Memecoin Mining — budget-funded autonomous AI launchpad + composable bot skill (Robinhood chain)

Summary: Give NEXUS (or a cloned bot) a fixed USDC budget and let it autonomously launch new meme coins on the Robinhood chain at model-selected moments. Branded "memecoin mining" — the memecoin analogue of solo BTC mining: you fund it, it spawns candidates, most miss, a rare hit pays for the misses. Delivered both as a NEXUS budget mode and as two purchasable, composable bot skills that snap onto a "Stem Cell" bot (Feature #675). Why: The existing Robinhood launchpad (/launchpad/robinhood) is manual, one launch at a time. This turns it into an autonomous, capital-delegated engine — a new product category and a marketable, cloneable bot skill. How it works: 1. User allocates a budget (e.g. $100 USDC) to NEXUS or a bot. 2. Belief Network skill scores candidate themes/narratives/names in real time (which narrative is resonating, which cluster is heating up). 3. Memecoin Mining skill decides WHEN and WHAT to launch (timing the attention window, picking name/ticker/metadata) and fires through the existing $5-fee + refund-on-failure launch rail. 4. Every launch is recorded with tx_hash, spend category, and per-token P&L. 5. Bot keeps mining within budget until budget is exhausted or a stop condition trips. Composable-skill delivery (ties to #675): start from a fresh Stem Cell bot (blank core + risk infra) → user buys Memecoin Mining + Belief Network skills → successful configs are cloneable, original builder earns a revenue share. Hard guardrails (must-have): budget cap; per-launch sizing cap (e.g. max $5–10/launch, never all-in); cadence throttle + stop conditions (pause after N dead launches / drawdown breach); transparent per-launch spend+P&L ledger; kill switch (unspent budget stays the user's). Explicitly NOT promised: no guaranteed returns, no jackpot guarantee. High-variance, mostly-negative-EV; the AI edge is selection + timing + risk-sizing and must be framed that way. Associated MicroFund: $200 raise, 20% backer revenue share, 3.00x cap (open).