feat: mandatory speech bubbles in story panels, v0.26.0v0.26.0

Two-part fix for missing dialogue bubbles:

1. Panel script prompt: each panel description must include quoted Bulgarian
   dialogue for the character to speak/think. At least 3 of 4 panels per page
   must have speech or thought text in the description.

2. Image prompt: added MANDATORY SPEECH BUBBLES block requiring at least 3 of 4
   panels to contain a bubble, describing exact white-background/black-outline
   style for speech and cloud-shape for thought bubbles, all text Bulgarian Cyrillic.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/internal/story/artist.go b/internal/story/artist.go
index 3c66978..4ae0a6f 100644
--- a/internal/story/artist.go
+++ b/internal/story/artist.go
@@ -551,6 +551,12 @@ func buildStoryPagePrompt(section string, pageNum, totalPages int, style, bible
 			"Each panel is separated by a thin black gutter line. "+
 			"All 4 panels must be clearly distinct scenes — NOT one continuous image. "+
 			"The full image area must be covered by the 4 panels with no empty space.\n"+
+			"MANDATORY SPEECH BUBBLES — this is a comic book; characters MUST speak:\n"+
+			"  • At least 3 of the 4 panels MUST contain a speech bubble or thought bubble.\n"+
+			"  • If the panel description includes quoted dialogue, render it EXACTLY inside a speech bubble.\n"+
+			"  • Speech bubbles have a white background, black outline, and a tail pointing to the speaker.\n"+
+			"  • Thought bubbles use a cloud shape with small circles leading to the thinker.\n"+
+			"  • ALL bubble text is in Bulgarian Cyrillic — never Roman letters.\n"+
 			"VARIETY MANDATE — every panel MUST differ from the others in at least 3 of these dimensions: "+
 			"camera angle (close-up, medium shot, wide shot, bird's-eye, low angle), "+
 			"character pose or action, location or background detail, lighting or time-of-day, "+