feat: implement Redis Streams support with stream checkpoints and update history

- Added Redis Streams operations to the message bus interface and implementation.
- Introduced StreamCheckpoint model to track last processed stream entry per document.
- Implemented UpsertStreamCheckpoint and GetStreamCheckpoint methods in the Postgres store.
- Created document_update_history table for storing update payloads for recovery and replay.
- Developed update persist worker to handle Redis Stream updates and persist them to Postgres.
- Enhanced Docker Compose configuration for Redis with persistence.
- Updated frontend API to support fetching document state with optional share token.
- Added connection stability monitoring in the Yjs document hook.

backend/internal/handlers/document_test.go

@@ -7,10 +7,12 @@ import (
 	"testing"
 
 	"github.com/M1ngdaXie/realtime-collab/internal/auth"
+	"github.com/M1ngdaXie/realtime-collab/internal/messagebus"
 	"github.com/M1ngdaXie/realtime-collab/internal/models"
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
 	"github.com/stretchr/testify/suite"
+	"go.uber.org/zap"
 )
 
 // DocumentHandlerSuite tests document CRUD operations
@@ -23,7 +25,7 @@ type DocumentHandlerSuite struct {
 // SetupTest runs before each test
 func (s *DocumentHandlerSuite) SetupTest() {
 	s.BaseHandlerSuite.SetupTest()
-	s.handler = NewDocumentHandler(s.store)
+	s.handler = NewDocumentHandler(s.store, messagebus.NewLocalMessageBus(), "test-server", zap.NewNop())
 	s.setupRouter()
 }