test(lsp): add hemplate highlighting fixture

Add repo-owned hemplate highlighting fixture and golden capture contract without editor packaging or a second parser.

req: diagnostics/004

req: diagnostics/008

docs/editor-support.md

@@ -87,7 +87,9 @@ expression parsing, selector behavior, generated Rust facts, or build
 validation. Those remain with `hemx-build`, `hemx-lsp`, normal HTML tooling, and
 Rust tooling. Repo tests for highlighting should therefore be fixture/query tests
 for captures over these token classes; provider packaging or visual editor smoke
-is a separate release slice and cannot become syntax authority. req: diagnostics/004 req: diagnostics/008
+is a separate release slice and cannot become syntax authority. The current
+repo-owned fixture and golden capture contract live in
+`docs/fixtures/hemplate-highlighting/`. req: diagnostics/004 req: diagnostics/008
 
 ## VS Code and Cursor
 

docs/fixtures/hemplate-highlighting/captures.tsv

@@ -0,0 +1,17 @@
+capture	literal
+@attribute.hemx	data-hemx-root
+@attribute.hemx	data-hemx-form
+@attribute.hemx	data-hemx-handle
+@attribute.hemx	data-hemx-slot
+@attribute.dynamic.hemplate	+class
+@keyword.control.hemplate	h-if
+@keyword.control.hemplate	h-for
+@keyword.control.hemplate	h-key
+@keyword.control.hemplate	h-match
+@keyword.control.hemplate	h-case
+@punctuation.special.hemplate.escaped.open	{+
+@punctuation.special.hemplate.escaped.close	+}
+@punctuation.special.hemplate.trusted.open	{+=
+@punctuation.special.hemplate.trusted.close	=+}
+@embedded.rust.hemplate	result.title
+@embedded.rust.hemplate	result.summary_html

docs/fixtures/hemplate-highlighting/hemplate.heml

@@ -0,0 +1,18 @@
+<main data-hemx-root="demo">
+  <form data-hemx-form="search" data-hemx-handle="run_search">
+    <input +class="self.search_class" name="query" />
+  </form>
+
+  <section h-if="self.show_results">
+    <template h-for="result in &self.results" h-key="result.id">
+      <article data-hemx-slot="result_row">
+        <h2>{+ result.title +}</h2>
+        <div>{+= result.summary_html =+}</div>
+      </article>
+    </template>
+  </section>
+
+  <template h-match="self.state">
+    <p h-case="ViewState::Empty">No results</p>
+  </template>
+</main>