Add (param :as type) annotations to defcomp params across all services and templates

Annotates ~500 defcomp params across 62 files: market (5), blog (7), cart (5),
events (3), federation (4), account (3), orders (2), shared templates (11),
sx docs (14), plus remaining spec fn params (z3, test-framework, adapter-dom,
adapter-async, engine, eval). Total annotations in codebase: 1043.

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

cart/sx/calendar.sx

@@ -1,6 +1,6 @@
 ;; Cart calendar entry components
 
-(defcomp ~cart-cal-entry (&key name date-str cost)
+(defcomp ~cart-cal-entry (&key (name :as string) (date-str :as string) (cost :as string))
   (li :class "flex items-start justify-between text-sm"
     (div (div :class "font-medium" name)
       (div :class "text-xs text-stone-500" date-str))