            cargo = {
              allFeatures = true,
              loadOutDirsFromCheck = true,
              buildScripts = { enable = true },
            },
            checkOnSave = true,
            diagnostics = { enable = true },
            procMacro = { enable = true },
            files = {
              exclude = {
                ".direnv", ".git", ".jj", ".github", ".gitlab",
                "bin", "node_modules", "target", "venv", ".venv",
              },
              watcher = "client",
            },
          },
        },
      }

      vim.lsp.enable({ 'lua_ls', 'bashls', 'clangd', 'neocmake', 'rust_analyzer' })
    end,
  },
}