- snapshotnet.cpp: always re-scan on HasServableSnapshot; auto-dump
from current chain when synced to canonical snapshot height
- net.cpp: EnsureLocalSnapshot() at startup so NODE_SNAPSHOT reaches
outbound peers in the first version message
- CMakeLists.txt: add test_snapshotnet + test_chaindb_runtime targets
- test/snapshotnet_tests.cpp, test/chaindb_runtime_tests.cpp: full
coverage for the SnapshotNet P2P protocol + CRocksTxDB wrapper layer
Krystie