Refactor bounds.yml to use multiple user messages

prompts/bounds.user.md

@@ -10,7 +10,4 @@ Remember:
 - Return only valid JSON using the required schema.
 - Do not skip the opening recap, planning, recovery, shopping, travel preparation, or rules adjudication merely because it is less dramatic than later combat. If it occurs after gameplay has begun and affects the session’s state, it belongs inside the range.
 
-Transcript:
-<<<CURRENT_SESSION_TRANSCRIPT
-{{input "transcript"}}
-CURRENT_SESSION_TRANSCRIPT>>>
+<<< TRANSCRIPT TO FOLLOW >>>

prompts/bounds.yml

@@ -1,6 +1,6 @@
 id: dnd.session_bounds
 version: "1.0.0"
-default_profile: local-gemma4
+default_profile: openrouter-gemini-flash
 description: Review D&D session transcript and identify starting and ending segments for actual gameplay.
 inputs:
   - name: transcript
@@ -12,6 +12,9 @@ messages:
     content_file: ./bounds.system.md
   - role: user
     content_file: ./bounds.user.md
+  - role: user
+    content: |
+      {{input "transcript"}}
 output:
   format: json
   validation_mode: json_schema