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

cmd/meta-core/main.go

@@ -30,36 +30,21 @@ func main() {
 	// Create leader info provider (Go binary only runs as leader - followers loop in bash)
 	leaderProvider := leader.NewLeaderInfoProvider(cfg)
 
-	// Connect to local Redis (supervisord starts Redis before meta-core)
-	// Retry connection since Redis may still be loading its dataset
-	redisURL := fmt.Sprintf("redis://localhost:%d", cfg.RedisPort)
-	log.Printf("[meta-core] Connecting to Redis at %s", redisURL)
-
-	storageClient := storage.NewClient("")
-	maxRetries := 30
-	retryDelay := 1 // seconds
-	var err error
-	for i := 0; i < maxRetries; i++ {
-		err = storageClient.Connect(redisURL)
-		if err == nil {
-			break
-		}
-		log.Printf("[meta-core] Redis connection attempt %d/%d failed: %v", i+1, maxRetries, err)
-		time.Sleep(time.Duration(retryDelay) * time.Second)
+	// Open the metadata store: an embedded SQLite file (internal/kv). There
+	// is no separate database process to wait for.
+	storageClient := storage.NewClient()
+	if err := storageClient.Connect(cfg.DBPath()); err != nil {
+		log.Fatalf("[meta-core] Failed to open the metadata store: %v", err)
 	}
-	if err != nil {
-		log.Fatalf("[meta-core] Failed to connect to Redis after %d attempts: %v", maxRetries, err)
-	}
-	log.Println("[meta-core] Connected to Redis")
 
 	// Schema-version sentinel: alpha clean-wipe gate. Refuses to boot when
-	// the existing Redis store predates the UUID-rooted schema, so legacy
-	// data can't silently leak into the new code paths. See
+	// the existing store predates the UUID-rooted schema, so legacy data
+	// can't silently leak into the new code paths. See
 	// docs/uuid-rooted-metadata.md.
 	if err := storageClient.EnsureSchemaVersion(storage.SchemaVersion); err != nil {
 		log.Fatalf("[meta-core] %v", err)
 	}
-	log.Printf("[meta-core] Redis schema version OK (v%d)", storage.SchemaVersion)
+	log.Printf("[meta-core] Store schema version OK (v%d)", storage.SchemaVersion)
 
 	// Beacon v2 (docs/project-architecture/beacon-v2.md): advertise meta-core
 	// as metamesh.core — carrying the /urls block services locate us by — plus
@@ -101,7 +86,7 @@ func main() {
 				return "running", []meshdisco.Resource{core, service}
 			},
 		})
-	if err := mesh.Start(); err != nil {
+		if err := mesh.Start(); err != nil {
 			log.Printf("[meta-core] Warning: UDP discovery disabled: %v", err)
 			mesh = nil
 		}