replace Redis with an embedded SQLite string->string KV store (group commit, in-tx events, SQL search)

internal/api/schema_handlers.go

@@ -3,10 +3,10 @@ package api
 import (
 	"encoding/json"
 	"net/http"
-	"time"
 )
 
-// handleSchemaGet returns the live per-field schema derived from meta:events.
+// handleSchemaGet returns the per-field schema (recomputed from the store every
+// few minutes; see schema.Indexer).
 func (s *Server) handleSchemaGet(w http.ResponseWriter, r *http.Request) {
 	if s.schemaIndexer == nil {
 		http.Error(w, "schema indexer not running", http.StatusServiceUnavailable)
@@ -17,29 +17,26 @@ func (s *Server) handleSchemaGet(w http.ResponseWriter, r *http.Request) {
 	_ = json.NewEncoder(w).Encode(snap)
 }
 
-// handleSchemaRescan re-emits a set event for every existing property via the
-// meta publisher, waits for the indexer to drain, and returns the refreshed
-// schema. Equivalent to a full SCAN-based rebuild without locking Redis.
+// handleSchemaRescan recomputes the schema from a full scan of the store and
+// returns it. It no longer republishes every property into meta:events — the
+// indexer reads the store itself — so a rescan floods no consumer.
 func (s *Server) handleSchemaRescan(w http.ResponseWriter, r *http.Request) {
 	if s.schemaIndexer == nil {
 		http.Error(w, "schema indexer not running", http.StatusServiceUnavailable)
 		return
 	}
 
-	count, err := s.RepublishMetadata()
+	snap, err := s.schemaIndexer.Rebuild(r.Context())
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
 	}
-
-	s.schemaIndexer.WaitForDrain(10 * time.Second)
-
-	snap := s.schemaIndexer.Snapshot()
-	snap.Source = "rescan"
+	out := *snap
+	out.Source = "rescan"
 
 	w.Header().Set("Content-Type", "application/json")
 	_ = json.NewEncoder(w).Encode(map[string]any{
-		"published_events": count,
-		"schema":           snap,
+		"published_events": 0,
+		"schema":           &out,
 	})
 }