Write one durable insight the founder just revealed (a standing preference, a rule about how they write, a fact about the product, or what a shipped move earned) into this product run's Memory, the shared record every growth and marketing draft is written from. Scope 'act'; free, unmetered, and available on every plan. Append-only into the KB substrate with inline provenance (which key wrote it, when, and the move it came out of). Recording the same insight twice supersedes the earlier note rather than duplicating it, and a note the founder has pinned is left untouched and reported as already recorded. Bounded to 500 characters and to a fixed number of insights per product run per day, claimed atomically before the write.