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2b0923f20e
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3 Commits

Author SHA1 Message Date
jordan
2b0923f20e feat: Distributed replication foundation (Phase 6A) - HLC, Merkle trees, CRDT stores, sync protocol 
- Add Hybrid Logical Clock (HLC) for causality tracking across nodes
- Implement Merkle tree for efficient diff/sync with BLAKE3 hashing
- Add CRDT-aware stores for assertions and votes with vector clocks
- Create stemedb-sync crate with anti-entropy and gossip protocols
- Add stemedb-rpc crate with gRPC sync service (proto definitions)
- Implement SupersessionChain for tracking assertion lifecycles
- Add Aphoria application for code analysis/reporting
- Add battery11 replication test scaffolding
- Fix .gitignore to exclude nested target directories

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-02-02 19:31:54 -07:00
jordan
42d4e09508 feat: Index persistence (Phase 5C) - vector hot/cold, visual checkpoint 
Phase 5C (Index Persistence) implementation:
- PersistentVectorIndex with hot/cold architecture
  - Hot: in-memory HNSW for recent vectors
  - Cold: memory-mapped HNSW loaded from disk
  - Background builder for WAL replay and atomic swap
  - BLAKE3 integrity verification
- PersistentVisualIndex with checkpoint persistence
  - BkTreeSnapshot with rkyv serialization
  - CRC32C corruption detection
  - Atomic write pattern (temp → fsync → rename)
- Key codec additions for vector index metadata
- Split large files into modules (<500 lines each)
  - battery_pre_sentinel.rs → battery/ directory
  - visual_index.rs → visual_index/ directory
  - persistent.rs → persistent/ directory
- Refactored ingest worker tests for clarity
- Updated roadmap to mark Phase 5 complete

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-02-02 15:43:18 -07:00
jordan
3320c24afa feat: WAL hardening (Phase 5B) - CRC32C, crash recovery, group commit, log rotation 
Add CRC32C checksums to WAL record format (v2), implement crash recovery
with automatic truncation of corrupt records, add feature-gated group commit
buffer for batched fsync under concurrent load, and implement log rotation
via segment files with global offset addressing.

Key changes:
- Record format v2: [len:u32][crc32c:u32][blake3:32][payload:N]
- recover_file() scans and truncates corrupt tail records
- GroupCommitBuffer batches fsync via MPSC channel (tokio feature gate)
- SegmentManager with binary search resolution and cursor-based cleanup
- Journal::read() auto-refreshes segments on miss for writer/reader split
- Split recovery.rs and key_codec.rs into directory modules for 500-line max

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
 2026-02-02 12:36:35 -07:00