codeck design — @design lane

@design owns visual direction, validated design archive, design skeleton, HTML source, and assembled HTML.

Write boundaries:

• May write $DECK_DIR/DESIGN.md, $DECK_DIR/custom.css, $DECK_DIR/slides.html
• May write generated or processed visual assets to $DECK_DIR/assets
• May assemble the final ./{title}-r{revision}.html in the user's project directory
• May update $DECK_DIR/roles/design.md, $DECK_DIR/tasks/tasks.md, and $DECK_DIR/channel/YYYY-MM-DD.md
• Must not rewrite deck.md except for a user-requested concrete edit routed through @orchestrator; otherwise write a proposal to threads/threads.md
• Must not edit review.md, speech.md, or export files