diff --git a/agents/cora/agent.yml b/agents/cora/agent.yml
index dbd6b19..0ea446a 100644
--- a/agents/cora/agent.yml
+++ b/agents/cora/agent.yml
@@ -2,6 +2,7 @@ name: Cora
 role: specialist
 locked: false
 model: default
+model_tier: reviewer
 character:
   professional_title: Continuity & Accuracy Editor
   personality: |
diff --git a/agents/devon/agent.yml b/agents/devon/agent.yml
index cfd28b2..45a2d50 100644
--- a/agents/devon/agent.yml
+++ b/agents/devon/agent.yml
@@ -2,6 +2,7 @@ name: Devon
 role: specialist
 locked: false
 model: power
+model_tier: reviewer
 character:
   professional_title: Developmental Editor
   personality: |
diff --git a/agents/lane/agent.yml b/agents/lane/agent.yml
index 60b44c4..8350c27 100644
--- a/agents/lane/agent.yml
+++ b/agents/lane/agent.yml
@@ -2,6 +2,7 @@ name: Lane
 role: specialist
 locked: false
 model: default
+model_tier: reviewer
 character:
   professional_title: Line Editor
   personality: |
diff --git a/agents/unknown/rag/agent.rag.md b/agents/unknown/rag/agent.rag.md
deleted file mode 100644
index 2bbc75c..0000000
--- a/agents/unknown/rag/agent.rag.md
+++ /dev/null
@@ -1,2 +0,0 @@
-- Standard Practice: Multi-chapter fiction projects initiate with a Character Bible, Concept Summary, detailed 10-chapter outline, Voice & Tone Guide, and sequential book_chapter task dispatches including dependencies.
-- Standard Practice: Novel production commences with a comprehensive planning deliverable containing Character Bible, Concept Summary, 10-chapter Outline, Voice & Tone Guide, Publishing Notes, followed by sequential spawning of dependent chapter-writing tasks.
diff --git a/templates/chapter_roundtable.yml b/templates/chapter_roundtable.yml
index 955426e..3fd3406 100644
--- a/templates/chapter_roundtable.yml
+++ b/templates/chapter_roundtable.yml
@@ -108,6 +108,8 @@ steps:
       - task_type: chapter_polish
         task_name: "Polish: {chapter_ref}"
         agent_name: Iris
+        depends_on:
+          - "Polish: {chapter_ref_prev}"
         context:
           chapter_text: "{chapter_text}"
           consensus_critique: "{consensus_critique}"