Polar Lightning Network regtest GUI. One-click setup of multi-node LN networks for testing. Repo: . Features - Multi-node : bitcoind + LND/CLN/Eclair/LDK Node + Tap (Taproot Assets). - GUI : drag-and-drop network builder. - Channel topology editor : open / close channels visually. - Payment simulator : send/receive between nodes. - Balance + fee customization. - Persisted networks : save/restore. - Tor optional for testing onion-only setups. Setup Download installer (Mac/Win/Linux). Requires Docker. Create network: 1. New network → name + chain (regtest). 2. Drag node icons (LND, CLN, etc.) o…