enforce word count in chapter_polish and book_chapter templates

- chapter_polish: add explicit 'chapter_target_words minimum' warning to think hint
  with instruction to EXPAND scenes to reach target length
- chapter_polish: add word_count criterion (30%) to adjudication, restructure weights
- book_chapter PASS 1: strengthen word count instruction with explicit stop-early warning
- book_chapter: add word_count criterion (30%) to adjudication, restructure weights

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

templates/chapter_polish.yml

@@ -29,6 +29,14 @@ steps:
       Genre: {genre_name}  |  Audience: {genre_audience}
       Chapter: {task.message}
 
+      TARGET LENGTH: {chapter_target_words} words minimum.
+      ⚠️ CRITICAL — LENGTH REQUIREMENT:
+        - The polished chapter MUST be at least {chapter_target_words} words.
+        - DO NOT shorten the chapter. Expand scenes, deepen emotional beats, and add sensory
+          detail as needed to reach the word count target.
+        - If the original chapter is under target, the polish is your opportunity to bring it up.
+        - Under-length chapters will be REJECTED by the editorial board regardless of prose quality.
+
       You have received a full editorial review from three editors.
 
       EDITORIAL CONSENSUS:
@@ -48,6 +56,7 @@ steps:
       Preserve everything the editors marked as STRENGTHS.
       Do not add new plot elements not already present.
       Match the genre tone and audience level throughout.
+      Expand scenes with sensory detail, interiority, and dialogue to reach {chapter_target_words} words.
       Output ONLY the fully rewritten chapter text.
 
   - type: document
@@ -61,15 +70,18 @@ adjudication:
   pass_threshold: 90
   deliverable_type: consumer
   criteria:
+    word_count:
+      weight: 30
+      description: "Chapter meets the {chapter_target_words}-word minimum; longer is better, shorter fails"
     prose_quality:
-      weight: 35
+      weight: 25
       description: "Language is refined, no awkward phrasing"
     consistency:
-      weight: 25
+      weight: 20
       description: "Style and tone uniform throughout"
     engagement:
-      weight: 25
+      weight: 20
       description: "Text is compelling and polished"
     formatting:
-      weight: 15
+      weight: 5
       description: "Proper formatting, no artifacts"