v0.7.0 — generic ChunkService + UpdateChunkPosition (chunk_type enum) BREAKING (pre-1.0 minor): replaces ClusterService with a generic ChunkService; adds UpdateChunkPosition(ChunkType chunk_type, string chunk_id, HexPosition); removes UpdateClusterPosition + Cluster.position (field 8 reserved). ChunkType is a code-shipped enum (CHUNK_TYPE_UNSPECIFIED=0, CHUNK_TYPE_CLUSTER=1). Cluster/ListClusters/GetCluster unchanged. Regenerated Go + TS. Merged via !14 (register-generic-chunk-position).