prolog: Hyperscript bridge (+19)

pl-hs-query, pl-hs-predicate/1,2,3, pl-hs-install in hs-bridge.sx.
No parser/compiler changes: Hyperscript already compiles
`when allowed(user, action)` to (allowed user action).
Total 590/590.

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

lib/prolog/conformance.sh

@@ -44,6 +44,7 @@ SUITES=(
   "compiler:lib/prolog/tests/compiler.sx:pl-compiler-tests-run!"
   "cross_validate:lib/prolog/tests/cross_validate.sx:pl-cross-validate-tests-run!"
   "integration:lib/prolog/tests/integration.sx:pl-integration-tests-run!"
+  "hs_bridge:lib/prolog/tests/hs_bridge.sx:pl-hs-bridge-tests-run!"
 )
 
 SCRIPT='(epoch 1)
@@ -51,7 +52,8 @@ SCRIPT='(epoch 1)
 (load "lib/prolog/parser.sx")
 (load "lib/prolog/runtime.sx")
 (load "lib/prolog/query.sx")
-(load "lib/prolog/compiler.sx")'
+(load "lib/prolog/compiler.sx")
+(load "lib/prolog/hs-bridge.sx")'
 for entry in "${SUITES[@]}"; do
   IFS=: read -r _ file _ <<< "$entry"
   SCRIPT+=$'\n(load "'"$file"$'")'