SX renderer: adapter-html.sx as sole renderer, conditions, pattern matching

Evaluator: conditions/restarts, pattern matching, render-trace support.
adapter-html.sx: full SX-defined HTML renderer replacing native OCaml.
spec/render.sx: updated render mode helpers.
sx_browser.ml: use SX render-to-html instead of native.
sx_ref.ml: evaluator updates for conditions + match.
Bootstrap + transpiler updates for new forms.

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

hosts/ocaml/transpiler.sx

@@ -202,7 +202,7 @@
         "notify-subscribers" "flush-subscribers" "dispose-computed"
         "continuation?" "continuation-data" "make-cek-continuation"
         "dynamic-wind-call" "strip-prefix"
-        "component-set-param-types!" "parse-comp-params" "parse-macro-params"
+        "component-set-param-types!" "component-file" "component-set-file!" "parse-comp-params" "parse-macro-params"
         "parse-keyword-args"))
 
 (define ml-is-known-name?