[Feature] Add Gemini 3.0 image generation support

[dingyi222666]

This PR adds support for Gemini 3.0 image generation capabilities.

New Features

• Add support for Gemini 3.0 Pro Image Preview model's image generation feature
• Improve image generation model detection logic using generic 'image' keyword matching for better compatibility and future-proofing

Other Changes

• Update documentation in both English and Chinese to reflect Gemini 3.0 support
• Bump package version to 1.3.8

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

在Gemini适配器中调整了图像生成功能的启用条件。将imageGeneration的触发条件从精确匹配"gemini-2.5-flash-image"改为模糊匹配任何包含"image"子字符串的模型标识符。

Changes

聚合 / 文件	变更摘要
Gemini适配器模型配置更新 packages/adapter-gemini/src/utils.ts	扩展prepareModelConfig函数中imageGeneration的启用条件，从精确检查"gemini-2.5-flash-image"改为模式检查任何包含"image"子字符串的模型名称

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 分钟

• 单个文件中的条件判断逻辑修改
• 变更范围局限于字符串匹配规则的调整
• 无新增函数签名或复杂逻辑

Possibly related PRs

• [Feature] Add Gemini 3.0 thinking level and systemInstruction casing support #629: 同样修改了packages/adapter-gemini/src/utils.ts中的模型检测/prepareModelConfig逻辑，涉及图像模型识别功能

Poem

🐰 一根胡萝卜牵出千般景，
image字符启新梦，
模型识别更聪慧，
图像生成展身手，
条件宽松多包容。

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feat/gemini-3-image

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 76f150e and c0d9c97.

⛔ Files ignored due to path filters (3)

• packages/adapter-gemini/package.json is excluded by !**/*.json
• packages/adapter-gemini/src/locales/en-US.schema.yml is excluded by !**/*.yml
• packages/adapter-gemini/src/locales/zh-CN.schema.yml is excluded by !**/*.yml

📒 Files selected for processing (1)

• packages/adapter-gemini/src/utils.ts (1 hunks)

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[gemini-code-assist]

Summary of Changes

Hello @dingyi222666, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

此拉取请求旨在通过引入对 Gemini 3.0 图像生成功能的支持来增强系统的能力。它还通过采用更通用的匹配策略来改进图像生成模型的识别机制，确保了更好的可扩展性。此外，相关的文档和版本号也已更新，以反映这些新功能。

Highlights

• 支持 Gemini 3.0 图像生成: 此 PR 增加了对 Gemini 3.0 Pro Image Preview 模型的图像生成功能支持。
• 改进图像生成模型检测逻辑: 图像生成模型的检测逻辑已优化，现在使用通用的 'image' 关键字进行匹配，提高了未来模型的兼容性。
• 文档更新: 更新了中英文文档说明，以反映对 Gemini 3.0 图像生成功能的支持。
• 版本升级: 项目版本已从 1.3.7 升级到 1.3.8。

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[gemini-code-assist]

Code Review

本次 PR 主要添加了对 Gemini 3.0 图像生成的支持，并改进了模型检测逻辑。代码变更清晰，目的明确。我对图像生成模型的检测逻辑提出了一点建议，以使其更加健壮，避免未来可能出现的问题。其他部分的修改，如版本号和文档更新，看起来都是正确的。