Update feature roadmap to include a named pipeline profile configuration model

docs/roadmap/2-framework-composition.md

@@ -28,6 +28,8 @@ Out of scope:
 - real input parsing;
 - real input modules;
 - real extract modules;
+- pipeline-profile config loading;
+- module capability validation;
 - real LLM calls;
 - prompt assets;
 - response schema assets;
@@ -50,6 +52,10 @@ The runner should operate on already parsed source documents in this checkpoint.
 Raw input parsing and concrete input module behavior remain deferred to the
 Seriatim input module checkpoint.
 
+Pipeline-profile resolution, module metadata, and capability validation are
+deferred to checkpoint 3. This checkpoint only needs constructor registries and
+minimal runner composition.
+
 Implementation staging belongs in
 [`implementation.md`](implementation.md).