Bitcoin Core returns the -28 warmup error ('Loading block index',
'Verifying blocks', 'Starting network threads') as an HTTP 200 response
with a JSON-RPC error body. _process_response only classified errors on
the non-200 path and passed a 200 body through unchanged, so the result
had an 'error' key but no 'status' key. Callers doing
'raise HTTPException(result["status"], ...)' then crashed with
KeyError: 'status' instead of HTTPException(425), so the startup
warmup-retry loop in initialize_bitcoin_repo never engaged and the API
(and login) failed while bitcoind was still warming up.
Same root cause, different -28 warmup message.
Fixes#287Fixes#285
Normalize any JSON-RPC error to an {error, status} dict regardless of the
HTTP status, mapping the warmup messages to 425 TOO_EARLY as before.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
