README: add SoloLuck to the recommended pools table

[sololuckio]

Adds one row to the Recommended Pools table:

| SoloLuck | stratum.sololuck.io | 3335 | 0% | Solo mining, minimum difficulty 1 |

Port 3335 has a minimum share difficulty of 1, which suits ESP32 miners like SparkMiner. SoloLuck is a solo Bitcoin pool with a 0% fee and no account. It is non-custodial: if a miner finds a block, the reward is paid in the coinbase straight to that miner's own address. It runs ckpool. SoloLuck has not found a Bitcoin block.

The row sits with the other 0% pools, after FindMyBlock EU. SoloLuck is already in the pool quick links of AxeOS (bitaxeorg/ESP-Miner#1785) and the NerdQAxe firmware (shufps/ESP-Miner-NerdQAxePlus#649).

Disclosure: this pull request comes from the pool's operator. Happy to change the wording or the position.

🤖 Generated with Claude Code

https://claude.ai/code/session_01MpFmAktoeVKs48ugoLk7bC

[SneezeGUI]

Thanks — and for the clear disclosure that this comes from the pool's operator.

I verified the row before merging: stratum.sololuck.io:3335 is your documented low-difficulty port (minimum difficulty 1, start 4,000, vardiff), which is the right tier for ESP32-class devices, and the 0% / no-account / non-custodial / no-block-yet description matches your site. I can also see you went through the same process in AxeOS (bitaxeorg/ESP-Miner#1785) and NerdQAxe (shufps/ESP-Miner-NerdQAxePlus#649), both merged.

For anyone reading: this lands as a community-listed option alongside FindMyBlock — SparkMiner speaks standard stratum and works with any solo pool, and Public Pool stays the default. Merging as-is.