Function parse_encoded_send_view 

fn parse_encoded_send_view(raw: &str) -> Result<SendView>

Decode and parse the full-object JSON input into a [SendView].

The input may be base64-encoded JSON (legacy CLI behavior) or raw JSON (this CLI’s convenience). Real JSON text starts with { and contains characters outside the base64 alphabet, so decoding as base64 fails fast on raw JSON; when decoding fails (or the decoded bytes aren’t valid UTF-8) we fall back to treating the original string as the JSON text directly. Either way, JSON is parsed exactly once, so a deserialize failure (e.g. a missing required field) is always the real error — we never re-parse the encoded string as JSON and mask it behind a generic “expected value” message.