- Move MCP server implementation and tool schemas from cmd/okf into pkg/okf
- Move hub vault operations and lifecycle management from cmd/okf into pkg/sync
- Implement generic frontmatter --filter AST evaluation in pkg/okf/filter.go
- Implement --stale-within temporal horizon staleness engine in pkg/okf
- Introduce okf.SaveOptions and HubOp structures for clean API ergonomics
- Wrap Engine.Sync reconcile and commit phases in a retry loop (DefaultMaxSyncRetries = 5) with exponential backoff and jitter on concurrent 409 head conflicts
- Implement MergeLogContent to automatically union divergent entries in log.md by ISO date heading while preserving ordering and deduplicating
- Prevent spurious collision forking for log.md during parallel agent sync cycles
