Step 17: streaming render — hyperscript enhancements, WASM builds, live server tests

Streaming chunked transfer with shell-first suspense and resolve scripts.
Hyperscript parser/compiler/runtime expanded for conformance. WASM static
assets added to OCaml host. Playwright streaming and page-level test suites.

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

lib/hyperscript/tokenizer.sx

@@ -161,7 +161,12 @@
     "split"
     "joined"
     "descending"
-    "ascending"))
+    "ascending"
+    "scroll"
+    "select"
+    "reset"
+    "default"
+    "halt"))
 
 (define hs-keyword? (fn (word) (some (fn (k) (= k word)) hs-keywords)))