fix(planting-service): 移除 Dockerfile 中的 db push 回退逻辑

db push 不使用迁移文件，会导致添加必填列时失败

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

backend/services/planting-service/Dockerfile

@@ -51,7 +51,7 @@ COPY templates ./templates/
 RUN echo '#!/bin/sh\n\
 set -e\n\
 echo "Running database migrations..."\n\
-npx prisma migrate deploy || npx prisma db push --accept-data-loss\n\
+npx prisma migrate deploy\n\
 echo "Running database seed..."\n\
 npx prisma db seed || echo "Seed completed (or already seeded)"\n\
 echo "Starting application..."\n\