Adds the bucket-enumeration primitive the My Videos tab needs to find orphan and
missing files:
- s3 layer: ListObjectsV2Command wired into the SDK wrapper + a paginated
listObjects({ s3, bucket, prefix, maxKeys }) helper (follows continuation
tokens, bounded by maxKeys).
- r2Service.listVideoStorageObjects({ npub|pubkey }) — unlock-gated, lists under
the user's own u/<npub>/ prefix; returns { ok, reason, keys }. Body lives in
r2ServiceHelpers (with a shared buildProviderClient) so r2Service stays under
its file-size budget; ensureS3SdkLoaded is injectable via ctx for testing.
Tests + mutation-verified: never lists while locked (storage-locked, no call),
no-connection / missing-bucket gating, and unlocked listing is scoped to the
user's own u/<npub>/ prefix (empty-prefix mutation fails). Removing the lock gate
or widening the prefix each fail a scenario.
Build + full lint green (r2Service back under limit).
Co-Authored-By: Claude Opus 4.8 <[email protected]>
A 0-byte file produced a multipart upload with zero parts, which S3/R2 reject
with a cryptic CompleteMultipartUpload error. Guard file.size === 0 up front
with a clear message, before any S3 request is issued. Cloudflare-upload #4.
Test: tests/multipart-empty-file-guard.test.mjs.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
