URLs like https://nostr.build/i/nostr.build_<sha>.jpg embed a 64-char
hex in the filename but aren't BUD-01 Blossom blobs — the last path
segment must be exactly <sha256> or <sha256>.<ext>. The previous regex
matched the embedded hash and rewrote the request to the local cache
with xs=https://nostr.build/i, which 404s on miss because the real blob
lives at /i/nostr.build_<sha>.jpg, not /i/<sha>.
Switch both extraction sites (MediaUrlContentExt and the OkHttp
interceptor) to a matchEntire regex that anchors the sha at the start
of the segment with at most a .<ext> suffix.
Claude
62d97c6d82