diff --git a/src/services/command.ts b/src/services/command.ts
index 00b66bb..d169151 100644
--- a/src/services/command.ts
+++ b/src/services/command.ts
@@ -47,11 +47,18 @@ export class CommandService {
 
 		// Registrar interacción del usuario (last_command_at) para cualquier comando /t …
 		try {
-			const ensured = ensureUserExists(context.sender, this.dbInstance);
-			if (ensured) {
-				try {
-					this.dbInstance.prepare(`UPDATE users SET last_command_at = strftime('%Y-%m-%d %H:%M:%f','now') WHERE id = ?`).run(ensured);
-				} catch {}
+			let usersTableExists = false;
+			try {
+				const row = this.dbInstance.query(`SELECT name FROM sqlite_master WHERE type='table' AND name='users'`).get() as any;
+				usersTableExists = !!row;
+			} catch {}
+			if (usersTableExists) {
+				const ensured = ensureUserExists(context.sender, this.dbInstance);
+				if (ensured) {
+					try {
+						this.dbInstance.prepare(`UPDATE users SET last_command_at = strftime('%Y-%m-%d %H:%M:%f','now') WHERE id = ?`).run(ensured);
+					} catch {}
+				}
 			}
 		} catch {}
 
diff --git a/src/services/commands/index.ts b/src/services/commands/index.ts
index 8aca6fd..e90aa2d 100644
--- a/src/services/commands/index.ts
+++ b/src/services/commands/index.ts
@@ -81,6 +81,14 @@ export async function route(context: RouteContext, deps?: { db: Database }): Pro
 
   // Ayuda (no requiere DB)
   if (action === 'ayuda') {
+    // Métrica de alias "info" (compatibilidad con legacy)
+    try {
+      if (rawAction === 'info' || rawAction === '?') {
+        Metrics.inc('commands_alias_used_total', 1, { action: 'info' });
+      }
+    } catch {}
+    try { ResponseQueue.setOnboardingAggregatesMetrics(); } catch {}
+
     const isAdvanced = (tokens[2] || '').toLowerCase() === 'avanzada';
     const message = isAdvanced
       ? getFullHelp()
@@ -150,6 +158,7 @@ export async function route(context: RouteContext, deps?: { db: Database }): Pro
   }
 
   // Desconocido → ayuda rápida
+  try { Metrics.inc('commands_unknown_total'); } catch {}
   return [{
     recipient: context.sender,
     message: buildUnknownHelp()