数据引擎重构

sql/init_core_tables.sql

@@ -205,6 +205,9 @@ CREATE TABLE IF NOT EXISTS sync_tracker (
     last_sync_time BIGINT NOT NULL DEFAULT 0,
     last_sync_at TIMESTAMP WITH TIME ZONE,
     sync_status VARCHAR(32) DEFAULT 'pending',
+    last_full_sync_time BIGINT NOT NULL DEFAULT 0,
+    sync_count BIGINT NOT NULL DEFAULT 0,
+    last_sync_type VARCHAR(16) NOT NULL DEFAULT '',
     PRIMARY KEY (id)
 );
 
@@ -223,3 +226,6 @@ COMMENT ON COLUMN sync_tracker.interface_code IS '接口编码';
 COMMENT ON COLUMN sync_tracker.last_sync_time IS '最后同步时间(Unix时间戳)';
 COMMENT ON COLUMN sync_tracker.last_sync_at IS '最后同步时间点';
 COMMENT ON COLUMN sync_tracker.sync_status IS '同步状态: pending/success/running/failed';
+COMMENT ON COLUMN sync_tracker.last_full_sync_time IS '最后全量同步时间(Unix时间戳秒)，用于决定何时需要再次全量';
+COMMENT ON COLUMN sync_tracker.sync_count IS '累计同步次数';
+COMMENT ON COLUMN sync_tracker.last_sync_type IS '最后一次同步类型: full/incremental';