Ask HN: Advice on local efficient analogical retrieval?

So.. I've been running my own archive of conversations, voice recordings, documents, and etc for AI agents (mostly Claude Code) for past 6 month. Currently, when i ask or it answers something it runs hook that checks previous conversations, lists up potential related conversations. The intention is not only to retreive relative memories, but also to be able to connect 2 or more conversations that looks irrelevant but extract some kind of pattern or insight from it. In other words, I want my mode

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Coding
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Stack
Anthropic