Greptile Summary

This PR fixes a bug where the auto-reasoning-effort middleware incorrectly parsed Qwen model names ending in -max (e.g., qwen3.7-max, qwen/qwen3-max) as a base model plus a max reasoning-effort suffix, stripping the suffix and sending the wrong model name downstream.

• Adds an isQwenMaxModel guard called immediately after the effort is identified as "max", which strips any namespace prefix and checks for the qwen prefix; if matched, the model is left untouched.
• Adds two splitAutoReasoningEffortModel unit tests and one middleware integration test covering plain and namespaced Qwen-max model strings.

Confidence Score: 4/5

Safe to merge — the change is a narrowly scoped guard that only activates for Qwen model names ending in -max, leaving all other model handling untouched.

The fix is correct and well-tested for the reported cases. The only notable issue is a redundant HasSuffix check inside isQwenMaxModel that can never be false when the function is called, making that branch dead code — it does not affect correctness.

No files require special attention; both changed files are straightforward and the logic is easy to follow.

Important Files Changed

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[OnInboundLlmRequest] --> B{AutoReasoningEffort\nenabled?}
    B -- No --> Z[Return request unchanged]
    B -- Yes --> C[splitAutoReasoningEffortModel]
    C --> D{last dash exists\n& not trailing?}
    D -- No --> Z
    D -- Yes --> E{effort in\nsupportedEfforts?}
    E -- No --> Z
    E -- Yes --> F{effort == max &&\nisQwenMaxModel?}
    F -- Yes --> Z
    F -- No --> G{base model\nnot empty?}
    G -- No --> Z
    G -- Yes --> H[Set Model = base\nSet ReasoningEffort = effort]
    H --> I[Return modified request]

    subgraph isQwenMaxModel
        J[Lowercase + trim full string] --> K[Strip namespace prefix\nafter last slash]
        K --> L{HasPrefix qwen?}
        L -- Yes --> M[return true]
        L -- No --> N[return false]
    end

_{Reviews (1): Last reviewed commit: "fix: auto reasoning effort for qwen max,..." | Re-trigger Greptile}