HS parser: fix number+comparison keyword collision, eval-hs uses hs-compile

Parser: skip unit suffix when next ident is a comparison keyword
(starts, ends, contains, matches, is, does, in, precedes, follows).
Fixes "123 starts with '12'" returning "123starts" instead of true.

eval-hs: use hs-compile directly instead of hs-to-sx-from-source with
"return " prefix, which was causing the parser to consume the comparison
as a string suffix.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

sx/sx/specs-explorer/spec-ring-runtime.sx

@@ -0,0 +1,20 @@
+(defcomp
+  (&key tests test-count)
+  (div
+    (~tw :tokens "mt-2")
+    (div
+      (~tw :tokens "flex items-center gap-1")
+      (span (~tw :tokens "text-xs font-medium text-stone-500") "Tests")
+      (span
+        (~tw :tokens "text-xs px-1.5 py-0.5 rounded bg-violet-100 text-violet-700")
+        (str test-count)))
+    (ul
+      (~tw :tokens "mt-1 text-xs text-stone-500 list-none")
+      (map
+        (fn
+          (t)
+          (li
+            (~tw :tokens "flex items-center gap-1")
+            (span (~tw :tokens "text-green-500 text-xs") "●")
+            (get t "name")))
+        tests))))