fix: auto-register image-capable config providers (#51418) (thanks @xydt-610)

CHANGELOG.md

@@ -36,6 +36,7 @@ Docs: https://docs.openclaw.ai
 - MiniMax: advertise image input on bundled `MiniMax-M2.7` and `MiniMax-M2.7-highspeed` model definitions so image-capable flows can route through the M2.7 family correctly. (#54843) Thanks @MerlinMiao88888888.
 - Agents/exec approvals: let `exec-approvals.json` agent security override stricter gateway tool defaults so approved subagents can use `security: "full"` without falling back to allowlist enforcement again. (#60310) Thanks @lml2468.
 - Tasks/maintenance: mark stale cron runs and CLI tasks backed only by long-lived chat sessions as lost again so task cleanup does not keep dead work alive indefinitely. (#60310) Thanks @lml2468.
+- Media understanding: auto-register image-capable config providers for vision routing, so custom GLM-style provider ids with image models stop failing with “no media-understanding provider registered”. (#51418) Thanks @xydt-610.
 - Providers/OpenAI: preserve native `reasoning.effort: "none"` and strict tool schemas on direct OpenAI-family endpoints, keep compat routes on compat shaping, fix Responses WebSocket warm-up behavior, keep stable session and turn metadata, and fall back more gracefully after early WebSocket failures.
 - Providers/OpenAI Codex: split native `contextWindow` from runtime `contextTokens`, keep the default effective cap at `272000`, and expose a per-model `contextTokens` override on `models.providers.*.models[]`.
 - Providers/compat: stop forcing OpenAI-only defaults on proxy and custom OpenAI-compatible routes, preserve native vendor-specific reasoning/tool/streaming behavior across Anthropic-compatible, Moonshot, Mistral, ModelStudio, OpenRouter, xAI, and Z.ai endpoints, and route GitHub Copilot Claude models through Anthropic Messages instead of OpenAI Responses.