Move cover-image from book: to html: format only

Add PDF/EPUB format to main config, remove _print_source

Regenerate cover with author name higher

Regenerate cover at correct page dimensions

Regenerate cover with KDP safe zone margins

Clarify: AI is your partner through ALL six steps

Add complexity ceiling argument to vibe coding section

Reorder preface: diagram first, then book descriptions

Fix mermaid diagram: use <br/> for line breaks, constrain width

Add vibe coding section to philosophy chapter

Update book progression diagram to show CND → CPPA relationship

Replace ASCII art book progression with Mermaid diagram

Add conventions section to preface

Add conversation annotations to three transcript-heavy chapters

Fix all remaining fence issues: templates, inline prompts, CSV data