Defer heavy modules and disable built-in plugins to reduce startup time

- Disable unused built-in plugins at top of init.lua

- Defer treesitter and lsp to VimEnter

- Use packadd for on-demand plugin loading (conform, lspconfig, fugitive)

- Defer clipboard initialization to avoid provider check blocking

- Wrap LSP/diagnostic keymaps in functions to defer module loading

- Defer mini.icons setup to VimEnter

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

init.lua

@@ -1,5 +1,35 @@
 _G.nvim_start_time = (vim.uv or vim.loop).hrtime()
 
+-- 禁用不需要的内置插件，减少启动时 source 的 plugin 文件
+vim.g.loaded_2html_plugin = 1
+vim.g.loaded_getscript = 1
+vim.g.loaded_getscriptPlugin = 1
+vim.g.loaded_gzip = 1
+vim.g.loaded_logipat = 1
+vim.g.loaded_matchit = 1
+vim.g.loaded_matchparen = 1
+vim.g.loaded_netrw = 1
+vim.g.loaded_netrwFileHandlers = 1
+vim.g.loaded_netrwPlugin = 1
+vim.g.loaded_netrwSettings = 1
+vim.g.loaded_rrhelper = 1
+vim.g.loaded_spellfile_plugin = 1
+vim.g.loaded_tar = 1
+vim.g.loaded_tarPlugin = 1
+vim.g.loaded_tutor_mode_plugin = 1
+vim.g.loaded_vimball = 1
+vim.g.loaded_vimballPlugin = 1
+vim.g.loaded_zip = 1
+vim.g.loaded_zipPlugin = 1
+vim.g.loaded_rplugin = 1
+vim.g.loaded_tohtml = 1
+vim.g.loaded_syntax = 1
+vim.g.loaded_synmenu = 1
+vim.g.loaded_optwin = 1
+vim.g.loaded_compiler = 1
+vim.g.loaded_bugreport = 1
+vim.g.loaded_ftplugin = 1
+
 require("vim._core.ui2").enable({})
 
 require("options")
@@ -7,8 +37,15 @@ require("keymaps")
 require("autocmds")
 require("usercmds")
 require("pack")
-require("treesitter")
-require("lsp")
 
 vim.g.moonflyTransparent = true
 vim.cmd("colorscheme catppuccin-mocha")
+
+-- 延迟加载 heavy 模块，避免阻塞启动
+vim.api.nvim_create_autocmd("VimEnter", {
+	once = true,
+	callback = function()
+		require("treesitter")
+		require("lsp")
+	end,
+})

lua/lsp.lua

@@ -2,6 +2,7 @@ local lazy = require("lazy")
 
 -- conform.nvim - BufWritePre 懒加载
 local function setup_conform()
+	vim.cmd.packadd("conform.nvim")
 	local function biome_or_prettier()
 		if vim.fs.find({ "biome.json", "biome.jsonc" }, { upward = true, stop = vim.uv.os_homedir() })[1] then
 			return { "biome-check", "biome", stop_after_first = true }
@@ -44,6 +45,7 @@ end)
 
 -- mason + LSP 配置延迟到 VimEnter，避免启动时加载
 lazy.on_event("lsp", "VimEnter", "*", function()
+	vim.cmd.packadd("nvim-lspconfig")
 	require("mason").setup()
 
 	local capabilities = vim.lsp.protocol.make_client_capabilities()
@@ -73,15 +75,15 @@ lazy.on_event("lsp", "VimEnter", "*", function()
 	})
 end)
 
--- LSP keymaps
-vim.keymap.set("n", "gd", vim.lsp.buf.definition, { desc = "Go to definition" })
-vim.keymap.set("n", "gh", vim.lsp.buf.hover, { desc = "Hover" })
+-- LSP keymaps（用 function 包装延迟 vim.lsp/vim.diagnostic 模块加载）
+vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, { desc = "Go to definition" })
+vim.keymap.set("n", "gh", function() vim.lsp.buf.hover() end, { desc = "Hover" })
 vim.keymap.set("n", "<leader>fm", function()
 	lazy.load("conform", setup_conform)
 	require("conform").format({ lsp_fallback = true })
 end, { desc = "Format buffer" })
-vim.keymap.set("n", "df", vim.diagnostic.open_float, { desc = "Show line diagnostics" })
-vim.keymap.set("n", "<leader>ca", vim.lsp.buf.code_action, { desc = "Code action" })
+vim.keymap.set("n", "df", function() vim.diagnostic.open_float() end, { desc = "Show line diagnostics" })
+vim.keymap.set("n", "<leader>ca", function() vim.lsp.buf.code_action() end, { desc = "Code action" })
 
 local diagnostic_goto = function(next, severity)
 	return function()
@@ -100,4 +102,9 @@ vim.keymap.set("n", "[e", diagnostic_goto(false, "ERROR"), { desc = "Prev Error"
 vim.keymap.set("n", "]w", diagnostic_goto(true, "WARN"), { desc = "Next Warning" })
 vim.keymap.set("n", "[w", diagnostic_goto(false, "WARN"), { desc = "Prev Warning" })
 
-vim.diagnostic.config({ virtual_text = true })
+vim.api.nvim_create_autocmd("VimEnter", {
+	once = true,
+	callback = function()
+		vim.diagnostic.config({ virtual_text = true })
+	end,
+})

lua/options.lua

@@ -28,7 +28,10 @@ vim.opt.undofile = true
 
 vim.opt.completeopt = "menuone,noselect,fuzzy,nosort"
 vim.opt.shortmess:append("c")
-vim.opt.clipboard:append("unnamedplus")
+-- 延迟初始化 clipboard，避免启动时 provider 检测阻塞（SSH 环境尤其明显）
+vim.schedule(function()
+	vim.opt.clipboard:append("unnamedplus")
+end)
 vim.opt.isfname:append("@-@")
 vim.opt.scrolloff = 8
 

lua/pack.lua

@@ -8,7 +8,7 @@ vim.pack.add({
 	"https://github.com/mason-org/mason.nvim",
 	"https://github.com/stevearc/conform.nvim",
 	"https://github.com/tpope/vim-fugitive",
-})
+}, { load = false })
 
 -- mini.starter 启动页
 local starter = require("mini.starter")
@@ -90,10 +90,14 @@ end, function()
 	MiniFiles.reveal_cwd()
 end, { desc = "Toggle into currently opened file" })
 
--- mini.icons - 启动时加载
-lazy.load("icons", function()
-	require("mini.icons").setup()
-end)
+-- mini.icons - 首次需要时加载（VimEnter 后延迟）
+vim.api.nvim_create_autocmd("VimEnter", {
+	once = true,
+	callback = function()
+		require("mini.icons").setup()
+		lazy._loaded["icons"] = true
+	end,
+})
 
 -- mini.notify - 首次 vim.notify 调用时加载
 vim.notify = function(msg, level, opts)
@@ -140,7 +144,7 @@ lazy.on_keys("pick", "<leader>fw", "n", load_pick, function()
 	require("mini.pick").builtin.grep_live()
 end, { desc = "Live grep in project" })
 
-vim.keymap.set("n", "<leader>ds", vim.diagnostic.setloclist, { desc = "LSP diagnostic loclist" })
+vim.keymap.set("n", "<leader>ds", function() vim.diagnostic.setloclist() end, { desc = "LSP diagnostic loclist" })
 
 lazy.on_keys("pick", "<leader>sk", "n", load_pick, function()
 	require("mini.extra").pickers.keymaps()
@@ -312,11 +316,15 @@ vim.keymap.set("n", "<leader>gD", function()
 end, { desc = "Git file history" })
 
 -- vim-fugitive - 按键触发
-lazy.on_keys("fugitive", "<leader>gg", "n", nil, function()
+local function load_fugitive()
+	vim.cmd.packadd("vim-fugitive")
+end
+
+lazy.on_keys("fugitive", "<leader>gg", "n", load_fugitive, function()
 	vim.cmd("tabnew | Git | only")
 end, { desc = "Fugitive Full Page New Tab" })
 
-lazy.on_keys("fugitive", "<leader>gd", "n", nil, function()
+lazy.on_keys("fugitive", "<leader>gd", "n", load_fugitive, function()
 	vim.cmd("Gvdiffsplit")
 end, { desc = "Git diff split" })
 

lua/treesitter.lua

@@ -1,5 +1,3 @@
-local treesitter = require("nvim-treesitter")
-
 local ensure_installed = {
     "lua",
     "vim",
@@ -26,27 +24,35 @@ local ensure_installed = {
     "make",
 }
 
--- 延迟安装 parser，避免启动时阻塞
-vim.defer_fn(function()
-    treesitter.install(ensure_installed)
-end, 100)
+vim.api.nvim_create_autocmd("VimEnter", {
+    once = true,
+    callback = function()
+        vim.cmd.packadd("nvim-treesitter")
+        local treesitter = require("nvim-treesitter")
 
-vim.api.nvim_create_autocmd("FileType", {
-    pattern = "*",
-    callback = function(args)
-        local buf = args.buf
-        local ft = vim.bo[buf].filetype
+        -- 延迟安装 parser，避免阻塞
+        vim.defer_fn(function()
+            treesitter.install(ensure_installed)
+        end, 100)
 
-        local lang = vim.treesitter.language.get_lang(ft)
-        if not lang then
-            return
-        end
+        vim.api.nvim_create_autocmd("FileType", {
+            pattern = "*",
+            callback = function(args)
+                local buf = args.buf
+                local ft = vim.bo[buf].filetype
 
-        local ok_add = pcall(vim.treesitter.language.add, lang)
-        if not ok_add then
-            return
-        end
+                local lang = vim.treesitter.language.get_lang(ft)
+                if not lang then
+                    return
+                end
 
-        pcall(vim.treesitter.start, buf, lang)
+                local ok_add = pcall(vim.treesitter.language.add, lang)
+                if not ok_add then
+                    return
+                end
+
+                pcall(vim.treesitter.start, buf, lang)
+            end,
+        })
     end,
 })