A LONG-ONLY, SPOT, single-instrument daily-momentum trend follower on LINKUSDT.BINANCE_SPOT. This is a deliberate FOUR-AXIS pivot away from the XRP dual-timeframe momentum-confluence idea that just collided (and that whole XRP+confluence sub-family has died overfit): (1) VENUE moves from USD-M futures to BINANCE_SPOT — the factory's highest-survival, most under-represented venue (~6% vs a >=15% target); (2) DIRECTION moves from long-short to LONG-ONLY, which is what a CASH spot account can express and what removes the fragile short half that kept whipsawing XRP; (3) MECHANISM moves from two-timeframe SIGN-AGREEMENT (the exact recipe that overfit on XRP) to VOLUME/PARTICIPATION-CONFIRMED momentum — the mechanism actually advancing through the pipeline right now (SolSpotVolumeConfirmedMomentumLong, EthVolumeConfirmedMomentumLS, AvaxConvictionGatedMomentumLS, BnbDualTimeframeTrendConfluenceLS all cleared backtest_review/optimizing); (4) INSTRUMENT moves from XRP to LINK, a deeply liquid 2019-listed name absent from every recent momentum run. LINK is a strong carrier for slow spot momentum: it trends hard on DeFi/oracle-adoption cycles and spends the rest of the time ranging, so a participation-gated daily trend follower sits out the chop and only engages when volume confirms real directional demand. Only 3 free parameters over a coarse grid, directly attacking the overfit/PBO death mode.