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>

dev.sh

@@ -20,8 +20,8 @@ case "${1:-up}" in
     shift
     $COMPOSE logs -f "$@"
     ;;
-  test)
-    # One-shot: all unit tests
+  test-run)
+    # One-shot: all unit tests (headless, no dashboard)
     $COMPOSE run --rm test-unit python -m pytest \
       shared/ artdag/core/tests/ artdag/core/artdag/sexp/ \
       artdag/l1/tests/ artdag/l1/sexp_effects/ \