hs: query targets, prolog hook, loop scripts, new plans, WASM regen

Hyperscript compiler/runtime:
- query target support in set/fire/put commands
- hs-set-prolog-hook! / hs-prolog-hook / hs-prolog in runtime
- runtime log-capture cleanup

Scripts: sx-loops-up/down, sx-hs-e-up/down, sx-primitives-down
Plans: datalog, elixir, elm, go, koka, minikanren, ocaml, hs-bucket-f,
       designs (breakpoint, null-safety, step-limit, tell, cookies, eval,
       plugin-system)
lib/prolog/hs-bridge.sx: initial hook-based bridge draft
lib/common-lisp/tests/runtime.sx: CL runtime tests

WASM: regenerate sx_browser.bc.js from updated hs sources

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

lib/prolog/hs-bridge.sx

@@ -0,0 +1,21 @@
+;; lib/prolog/hs-bridge.sx — Prolog ↔ _hyperscript bridge
+;;
+;; Installs the prolog hook into the hyperscript runtime so that
+;; hyperscript scripts can call:
+;;
+;;   prolog(db, "goal(args)")   → true  (at least one solution)
+;;                              → false (no solution)
+;;
+;; Usage:
+;;   (pl-install-hs-hook!)   ;; call once at startup, after loading both libs
+;;
+;; Depends on:
+;;   lib/hyperscript/runtime.sx  — provides hs-set-prolog-hook!
+;;   lib/prolog/runtime.sx       — provides pl-query-one (Phase 3+)
+
+(define
+  pl-install-hs-hook!
+  (fn
+    ()
+    (hs-set-prolog-hook!
+      (fn (db goal) (not (= nil (pl-query-one db goal)))))))