feat: build vehicle data platform and production pipeline

vehicle-data-platform/deploy/migrations/009_alert_stream_checkpoint.sql

@@ -0,0 +1,22 @@
+-- Durable Kafka checkpoint for the event-time alert stream shadow/active worker.
+-- Business alert effects and next_offset will share one MySQL transaction when
+-- active evaluation is enabled. Kafka group offsets are committed afterwards.
+CREATE TABLE IF NOT EXISTS vehicle_alert_stream_checkpoint (
+  consumer_group VARCHAR(128) NOT NULL,
+  topic VARCHAR(255) NOT NULL,
+  partition_id INT NOT NULL,
+  next_offset BIGINT NOT NULL,
+  high_watermark BIGINT NOT NULL DEFAULT 0,
+  processed_count BIGINT UNSIGNED NOT NULL DEFAULT 0,
+  valid_count BIGINT UNSIGNED NOT NULL DEFAULT 0,
+  invalid_count BIGINT UNSIGNED NOT NULL DEFAULT 0,
+  late_count BIGINT UNSIGNED NOT NULL DEFAULT 0,
+  replay_skipped_count BIGINT UNSIGNED NOT NULL DEFAULT 0,
+  last_event_at DATETIME(3) NULL,
+  last_received_at DATETIME(3) NULL,
+  last_source_event_id VARCHAR(128) NOT NULL DEFAULT '',
+  updated_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3) ON UPDATE CURRENT_TIMESTAMP(3),
+  PRIMARY KEY (consumer_group, topic, partition_id),
+  KEY idx_alert_stream_updated (updated_at),
+  KEY idx_alert_stream_lag (consumer_group, high_watermark, next_offset)
+);