fix: resolve lazy.nvim lock crash and erb treesitter crash

Move lazy.nvim's own install outside the lazy plugin root so it's
treated as local and skipped during git-based lock file writes -
installing it as a tarball left it without a .git dir, which crashed
lazy's lock.update() on every sync (assert on Git.info of a non-git
dir).

Also patch nvim-treesitter's set-lang-from-mimetype! directive, which
crashes on any <script type="..."> tag because it reads match[id] as
a single node when Neovim core now always returns an array there.
Hooked on LazyDone so it overrides nvim-treesitter's own registration
instead of being clobbered by it. Added ruby/html/embedded_template
to ensure_installed so TSUpdate actually keeps those parsers current
instead of relying on one-time auto_install.

.chezmoiexternal.toml.tmpl

@@ -1,6 +1,6 @@
 # chezmoi:template:left-delimiter=#{{
 #{{- /* vim: set filetype=toml: */ -}}
-[".local/share/nvim/lazy/lazy.nvim"]
+[".local/share/nvim/lazy.nvim"]
     type = "archive"
     url = "https://github.com/folke/lazy.nvim/archive/refs/tags/v11.17.5.tar.gz"
     exact = true

dot_config/nvim/init.lua

@@ -1,5 +1,5 @@
 require("core.config")
-vim.opt.runtimepath:prepend(vim.fn.stdpath("data") .. "/lazy/lazy.nvim")
+vim.opt.runtimepath:prepend(vim.fn.stdpath("data") .. "/lazy.nvim")
 require("lazy").setup({
     spec = {
         { import = "plugins" },

dot_config/nvim/lua/plugins/treesitter.lua

@@ -14,11 +14,55 @@ function M.treesitter_configs()
   require("nvim-treesitter.configs").setup(M.treesitter_config_setup)
 end
 
+-- Works around a crash in nvim-treesitter's bundled `set-lang-from-mimetype!`
+-- directive (queries/html_tags/injections.scm, used by html/erb/vue/svelte):
+-- it reads `match[capture_id]` as a single TSNode, but current Neovim core
+-- always returns an array of nodes there, so `<script type="...">` tags
+-- crash the whole buffer's treesitter parse. Re-register the directive with
+-- the same behavior, reading the first node out of the array instead.
+--
+-- Must run after nvim-treesitter's own `plugin/query_predicates.lua` has
+-- registered its (broken) version, or that clobbers this one right back.
+-- `LazyDone` fires once after all plugins (incl. nvim-treesitter's own
+-- plugin/ scripts) have finished loading, so it's the reliable hook.
+vim.api.nvim_create_autocmd("User", {
+  pattern = "LazyDone",
+  once = true,
+  callback = function()
+    M.patch_mimetype_directive()
+  end,
+})
+function M.patch_mimetype_directive()
+  local html_script_type_languages = {
+    ["importmap"] = "json",
+    ["module"] = "javascript",
+    ["application/ecmascript"] = "javascript",
+    ["text/ecmascript"] = "javascript",
+  }
+
+  vim.treesitter.query.add_directive("set-lang-from-mimetype!", function(match, _, bufnr, pred, metadata)
+    local nodes = match[pred[2]]
+    local node = nodes and nodes[1]
+    if not node then
+      return
+    end
+    local type_attr_value = vim.treesitter.get_node_text(node, bufnr)
+    local configured = html_script_type_languages[type_attr_value]
+    if configured then
+      metadata["injection.language"] = configured
+    else
+      local parts = vim.split(type_attr_value, "/", {})
+      metadata["injection.language"] = parts[#parts]
+    end
+  end, { force = true })
+end
+
 M.treesitter_config_setup = {
   -- Add languages to be installed here that you want installed for treesitter
   ensure_installed = {
     "bash", "c", "cpp", "go", "lua", "python", "rust",
     "tsx", "javascript", "typescript", "vimdoc", "vim",
+    "ruby", "html", "embedded_template",
   },
 
   auto_install = true,