PaperBanana Slide Deck

End-to-end slide deck creation and modification. Two deck modes (image and editable, chosen explicitly in Phase M), and within image mode two workflows: creating new decks from scratch, and regenerating existing decks after prompt edits.

Image pipeline: Content → Style Selection → Outline → Prompts → Image Generation → PPTX Merge Editable pipeline: Content → slide-spec.json (native text/table/chart/shape/line/group) → validate → build PPTX → render previews → Critic review → revise spec → rebuild

Phase M: Deck mode selection

Record exactly one line in deck-mode.txt: image or editable.

• Use editable when the user asks to edit text/tables/charts/connectors in PowerPoint or explicitly asks for editable PPTX.
• Use image when the user asks for generated full-slide artwork or preserves the existing PaperBanana image workflow.
• If both are plausible, ask before generation. Do not infer from file presence.
• editable requires slide-spec.json; a missing or invalid spec is an error. Never fall back to image mode while claiming editability.

Mode Detection (image mode)

Within image mode, determine the workflow by checking the target directory: