docs(sandbox): stop referencing a non-existent game.log API

guides/security-sandbox.md

@@ -16,8 +16,9 @@ script cannot reach them:
 - **Package machinery:** the entire `package` library, plus the default
   `require`
 - **Unstructured logging:** `print`, `eprint` — Luerl's defaults bypass
-  the structured logger and write straight to BEAM stdout. Scripts that
-  need to log should go through the asobi-side `game.log` API.
+  the structured logger and write straight to BEAM stdout. There is
+  currently no in-script logging API; surface diagnostics through game
+  state or broadcast events instead.
 
 `os.clock`, `os.date`, `os.difftime`, and `os.time` remain available so
 games can timestamp.

src/lua/asobi_lua_loader.erl

@@ -219,8 +219,9 @@ strip_dangerous_globals(St) ->
     %% L-1: `print` and `eprint` are stripped here because Luerl's
     %% defaults call `io:format` directly to the BEAM stdout, which
     %% breaks the structured JSON log stream and lets a tight loop
-    %% flood the runtime's logging driver. Scripts that need to log
-    %% should go through the asobi-side `game.log` API.
+    %% flood the runtime's logging driver. There is currently no
+    %% in-script logging API; scripts surface diagnostics through game
+    %% state or broadcast events.
     Paths = [
         [~"os", ~"execute"],
         [~"os", ~"exit"],