Transpile dom.sx + browser.sx into bundle; add FFI variable aliases

dom-lib and browser-lib were listed in ADAPTER_FILES but never actually
transpiled — their functions only existed as native PLATFORM_*_JS code.
Add them to the build loop so the FFI library wrappers are compiled.
Add hostCall/hostGet/etc. variable aliases for transpiled code, and
console-log to browser.sx for runtime-eval'd SX code.

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

hosts/javascript/bootstrap.py

@@ -137,7 +137,7 @@ def compile_ref_to_js(
         ("content.sx", "content (content-addressed computation)"),
         ("render.sx", "render (core)"),
     ]
-    for name in ("parser", "html", "sx", "dom", "engine", "orchestration", "boot"):
+    for name in ("parser", "html", "sx", "dom-lib", "browser-lib", "dom", "engine", "orchestration", "boot"):
         if name in adapter_set:
             sx_files.append(ADAPTER_FILES[name])
     # Use explicit ordering for spec modules (respects dependencies)