Construct universal modules with decoded options

docs/internal/llm.md

@@ -33,10 +33,16 @@ without exposing Scriptorium types through stage contracts.
 2. creating a `ScriptoriumClient` from the effective profile source;
 3. attaching an `LLMProfileRecorder`;
 4. creating a scheduler from the effective concurrency limit;
-5. returning a `ScheduledClient` wrapper; and
-6. injecting that one shared client into complete pipeline preparation before
+5. returning a `ScheduledClient` wrapper;
+6. decorating that shared client before preparation when debug recording is
+   enabled; and
+7. injecting that one shared client into complete pipeline preparation before
    the source file is read or the runner is invoked.
 
+The D&D scene chunker retains this injected client and uses it for every scene
+completion. Later legacy LLM-backed operations still receive the same shared
+client through their operation requests.
+
 The CLI separately gathers explicit profile IDs from resolved LLM-capable stage
 and validator bindings. It prepares a small internal check prompt for each ID so
 missing or invalid profiles fail before pipeline execution. The runtime profile