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/nav-tools.sx

@@ -1,6 +1,6 @@
 ;; Navigation items for the Tools section
 
-(define tools-nav-items
+(define
   (list
     (dict :label "SX Tools" :href "/sx/(tools.(sx-tools))")
     (dict :label "Services" :href "/sx/(tools.(services))")