Generate the ad creative for an idea: tagline, primary and secondary ad text, an image prompt, and sign-up page copy.
Requires a complete brief — call idealaunch_draft_brief and idealaunch_update_idea_brief first if it is not.
Args:
- ideaId (string)
- save (boolean): when true, writes the generated copy onto the idea. Defaults to false so the founder can review first.
Returns: { ideaId, saved, assets: { tagline, adPrimaryText, adSecondaryText, imagePrompt, signupLearnMoreMarkdown, signupThemePreset }, note }.
It does NOT write the sign-up page headline, description or CTA — set those with idealaunch_update_idea_brief, since they are what the conversion-destination check requires.
Consumes one of the idea's AI generation turns. Costs no Ad Run credit.