sneak f55d216252 Phase 6 green: download and decrypt files to disk ...

downloadFile streams the encrypted body from the CDN, buffers it to
the 4 MiB + 17 encrypted chunk boundary, decrypts each chunk via
secretstream pull, and writes the concatenated plaintext to disk.
downloadThumbnail does the same for the thumbnail CDN.

4 unit tests (single-chunk, large single-chunk, filename fallback,
thumbnail) + live integration test that downloads a real 472 KB JPEG
from the dev account and verifies it lands on disk.

Uses mkdtempSync for temp directories (not manual timestamp paths).

2026-05-13 17:54:03 -07:00

4.1 KiB

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