Fix: design_roundtable.yml uses invalid step type 'boardroom'

Changed type: boardroom to type: think with route: boardroom.
Also added synthesis think step before package so Victor summarizes
the boardroom debate into structured fields before Scribe serializes.

pipeline.py only recognizes: think, package, reply, close, document, pdf, tool, spawn
'boardroom' as a step type would silently fail (pipeline_unknown_step log).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

templates/design_roundtable.yml

@@ -3,15 +3,6 @@ description: >
   The Crimson Leaf board debates their independent design reviews in 2–3
   structured rounds, reaching consensus on required changes before polish.
 
-participants:
-  - Victor
-  - Nolan
-  - Sarah
-  - Elena
-
-iteration_limit: 3
-convergence_signal: "CONSENSUS REACHED"
-
 participant_prompt:
   - "= identity.md"
 
@@ -27,7 +18,9 @@ sections:
   - instructions
 
 steps:
-  - type: boardroom
+  - type: think
+    route: boardroom
+    rotate_participants: true
     loop:
       max_iterations: 3
       condition: until_consensus
@@ -39,15 +32,6 @@ steps:
 
       COMPANY DESIGN UNDER REVIEW: {task.message}
 
-      YOUR REVIEW:
-      {this_agent_review}
-
-      OTHER REVIEWS:
-      [Victor] {victor_review}
-      [Nolan] {nolan_review}
-      [Sarah] {sarah_review}
-      [Elena] {elena_review}
-
       Round {task.iteration} of the design review debate.
 
       Respond to the other board members' most critical points:
@@ -64,7 +48,23 @@ steps:
       3. Any unresolved risks that must be accepted or mitigated
 
       When the group has reached sufficient consensus for the polish step,
-      end your response with: CONSENSUS REACHED
+      end your response with: consensus_reached: true
+
+  - type: think
+    agent: "Victor"
+    hint: |
+      You are Victor, CEO of Crimson Leaf LLC.
+
+      The design roundtable is complete. Synthesize the board's debate into a
+      structured consensus summary:
+
+      1. DESIGN VERDICT — GO or KILL, with Victor's final reasoning
+      2. KEY CHANGES — exact list of changes to apply during design_polish
+      3. CONSENSUS CRITIQUE — one paragraph summary of the board's unified position
+      4. VICTOR FINAL — Victor's closing statement
+      5. NOLAN FINAL — Nolan's final position summary
+      6. SARAH FINAL — Sarah's final position summary
+      7. ELENA FINAL — Elena's final position summary
 
   - type: package
     schema:
@@ -88,3 +88,6 @@ steps:
           nolan_final: "{nolan_final}"
           sarah_final: "{sarah_final}"
           elena_final: "{elena_final}"
+
+  - type: close
+    rag_update: true