Generate a screen specification from a Figma frame using MCP tools (get_design_context, get_screenshot). Produces a spec doc matching the SCREEN_SPEC.md template with layout sketch, components used, spacing observed, data dependencies, copy, accessibility notes, interactions, and error states. Use when documenting a specific screen. Do not use when the screen has no Figma frame or when the spec already exists. For 6 or more screens, use screen-spec-fleet. Once screens document raw values, use extract-foundations-from-screens to converge tokens.
