chore: establish learning module baseline

OpenMAIC/packages/@openmaic/generation/templates/pbl-actions/user.md

@@ -0,0 +1,16 @@
+## PBL Scene Information
+
+**Title**: {{title}}
+**Project Topic**: {{projectTopic}}
+**Project Description**: {{projectDescription}}
+**Key Points**: {{keyPoints}}
+**Description**: {{description}}
+{{courseContext}}
+{{agents}}
+
+**Language Directive**: {{languageDirective}}
+
+Please generate the speech content for this PBL scene.
+
+Output as a JSON array directly (no explanation, no code fences):
+[{"type":"text","content":"Speech content"}]