Add test runner dashboard service (test.rose-ash.com)

Public Quart microservice that runs pytest against shared/tests/ and
shared/sexp/tests/, serving an HTMX-powered sexp-rendered dashboard
with pass/fail/running status, auto-refresh polling, and re-run button.
No database — results stored in memory.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

test/services/__init__.py

@@ -0,0 +1,6 @@
+"""Test app service registration."""
+from __future__ import annotations
+
+
+def register_domain_services() -> None:
+    """Register services for the test app (none needed)."""