fix: usar getDb() en IdentityService y quitar AllowedGroups.dbInstance

Co-authored-by: aider (openrouter/openai/gpt-5) <aider@aider.chat>

src/services/group-sync.ts

@@ -190,7 +190,7 @@ export class GroupSyncService {
 			}
 
 			// Completar labels faltantes en allowed_groups usando todos los grupos devueltos por la API
-			try { AllowedGroups.dbInstance = this.dbInstance; this.fillMissingAllowedGroupLabels(groups); } catch {}
+			try { this.fillMissingAllowedGroupLabels(groups); } catch {}
 
 			// Actualizar métricas
 			this.cacheActiveGroups();
@@ -270,7 +270,7 @@ export class GroupSyncService {
 				if (!id) continue;
 				const label = nameById.get(id);
 				if (label) {
-					try { (AllowedGroups as any).dbInstance = this.dbInstance; AllowedGroups.upsertPending(id, label, null); } catch {}
+					try { AllowedGroups.upsertPending(id, label, null); } catch {}
 					filled++;
 				}
 			}
@@ -459,7 +459,7 @@ export class GroupSyncService {
 		const mode = String(process.env.GROUP_GATING_MODE || 'off').toLowerCase();
 		const enforce = mode === 'enforce';
 		if (enforce) {
-			try { AllowedGroups.dbInstance = this.dbInstance; } catch {}
+			// no-op
 		}
 
 		let groups = 0, added = 0, updated = 0, deactivated = 0;
@@ -502,7 +502,7 @@ export class GroupSyncService {
 		const mode = String(process.env.GROUP_GATING_MODE || 'off').toLowerCase();
 		const enforce = mode === 'enforce';
 		if (enforce) {
-			try { AllowedGroups.dbInstance = this.dbInstance; } catch {}
+			// no-op
 		}
 
 		let groups = 0, added = 0, updated = 0, deactivated = 0;
@@ -734,7 +734,7 @@ export class GroupSyncService {
 			const cached = this.activeGroupsCache.get(groupId);
 			if (cached && cached.trim()) {
 				try { this.ensureGroupExists(groupId, cached); } catch {}
-				try { AllowedGroups.dbInstance = this.dbInstance; AllowedGroups.upsertPending(groupId, cached, null); } catch {}
+				try { AllowedGroups.upsertPending(groupId, cached, null); } catch {}
 				this.cacheActiveGroups();
 				return cached;
 			}
@@ -745,7 +745,7 @@ export class GroupSyncService {
 				const name = row?.name ? String(row.name).trim() : '';
 				if (name) {
 					try { this.ensureGroupExists(groupId, name); } catch {}
-					try { AllowedGroups.dbInstance = this.dbInstance; AllowedGroups.upsertPending(groupId, name, null); } catch {}
+					try { AllowedGroups.upsertPending(groupId, name, null); } catch {}
 					this.cacheActiveGroups();
 					return name;
 				}
@@ -758,7 +758,7 @@ export class GroupSyncService {
 				const subject = g?.subject ? String(g.subject).trim() : '';
 				if (subject) {
 					try { this.ensureGroupExists(groupId, subject); } catch {}
-					try { AllowedGroups.dbInstance = this.dbInstance; AllowedGroups.upsertPending(groupId, subject, null); } catch {}
+					try { AllowedGroups.upsertPending(groupId, subject, null); } catch {}
 					this.cacheActiveGroups();
 					return subject;
 				}
@@ -779,7 +779,7 @@ export class GroupSyncService {
 			const mode = String(process.env.GROUP_GATING_MODE || 'off').toLowerCase();
 			if (mode === 'enforce') {
 				try {
-					(AllowedGroups as any).dbInstance = this.dbInstance;
+					// no-op
 					if (!AllowedGroups.isAllowed(groupId)) {
 						try { Metrics.inc('sync_skipped_group_total'); } catch {}
 						return { added: 0, updated: 0, deactivated: 0 };

src/services/identity.ts

@@ -16,7 +16,7 @@ export class IdentityService {
     const u = normalizeWhatsAppId(userId || '');
     if (!a || !u || a === u) return false;
     // Asegurar que el user_id numérico exista para no violar la FK (user_aliases.user_id -> users.id)
-    try { ensureUserExists(u, this.dbInstance); } catch {}
+    try { ensureUserExists(u, getDb()); } catch {}
     try {
       getDb().prepare(`
         INSERT INTO user_aliases (alias, user_id, source, created_at, updated_at)