[Feature] Paper Search and Storage

[CJBshuosi]

Summary

Implement papers search and "save" storage funcations

Area

Backend API

Problem Statement

1.当前系统只实现了research页面的论文搜集功能，没有和papers library连接起来，无法点击“save”存储论文。
2.论文搜集只在semantic scholar开源数据搜集

Proposed Solution

1.增加两个开源数据集 ArxivHarvester, and OpenAlexHarvester
2.实现点击“save”存储论文
https://fcn4hyvizoz8.feishu.cn/wiki/D8RMwUYiEiP3vXkqyEScgde6nre

Task Checklist

No response

Test Plan

No response

Related Links

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[jerry609]

Completed: save/library flow already landed in research APIs + UI, and this commit adds OpenAlex as a new ingest/search source alongside arXiv/hf/papers.cool.