fix: use transaction with serializable

[AcrylicShrimp]

This PR resolves the problem that the server returns 500 internal server error when the client creates massive amount of application creation requests in parallel.

It adds ON CONFLICT DO NOTHING clause, and introduces retry attempts with random delay.

[sunrabbit123]

HttpError: {"message":"version '3618' for the application '062bb243-f1ef-4786-87e9-466cf3b94984' already exists","error":"Conflict","statusCode":409}
at /Users/sunrabbit/Desktop/wrtn/github/agent/node_modules/.pnpm/@nestia+fetcher@5.0.0_typescript@5.7.3/node_modules/@nestia/fetcher/src/internal/FetcherBase.ts:38:15
at step (/Users/sunrabbit/Desktop/wrtn/github/agent/node_modules/.pnpm/@nestia+fetcher@5.0.0_typescript@5.7.3/node_modules/@nestia/fetcher/lib/internal/FetcherBase.js:44:23)
at Object.next (/Users/sunrabbit/Desktop/wrtn/github/agent/node_modules/.pnpm/@nestia+fetcher@5.0.0_typescript@5.7.3/node_modules/@nestia/fetcher/lib/internal/FetcherBase.js:25:53)
at fulfilled (/Users/sunrabbit/Desktop/wrtn/github/agent/node_modules/.pnpm/@nestia+fetcher@5.0.0_typescript@5.7.3/node_modules/@nestia/fetcher/lib/internal/FetcherBase.js:16:58)
at processTicksAndRejections (node:internal/process/task_queues:105:5) {
method: 'POST',
path: '/applications/by-ids/062bb243-f1ef-4786-87e9-466cf3b94984/versions',
status: 409,
headers: {
'access-control-allow-origin': '*',
connection: 'keep-alive',
'content-length': '138',
'content-type': 'application/json; charset=utf-8',
date: 'Wed, 12 Mar 2025 05:14:42 GMT',
etag: 'W/"8a-5qdmYUCQxPVbjrt4p+18waHeguE"',
'keep-alive': 'timeout=5',
'x-powered-by': 'Express'
},
body_: {}
}

[sunrabbit123]

{"level":30,"time":1741758370459,"pid":22500,"hostname":"sunrabbitui-MacBookPro-2.local","req":{"id":2112,"method":"POST","url":"/application-versions/by-ids/b0968d25-12a5-4fb3-96d7-743e5cf32a9b/connectors","query":{},"params":{"path":["application-versions","by-ids","b0968d25-12a5-4fb3-96d7-743e5cf32a9b","connectors"]},"headers":{"host":"localhost:37001","connection":"keep-alive","content-type":"application/json","accept":"/","accept-language":"","sec-fetch-mode":"cors","user-agent":"node","accept-encoding":"gzip, deflate","content-length":"446"},"remoteAddress":"127.0.0.1","remotePort":49707},"res":{"statusCode":500,"headers":{"x-powered-by":"Express","access-control-allow-origin":"","content-type":"application/json; charset=utf-8","content-length":"52","etag":"W/"34-rlKccw1E+/fV8niQk4oFitDfPro""}},"err":{"type":"Error","message":"failed with status code 500","stack":"Error: failed with status code 500\n at onResFinished (/Users/sunrabbit/Desktop/wrtn/github/connector-hive/node_modules/pino-http/logger.js:115:39)\n at ServerResponse.onResponseComplete (/Users/sunrabbit/Desktop/wrtn/github/connector-hive/node_modules/pino-http/logger.js:178:14)\n at ServerResponse.emit (node:events:530:35)\n at onFinish (node:_http_outgoing:1077:10)\n at callback (node:internal/streams/writable:766:21)\n at afterWrite (node:internal/streams/writable:710:5)\n at afterWriteTick (node:internal/streams/writable:696:10)\n at processTicksAndRejections (node:internal/process/task_queues:89:21)"},"responseTime":2002,"msg":"request errored"}
{"level":30,"time":1741758370459,"pid":22500,"hostname":"sunrabbitui-MacBookPro-2.local","req":{"id":2113,"method":"POST","url":"/application-versions/by-ids/e6242777-8f6e-4ff1-b60e-cb7d084317e0/connectors","query":{},"params":{"path":["application-versions","by-ids","e6242777-8f6e-4ff1-b60e-cb7d084317e0","connectors"]},"headers":{"host":"localhost:37001","connection":"keep-alive","content-type":"application/json","accept":"/","accept-language":"","sec-fetch-mode":"cors","user-agent":"node","accept-encoding":"gzip, deflate","content-length":"876"},"remoteAddress":"127.0.0.1","remotePort":49710},"res":{"statusCode":500,"headers":{"x-powered-by":"Express","access-control-allow-origin":"","content-type":"application/json; charset=utf-8","content-length":"52","etag":"W/"34-rlKccw1E+/fV8niQk4oFitDfPro""}},"err":{"type":"Error","message":"failed with status code 500","stack":"Error: failed with status code 500\n at onResFinished (/Users/sunrabbit/Desktop/wrtn/github/connector-hive/node_modules/pino-http/logger.js:115:39)\n at ServerResponse.onResponseComplete (/Users/sunrabbit/Desktop/wrtn/github/connector-hive/node_modules/pino-http/logger.js:178:14)\n at ServerResponse.emit (node:events:530:35)\n at onFinish (node:_http_outgoing:1077:10)\n at callback (node:internal/streams/writable:766:21)\n at afterWrite (node:internal/streams/writable:710:5)\n at afterWriteTick (node:internal/streams/writable:696:10)\n at processTicksAndRejections (node:internal/process/task_queues:89:21)"},"responseTime":2001,"msg":"request errored"}