Auto-compile: lambdas → bytecode VM at load time

After loading .sx files, (vm-compile) iterates all named lambdas,
compiles each body to bytecode, replaces with NativeFn VM wrapper.

Results: 3/109 functions compiled (compiler needs more features).
CEK steps: 49911 → 38083 (23% fewer) for home page.

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

shared/sx/ocaml_bridge.py

@@ -215,9 +215,9 @@ class OcamlBridge:
             # Collect files to load
             all_files: list[str] = []
 
-            # Spec files needed by aser
+            # Spec files needed by aser + bytecode compiler
             spec_dir = os.path.join(os.path.dirname(__file__), "../../spec")
-            for spec_file in ["parser.sx", "render.sx"]:
+            for spec_file in ["parser.sx", "render.sx", "bytecode.sx", "compiler.sx"]:
                 path = os.path.normpath(os.path.join(spec_dir, spec_file))
                 if os.path.isfile(path):
                     all_files.append(path)
@@ -264,6 +264,13 @@ class OcamlBridge:
                                         filepath, e)
             _logger.info("Loaded %d definitions from .sx files into OCaml kernel (%d skipped)",
                          count, skipped)
+
+            # Auto-compile all lambdas to bytecode VM
+            try:
+                await self._send('(vm-compile)')
+                await self._read_until_ok(ctx=None)
+            except OcamlBridgeError as e:
+                _logger.warning("VM 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