ppt-designlisted

# PPT Design Create a PowerPoint deck through a reviewable design contract. The final `.pptx` must use editable PowerPoint objects for text, tables, charts, and shapes. Photos and illustrations may remain image assets; a full-slide screenshot is not an editable deck. ## Choose the input mode ### Topic interview Use when the user gives a topic but no complete source package. Establish the topic, then ask exactly one question per turn. Wait for the user's answer before asking the next question. Do not bundle questions or infer an unanswered field. Prioritize goal, audience, context, core message, evidence, scope, and visual preferences. If the user answers with a blank or unusable response, repeat the same question in a clearer form. ### Source materials Use when the user supplies documents, notes, spreadsheets, links, images, or an existing deck. Treat the supplied material as the primary source of truth. Make a material inventory after reading the supplied artifacts with the appropriate local tools. Record extracted summaries, facts, assets, and licensing notes; identify missing facts or assets, and ask at most one question when the missing information would change the story or design. A binary or unsupported artifact may remain an explicit "待提取" gap, but it must not be silently treated as verified fact. If facts, data, examples, or visual assets are missing, instruct the Agent to search authoritative first-party sources. Record each external source, date, and use in `