Move LSP config from lazy.on_event to direct execution

init.lua now requires lsp.lua on VimEnter, so the file no longer
needs its own lazy.on_event wrapper. This simplifies the code and
keeps the delay-loading decision in one place.

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

lua/lsp.lua

@@ -43,8 +43,8 @@ lazy.on_event("conform", "BufWritePre", "*", function()
 	end
 end)
 
--- mason + LSP 配置延迟到 VimEnter，避免启动时加载
-lazy.on_event("lsp", "VimEnter", "*", function()
+-- mason + LSP 配置
+-- 由 init.lua 在 VimEnter 时 require，此处直接执行
 vim.cmd.packadd("nvim-lspconfig")
 require("mason").setup()
 
@@ -73,7 +73,6 @@ lazy.on_event("lsp", "VimEnter", "*", function()
 	"dartls",
 	"kotlin_lsp",
 })
-end)
 
 -- 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" })