user                   filar agent              lp agent api               solana
   ──── click [Zap In] ──▶
                          recommendBinRange()
                          IL projection (recharts)
                          POST /pools/{id}/add-tx ─▶
                          {                           build tx
                            stratergy: "Spot",
                            owner: <pubkey>,
                            inputSOL: 0.05,
                            percentX: 0.5,
                            fromBinId: -10,
                            toBinId:   10,
                            slippage_bps: 200
                          }
                                                   ◀── 200 success
                                                       lastValidBlockHeight: N
                                                       addLiquidityTxsWithJito[2]
                          deserialize VTx
                          wallet.signAllTransactions ─────────▶ user signs
                          POST /pools/landing-add-tx ─▶
                          { swapTxsWithJito,            land via jito bundle ───▶ tx
                            addLiquidityTxsWithJito,
                            lastValidBlockHeight }
                                                   ◀── 200 success
                                                       data.signature: <jito sig>
                          render solscan link
   ◀──── position visible
                          poll /lp-positions/opening ──▶
                                                   ◀── inRange: true