fix(xiaomi): pass thinking param to MiMo API

[zccyman]

Summary

Add a custom Xiaomi provider profile class that emits extra_body.thinking to control MiMo thinking mode. When the user configures reasoning_effort: none or otherwise disables reasoning, sends thinking: {type: "disabled"} to prevent unnecessary token consumption.

Closes #27325

Problem

Xiaomi MiMo provider used a bare ProviderProfile with no overrides — the thinking parameter was never passed in API requests. MiMo defaults to thinking=enabled, consuming tokens on every request regardless of user config. Settings like reasoning_effort: none had no effect on the actual API call.

Solution

Replace the bare ProviderProfile with a XiaomiProfile subclass that overrides build_api_kwargs_extras, following the same pattern used by KimiProfile:

• When reasoning_config.enabled is False → extra_body.thinking = {type: "disabled"}
• Otherwise → extra_body.thinking = {type: "enabled"}

Only 1 file changed (+45/-2).

Files Changed

#	File	Change
1	plugins/model-providers/xiaomi/__init__.py	+45/-2: add XiaomiProfile class with build_api_kwargs_extras override for thinking param

Test Results

94 passed (related provider profile + Xiaomi tests)
0 regressions

Design Decisions

• Follows Kimi pattern exactly — Kimi already uses the same extra_body.thinking approach via KimiProfile.build_api_kwargs_extras. Xiaomi uses the same OpenAI-compatible API format.
• Minimal diff — no changes to transport, no new params, no legacy path changes. Only the provider profile needed updating.

[teknium1]

Thanks for the focused Xiaomi provider fix. The premise remains valid on current main: plugins/model-providers/xiaomi/__init__.py:6 still creates a bare ProviderProfile, while agent/transports/chat_completions.py:580-611 invokes and merges profile-specific API extras.

Problems

• The implementation only disables thinking for reasoning_config["enabled"] is False. agent/agent_init.py:381 documents { "effort": "none" } as a disabling configuration, but this PR would default enabled to true and emit enabled thinking for that input.
• gh pr diff 27363 shows no Xiaomi tests. The repository has analogous Kimi profile coverage at tests/providers/test_provider_profiles.py:78-82 and transport coverage at tests/providers/test_profile_wiring.py:77-91.

Suggested changes

• Treat normalized effort == "none" as disabled alongside enabled is False.
• Add direct Xiaomi-profile and profile-path transport regression tests for both disable forms.

This is an automated hermes-sweeper review.