Add Zalo channel adapter with webhook and send path

src/config/schema.ts

@@ -521,6 +521,15 @@ const feishuSchema = z.object({
   endpoint: z.string().url('Feishu endpoint must be a valid URL').optional(),
 }).optional();
 
+const zaloSchema = z.object({
+  oa_access_token: z.string().min(1, 'Zalo oa_access_token is required'),
+  endpoint: z.string().url('Zalo endpoint must be a valid URL').optional(),
+  webhook_token: z.string().optional(),
+  allowed_user_ids: z.array(z.string()).default([]),
+  require_mention: z.boolean().default(true),
+  mention_name: z.string().default('flynn'),
+}).optional();
+
 const browserSchema = z.object({
   enabled: z.boolean().default(false),
   executable_path: z.string().optional(),
@@ -702,6 +711,7 @@ export const configSchema = z.object({
   bluebubbles: bluebubblesSchema,
   line: lineSchema,
   feishu: feishuSchema,
+  zalo: zaloSchema,
   server: serverSchema.default({}),
   models: modelsSchema,
   backends: backendsSchema.default({}),