feat(workspace): tabula-rasa outliner architecture, SQLite blocks/block_tags schema & echo-protected live room sync

internal/ws/hub.go

@@ -1,7 +1,6 @@
 package ws
 
 import (
-	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"log"
@@ -47,10 +46,9 @@ type docLockItem struct {
 	expiresAt time.Time
 }
 
-type CRDTStore interface {
-	GetDocumentCRDTState(docID string) ([]byte, [][]byte, error)
-	AppendDocumentCRDTUpdate(docID string, update []byte, userID string) error
-	SaveDocumentCRDTState(docID string, stateBlob []byte, userID string) error
+type DocStore interface {
+	LoadDocumentState(docID string) (string, []domain.DocumentBlock, error)
+	FlushDocumentState(docID string, title string, blocks []domain.DocumentBlock) error
 }
 
 type Hub struct {
@@ -63,7 +61,7 @@ type Hub struct {
 	sseRooms     map[string]map[*SSEClient]bool
 	locks        map[string]*docLockItem
 	docRooms     map[string]*DocRoom
-	crdtStore    CRDTStore
+	docStore     DocStore
 }
 
 func NewHub() *Hub {
@@ -81,10 +79,10 @@ func NewHub() *Hub {
 	return h
 }
 
-func (h *Hub) SetCRDTStore(store CRDTStore) {
+func (h *Hub) SetDocStore(store DocStore) {
 	h.mu.Lock()
 	defer h.mu.Unlock()
-	h.crdtStore = store
+	h.docStore = store
 }
 
 func (h *Hub) Register(c *Client) {
@@ -688,39 +686,6 @@ func (h *Hub) ServeSSE(w http.ResponseWriter, r *http.Request, roomID, userID st
 	fmt.Fprintf(w, "data: %s\n\n", connectedMsg)
 	flusher.Flush()
 
-	// If initial rooms had doc rooms, send CRDT_INIT
-	if h.crdtStore != nil {
-		for rID := range client.subscribedRooms {
-			if strings.HasPrefix(rID, "doc:") {
-				docID := strings.TrimPrefix(rID, "doc:")
-				stateBlob, updates, err := h.crdtStore.GetDocumentCRDTState(docID)
-				if err == nil && (len(stateBlob) > 0 || len(updates) > 0) {
-					var b64Updates []string
-					for _, u := range updates {
-						b64Updates = append(b64Updates, base64.StdEncoding.EncodeToString(u))
-					}
-					b64State := ""
-					if len(stateBlob) > 0 {
-						b64State = base64.StdEncoding.EncodeToString(stateBlob)
-					}
-					initMsg := domain.WSMessage{
-						Event: "CRDT_INIT",
-						Payload: map[string]interface{}{
-							"docId":   docID,
-							"state":   b64State,
-							"updates": b64Updates,
-						},
-						Timestamp: domain.NowISO(),
-					}
-					if initBytes, err := json.Marshal(initMsg); err == nil {
-						fmt.Fprintf(w, "data: %s\n\n", initBytes)
-						flusher.Flush()
-					}
-				}
-			}
-		}
-	}
-
 	ticker := time.NewTicker(15 * time.Second)
 	defer ticker.Stop()
 
@@ -811,49 +776,6 @@ func (c *Client) readPump() {
 					if c.hub.ReleaseDocLock(docID, c.userID, false) {
 						c.hub.BroadcastDocEvent(docID, "DOC_UNLOCKED", map[string]string{"docId": docID, "doc_id": docID})
 					}
-				case "CRDT_JOIN":
-					c.hub.JoinRoom(c, "doc:"+docID)
-					room := c.hub.GetOrCreateDocRoom(docID)
-					b64State, b64Updates := room.GetInitialSnapshot()
-					if len(b64State) > 0 || len(b64Updates) > 0 {
-						c.SendEvent("CRDT_INIT", map[string]interface{}{
-							"docId":   docID,
-							"state":   b64State,
-							"updates": b64Updates,
-						})
-					}
-				case "CRDT_UPDATE":
-					var p struct {
-						Update string `json:"update"`
-					}
-					_ = json.Unmarshal(incoming.Payload, &p)
-					if p.Update != "" {
-						if raw, err := base64.StdEncoding.DecodeString(p.Update); err == nil && len(raw) > 0 {
-							room := c.hub.GetOrCreateDocRoom(docID)
-							room.ApplyUpdate(raw, c.userID, nil, nil)
-						}
-					}
-				case "CRDT_COMPACT":
-					var p struct {
-						State string `json:"state"`
-					}
-					_ = json.Unmarshal(incoming.Payload, &p)
-					if p.State != "" {
-						if raw, err := base64.StdEncoding.DecodeString(p.State); err == nil && len(raw) > 0 {
-							room := c.hub.GetOrCreateDocRoom(docID)
-							room.CompactState(raw, c.userID)
-						}
-					}
-				case "CRDT_AWARENESS":
-					c.hub.BroadcastRoom("doc:"+docID, "CRDT_AWARENESS", incoming.Payload, c)
-					room := c.hub.GetOrCreateDocRoom(docID)
-					room.BroadcastAwareness(incoming.Payload, c.userID, nil, nil)
-				case "CRDT_LEAVE":
-					c.hub.LeaveRoom(c, "doc:"+docID)
-					c.hub.BroadcastRoom("doc:"+docID, "CRDT_AWARENESS_LEAVE", map[string]interface{}{
-						"docId":  docID,
-						"userId": c.userID,
-					}, c)
 				}
 			}
 		}