持久化设备留言待收听状态并支持重启恢复

database/migrate_to_shared_talkingq.py

@@ -40,6 +40,7 @@ MINI_PROGRAM_TABLES = [
     "device_alarm_events",
     "im_conversations",
     "im_messages",
+    "device_pending_voice_messages",
     "child_location_current",
     "child_location_history",
 ]

database/talkingq_shared_schema.sql

@@ -455,6 +455,29 @@ CREATE TABLE IF NOT EXISTS `im_messages` (
     ON DELETE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 
+-- Persistent unread voice-message index for device NFC owner-card playback.
+-- Audio content is still stored by im_messages/media_file_key; this table only stores delivery state.
+CREATE TABLE IF NOT EXISTS `device_pending_voice_messages` (
+  `id` BIGINT NOT NULL AUTO_INCREMENT,
+  `target_device_id` VARCHAR(64) NOT NULL,
+  `sender_device_id` VARCHAR(64) NULL,
+  `im_message_id` BIGINT NOT NULL,
+  `media_file_key` VARCHAR(255) NOT NULL,
+  `audio_url` VARCHAR(512) NULL,
+  `source` VARCHAR(32) NOT NULL DEFAULT 'unknown',
+  `status` VARCHAR(32) NOT NULL DEFAULT 'pending',
+  `delivery_count` INT NOT NULL DEFAULT 0,
+  `delivered_at` DATETIME NULL,
+  `listened_at` DATETIME NULL,
+  `created_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  `updated_at` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `uq_device_pending_voice_target_msg` (`target_device_id`, `im_message_id`),
+  KEY `idx_device_pending_voice_target_status_created` (`target_device_id`, `status`, `created_at`),
+  KEY `idx_device_pending_voice_sender` (`sender_device_id`),
+  KEY `idx_device_pending_voice_im_message` (`im_message_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
 CREATE TABLE IF NOT EXISTS `child_location_current` (
   `child_id` BIGINT NOT NULL,
   `device_id` VARCHAR(64) NOT NULL,