ZY-GDB-P1-001: B+Tree index with insert/find/delete/range/serialization
ZY-GDB-P1-002: NamespaceManager with create/delete/get/list/exists/validation
ZY-GDB-P1-003: RangeScanner for rectangular area queries
ZY-GDB-P1-004: NearbyQuery for proximity search with Euclidean distance
ZY-GDB-P1-005: EventLog replay/replayFromSeqNo/getByOperation/tianyanHook
ZY-GDB-P1-006: SecondaryIndex for one-to-many field indexing
All Phase 0 tests (95/95) and Phase 1 tests (101/101) pass.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>