Build qualified prospect lists from directories, databases, and community research. Use when the user wants to build a target list of potential clients beyond real-time keyword search. Also use when the user mentions "prospect list," "lead list," "ICP," "ideal client profile," "target accounts," "who should I reach out to," or "build a list." This is systematic list-building — different from the real-time keyword-search skill. For writing outreach after building the list, see cold-dm.