v0.52.2

Fixed — a paid image could be lost on the Solana wallet rail

blockrun_image on Solana sent one POST and never polled. Past the gateway's
~30s inline window the route answers 202 { id, poll_url } instead of the
image, so the tool returned "No image URL in response" — and the charge
stood, because Solana settles at submit and cannot settle after a long render
(a signed transaction expires with its blockhash). The user paid and got
nothing.

Observed live on 2026-09-29: google/nano-banana-pro at 4096x4096 booked
$0.1575 and returned no image. The same defect was fixed on the account rail in
#140; the Solana wallet rail was never moved across. It now uses
solanaPaidAsyncPost — the helper video and music already use, which handles
the inline 200 and the 202 alike and re-signs each poll with a fresh blockhash.

Fixed — an edge 5xx on a Solana submit is no longer reported as free

solanaPaidAsyncPost marked the payment tracker answered as soon as the submit
response arrived, including a 502/503/504 from the edge. On this rail the submit
is the paid request, so an origin that never answered may still have settled
it — and the tool told the user "temporary API issue, try again" on a charge
that already stood. An edge status is no longer treated as the origin's verdict;
the tracker stays armed and the tool books it as a precaution. Applies to video
and music as well.

All notable changes to BlockRun MCP will be documented in this file.