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>

go.mod

@@ -1,3 +1,24 @@
 module swoosh
 
-go 1.22
+go 1.23.0
+
+toolchain go1.24.5
+
+require github.com/dgraph-io/badger/v4 v4.8.0
+
+require (
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/dgraph-io/ristretto/v2 v2.2.0 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/go-logr/logr v1.4.3 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/google/flatbuffers v25.2.10+incompatible // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/otel v1.37.0 // indirect
+	go.opentelemetry.io/otel/metric v1.37.0 // indirect
+	go.opentelemetry.io/otel/trace v1.37.0 // indirect
+	golang.org/x/net v0.41.0 // indirect
+	golang.org/x/sys v0.34.0 // indirect
+	google.golang.org/protobuf v1.36.6 // indirect
+)