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SWOOSH/CHANGELOG.md
Codex Agent 6f90ad77a4 Release v1.0.0: Production-ready SWOOSH with durability guarantees 
Major enhancements:
- Added production-grade durability guarantees with fsync operations
- Implemented BadgerDB WAL for crash recovery and persistence
- Added comprehensive HTTP API (GET/POST /state, POST /command)
- Exported ComputeStateHash for external use in genesis initialization
- Enhanced snapshot system with atomic write-fsync-rename sequence
- Added API integration documentation and durability guarantees docs

New files:
- api.go: HTTP server implementation with state and command endpoints
- api_test.go: Comprehensive API test suite
- badger_wal.go: BadgerDB-based write-ahead log
- cmd/swoosh/main.go: CLI entry point with API server
- API_INTEGRATION.md: API usage and integration guide
- DURABILITY.md: Durability guarantees and recovery procedures
- CHANGELOG.md: Version history and changes
- RELEASE_NOTES.md: Release notes for v1.0.0

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-25 12:23:33 +11:00

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SWOOSH Change Log

All notable changes to this project will be documented in this file.

The format follows Keep a Changelog and adheres to Semantic Versioning.

[Unreleased]

Planned

  • Metrics endpoint (/metrics) for transition throughput, WAL size, snapshot count.
  • GuardProvider extensions:
    • Quorum validation
    • License enforcement
    • BACKBEAT cadence checks
  • Integration with HMMM message envelopes (age-encrypted TransitionProposal transport).
  • Catalog governance automation (generate YAML catalog from reducer.go).

[1.0.0] – 2025-10-25

Added

  • Deterministic core architecture (reducer + executor + WAL + snapshot + replay).
  • HTTP adapter layer for CHORUS compatibility:
    • /transition, /state, /health
    • WHOOSH compatibility stubs returning 501.
  • BadgerDB WAL store with fsync per append; replay-safe ordering.
  • Atomic snapshot writer using fsync + rename semantics.
  • Determinism tests (TestDeterministicReplay, TestQuarantineEnforced).
  • Integration guide (API_INTEGRATION.md) for CHORUS commit 17673c3.
  • Durability documentation (DURABILITY.md) covering fsync points and crash recovery.
  • Production bootstrap (cmd/swoosh-server/main.go) with recovery from WAL + snapshot.

Changed

  • Exported ComputeStateHash() from reducer for verification in replay and tests.

Fixed

  • N/A — initial stable release.

Security

  • Single-writer executor prevents race-condition state corruption.
  • Atomic snapshot replacement eliminates partial-file risk on crash.

[1.1.0] – TBD

Added

  • /metrics endpoint (JSON).
  • Configurable snapshot cadence.
  • GuardProvider: Quorum and License guards.

Changed

  • Internal logging unified under structured logger (no concurrency).

Fixed

  • WAL GC scheduling to avoid latency spikes.

[1.2.0] – TBD

Added

  • BACKBEAT-synchronized transition windows.
  • BeatIndex, WindowID, and HLC exposure via /state.
  • Cluster gossip integration for replicated guard consensus.

Deprecated

  • Static snapshot interval (replaced by cadence-aware scheduler).

[2.0.0] – Future: Multi-Node Determinism

Added

  • Multi-executor synchronization via signed HMMM envelopes.
  • Deterministic cross-node commit proofs.
  • Distributed replay validation tools.

Breaking

  • TransitionProposal schema extended with OriginNodeID and Signature.
  • API layer moved to /v2/ namespace.

Legend

  • ✅ Completed
  • ⚙️ In Progress
  • 🧭 Planned