refactor(feed): port refresh batch to Effect for concurrency and timeout
Replace the hand-rolled worker pool (mapWithConcurrency) with an Effect program (src/effects/feed-refresh.ts): Effect.forEach bounds in-flight fetches, Effect.timeout bounds each feed via the Clock service, and failures fold to null so a bad feed never fails the batch. Per-feed apply-as-it-lands is preserved — the apply callback runs inside each feed's own fiber, so there is no Promise.all barrier. Store boundary unchanged: refreshAllFeeds runs the program through Effect.runPromise, keeping runAutoDownload + flushPendingSave after the batch and isLoadingFeeds around it. Adds TestClock-driven tests (tests/feed-refresh-effect.test.ts) that pin concurrency, per-feed apply, timeout, and failure isolation without real 20s waits. Pins effect@^3 (V4 is in beta).
This commit is contained in:
