feat: add You.com as a search backend#151
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Add YouComSearch, a new SearchSource implementation that calls the You.com Search API (POST https://api.you.com/v1/agents/search) and maps results/images into MemFree's TextSource/ImageSource shapes. You.com is selectable via the existing (previously unused) `engines` option on SearchOptions: pass `engines: ['youcom']` to getSearchEngine to use it instead of the default Serper backend. Default behavior is unchanged. - Add YDC_API_KEY env var (lib/env.ts, env-example) - Register You.com in getSearchEngine (lib/search/search.ts) - Add YouComSearch class (lib/search/youcom.ts) - Add unit tests (lib/search/tests/youcom.test.ts) - Add moduleNameMapper for @/ alias to jest.config.js so path-aliased runtime imports resolve under jest
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What
Adds You.com Search API as a selectable web search backend in MemFree, alongside the existing Serper (Google) and Exa backends.
Why
MemFree supports multiple search engines (Google, Exa, Vector) and CONTRIBUTING.md explicitly invites integrating additional search engines. You.com offers a free tier (100 searches/day, IP-based, no livecrawl) and returns web results + images, making it a natural drop-in alternative web backend.
How
YouComSearchclass (frontend/lib/search/youcom.ts) implementing the existingSearchSourceinterface. It callsPOST https://api.you.com/v1/agents/searchwith theX-API-Keyheader (fromYDC_API_KEY), then mapsresults→TextSource[]andimages→ImageSource[]. It reuses the existingfetchWithTimeouthelper andlogError, mirroringSerperSearch.getSearchEngine(frontend/lib/search/search.ts) via theenginesoption that was already declared onSearchOptionsbut unused. Passingengines: ['youcom']selects You.com; default behavior is unchanged (Serper remains the default for theALL/TWEETcategories, Exa forACADEMIC).YDC_API_KEYtofrontend/lib/env.tsandfrontend/env-example.moduleNameMapperfor the@/path alias tojest.config.jsso path-aliased runtime imports resolve under Jest (previously only type-only@/imports worked because they were erased during transform).frontend/lib/search/tests/youcom.test.ts) covering the request shape/response mapping and the error path.API key
Uses
YDC_API_KEY(the convention used across You.com's own docs and SDKs). Get a free key at https://api.you.com. Optional — if unset, the backend returns an empty result and logs the error, the same way Serper/Exa behave without keys.Testing
cd frontend npx jest lib/search/tests/youcom.test.tsBoth tests pass:
The pre-existing test suite (
local-history,local-limit) is unaffected; the one pre-existing failure inlocal-history.test.tspredates this change.Backward compatibility
No changes to default search behavior. You.com is opt-in via the
enginesoption, so existing users see no difference unless they explicitly select it.