VM adapter: compile works, env isolation needed

adapter-sx.sx compiles to 25 code objects (4044 bytes bytecode).
vm-load-module loads it. But replacing Lambda values in env.bindings
with NativeFn wrappers breaks the CEK machine for non-aser functions.

Root cause: shared env.bindings between CEK and VM. The CEK needs
Lambda values (for closure merging). The VM needs NativeFn wrappers.
Both can't coexist in the same env.

Fix needed: VM adapter gets its own globals table (with compiled
closures). The aser-slot command routes directly to the VM with
its own globals, not through the CEK with shared env.

Disabled vm-load-module. Pages render correctly via CEK.

Also: OP_CALL_PRIM now logs primitive name + argc in error messages
for easier debugging.

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

shared/sx/ocaml_bridge.py

@@ -333,13 +333,16 @@ class OcamlBridge:
             _logger.info("Loaded %d definitions from .sx files into OCaml kernel (%d skipped)",
                          count, skipped)
 
-            # Compile adapter-sx.sx to bytecode and load as VM module.
-            # All aser functions become NativeFn VM closures in the
-            # kernel env. The CEK calls them as NativeFn → VM executes.
-            try:
-                await self._compile_adapter_module()
-            except Exception as e:
-                _logger.warning("VM adapter compilation skipped: %s", e)
+            # VM adapter compilation: compile adapter-sx.sx to bytecode,
+            # load as VM module so aser runs compiled.
+            # DISABLED: vm-load-module replaces env bindings with NativeFn
+            # wrappers that break when the CEK machine calls other env
+            # functions during page eval. Need to isolate VM execution
+            # from CEK env to avoid cross-contamination.
+            # try:
+            #     await self._compile_adapter_module()
+            # except Exception as e:
+            #     _logger.warning("VM adapter compilation skipped: %s", e)
         except Exception as e:
             _logger.error("Failed to load .sx files into OCaml kernel: %s", e)
             self._components_loaded = False  # retry next time