fix: CI test failures — metadata key, cli console, docker env, vision order (#6294)

Fixes 9 test failures on current main, incorporating ideas from PR stack
#6219-#6222 by xinbenlv with corrections:

- model_metadata: sync HF context length key casing
  (minimaxai/minimax-m2.5 → MiniMaxAI/MiniMax-M2.5)

- cli.py: route quick command error output through self.console
  instead of creating a new ChatConsole() instance

- docker.py: explicit docker_forward_env entries now bypass the
  Hermes secret blocklist (intentional opt-in wins over generic filter)

- auxiliary_client: revert _read_main_provider() to simple
  provider.strip().lower() — the _normalize_aux_provider() call
  introduced in 5c03f2e7 stripped the custom: prefix, breaking
  named custom provider resolution

- auxiliary_client: flip vision auto-detection order to
  active provider → OpenRouter → Nous → stop (was OR → Nous → active)

- test: update vision priority test to match new order

Based on PR #6219-#6222 by xinbenlv.

tools/environments/docker.py

@@ -505,14 +505,17 @@ class DockerEnvironment(BaseEnvironment):
         # (dynamic from host process).  Forward values take precedence.
         exec_env: dict[str, str] = dict(self._env)
 
-        forward_keys = set(self._forward_env)
+        explicit_forward_keys = set(self._forward_env)
+        passthrough_keys: set[str] = set()
         try:
             from tools.env_passthrough import get_all_passthrough
-            forward_keys |= get_all_passthrough()
+            passthrough_keys = set(get_all_passthrough())
         except Exception:
             pass
-        # Strip Hermes-managed secrets so they never leak into the container.
-        forward_keys -= _HERMES_PROVIDER_ENV_BLOCKLIST
+        # Explicit docker_forward_env entries are an intentional opt-in and must
+        # win over the generic Hermes secret blocklist. Only implicit passthrough
+        # keys are filtered.
+        forward_keys = explicit_forward_keys | (passthrough_keys - _HERMES_PROVIDER_ENV_BLOCKLIST)
         hermes_env = _load_hermes_env_vars() if forward_keys else {}
         for key in sorted(forward_keys):
             value = os.getenv(key)