Improve sales project marketing material quality

Problem: in sales project the current persona "Coder" produces poor material for the website. Do a web research and find the best skill or a set of skills / prompts that would produce stellar copy material for marketing websites, blogs, give aways, etc. Is it going to be a Jaah persona, or just a set of skills or a subagent? What is the most efficient option? Suggest the approach first via artifacts, then implement.

Added the Marketer persona (ADR-0169): build persona like translate, procedure = hub skill marketing-copy (+4 references), blind copy-reviewer subagent, both shipped with the package; plan may file it; playbook expert + re-seed migration; docs. Interview (OFF): persona+skill+reviewer, full marketing build, 5 piece types, taste decisions as HTML sketch artifacts. Quick gate, 773+716 API, 255 web tests green; review lane blockers/warnings fixed. PR #6722 queued in the merge lane (full gate + Jaah Deploy watched by the lane's post-merge verification, not polled here). Deferred: optional project-local marketingskills install in jaah-ai/sales; a calibration run. Memory: used none; proposed 1 qa.