fix: migration 使用 IF NOT EXISTS 防止重复创建 + clean 去掉 --remove-orphans

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/deploy-mining.sh

@@ -1046,7 +1046,7 @@ services_clean() {
 
     # Step 1: Stop and remove containers, networks, images, and volumes via docker compose
     log_step "Stopping and removing containers, images, and volumes..."
-    docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" down --rmi all --volumes --remove-orphans 2>/dev/null || true
+    docker compose -f "$COMPOSE_FILE" --env-file "$ENV_FILE" down --rmi all --volumes 2>/dev/null || true
 
     # Step 2: Remove any remaining containers by name (in case compose down missed them)
     log_step "Removing any remaining containers..."

backend/services/planting-service/prisma/migrations/20260120000000_add_debezium_heartbeat/migration.sql

@@ -3,7 +3,7 @@
 -- 由 Debezium heartbeat.action.query 自动更新
 -- 防止因业务表长期无写入导致 WAL 堆积
 
-CREATE TABLE "debezium_heartbeat" (
+CREATE TABLE IF NOT EXISTS "debezium_heartbeat" (
     "id" INTEGER NOT NULL DEFAULT 1,
     "ts" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
 
@@ -11,4 +11,4 @@ CREATE TABLE "debezium_heartbeat" (
 );
 
 -- 插入初始记录
-INSERT INTO "debezium_heartbeat" ("id", "ts") VALUES (1, NOW());
+INSERT INTO "debezium_heartbeat" ("id", "ts") VALUES (1, NOW()) ON CONFLICT ("id") DO NOTHING;