release: GGraphDB v1.1.2

[SamuelSupe]

Summary

• add opt-in in-memory queue plus segmented local WAL for single-writer deployments without PostgreSQL
• batch concurrent multi-tenant writes while preserving per-tenant FIFO ordering, durability, recovery, backpressure, and graceful shutdown
• skip storage rewrites for byte-equivalent entity upserts
• add WAL/batch metrics, structured logs, OpenTelemetry spans and recovery trace links
• update write API/configuration docs, OpenAPI, changelog, SDK versions, and release documentation for 1.1.2

Validation

• scripts/release_gate.sh (OrbStack): passed
  • Go unit tests, go vet, race tests
  • v1.0 compatibility and release freeze checks
  • RustFS and PostgreSQL coordinator/CAS integrations
  • full E2E and sustained ingest load
  • cold-reader scaling, freshness/repair, backup/restore
  • reader/writer restart, object-store outage, and purge cleanup
• Python SDK tests: 7 passed, 1 skipped
• release diff checked to exclude the separate 1.2 GraphRAG/retrieval work