✨ feat(code-review): add configurable model input

[lishuceo]

背景

共享 code-review workflow 把 --model opus 写死，consumer repo 想换 review 模型只能整段抄走 workflow（放弃复用）。这是 RFC 0001 Phase 1 里 model 参数的落地。

改动

• 新增 model input（required: false，default: opus）。
• --model opus → --model ${{ inputs.model || 'opus' }}。

|| 'opus' fallback 的必要性：该 workflow 同时被 pull_request 直接触发（review taptap/.github 自身 PR），此时 workflow_call 的 inputs 未填充，inputs.model 为空——fallback 保证直接触发时仍走 opus。

兼容性

完全向后兼容：所有现有 caller（未传 model）默认 opus，行为不变。

首个消费方

maker 将传 model: fable-5（见 taptap/maker 侧 PR）。合并顺序：本 PR 需先合入 main，maker 侧 PR 才能生效（否则 maker 传一个 workflow 尚不认识的 input 会导致校验失败）。

🤖 Generated with Claude Code

[greptile-apps]

Greptile Summary

这个 PR 为共享的 code-review workflow 新增了 model input，让 consumer repo 可以在调用时指定 Claude 模型（如 fable-5），同时保持对未传参 caller 的向后兼容性。

• 在 workflow_call inputs 中添加了 model 字段（type: string，required: false，default: opus），供 caller 按需传入模型名或完整模型 ID。
• 将 --model opus 替换为 --model ${{ inputs.model || 'opus' }}，其中 || 'opus' 是处理 pull_request 直接触发（此时 inputs 为空）所必须的 fallback，设计合理。

Confidence Score: 5/5

改动仅新增一个可选 input 并替换一处硬编码字符串，对现有调用方行为零影响，可安全合并。

model input 的 default 值与 || 'opus' fallback 覆盖了 workflow_call 和 pull_request 两种触发方式，双重保险逻辑无误。更改范围极小，无任何功能性退化风险。

无需特别关注的文件。

Important Files Changed

Filename	Overview
.github/workflows/code-review.yml	新增 model input 并将硬编码的 --model opus 替换为 `--model ${{ inputs.model

Sequence Diagram

%%{init: {'theme': 'neutral'}}%%
sequenceDiagram
    participant PR as pull_request event
    participant CALL as workflow_call (e.g. taptap/maker)
    participant WF as code-review.yml
    participant Claude as claude-code-action

    PR->>WF: trigger (inputs not populated)
    WF->>WF: "inputs.model = ''"
    WF->>Claude: "--model opus (fallback via || 'opus')"

    CALL->>WF: trigger with model: fable-5
    WF->>WF: "inputs.model = 'fable-5'"
    WF->>Claude: --model fable-5

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%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
sequenceDiagram
    participant PR as pull_request event
    participant CALL as workflow_call (e.g. taptap/maker)
    participant WF as code-review.yml
    participant Claude as claude-code-action

    PR->>WF: trigger (inputs not populated)
    WF->>WF: "inputs.model = ''"
    WF->>Claude: "--model opus (fallback via || 'opus')"

    CALL->>WF: trigger with model: fable-5
    WF->>WF: "inputs.model = 'fable-5'"
    WF->>Claude: --model fable-5

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[Copilot]

Pull request overview

This PR enhances the shared code-review reusable workflow by making the Claude model configurable via a new workflow_call input, so consumer repositories can switch review models without duplicating the workflow.

Changes:

• Added a new model input to workflow_call inputs with default opus.
• Updated Claude invocation to use the configured model instead of a hardcoded opus.

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