Implement GPU mining backends for three new algorithms:
- ProgPowZ (Zano): DAG-based ProgPow variant with 512 parents, dynamic
program generation per period
- ETChash (Ethereum Classic): Standard Ethash with 256 parents and
ECIP-1099 epoch calculation for post-block 11.7M
- Blake3DCR (Decred): Simple Blake3 hash kernel with no DAG requirement,
processing 180-byte block headers
Each implementation includes OpenCL kernels, GPU runners, thread
generators, and build system integration. Also adds fast modulo
optimization to ETCCache for GPU kernel performance.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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