docs(IDE): add Eclipse Marketplace stuff and update installation steps

[pzhlkj6612]

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/cc: @xijing21

Summary by Sourcery

Update RuyiSDK IDE documentation to reflect Eclipse Marketplace-based plugin installation and clarify upgrade guidance for IDE and plugins.

Documentation:

• Document Eclipse Marketplace as the recommended way to install the RuyiSDK IDE Eclipse plugin, replacing the previous plugin repository instructions.
• Refresh IDE documentation wording and screenshots related to plugin installation and clarify workspace safety and upgrade recommendations for newer IDE and plugin versions.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates the RuyiSDK IDE documentation to direct users to install the Eclipse plugin via Eclipse Marketplace instead of the GitHub releases page, refreshes the associated screenshot, and clarifies wording around integrated IDE packaging and update behavior.

Flow diagram for updated RuyiSDK IDE and plugin update behavior

flowchart TD
  A[Start with installed RuyiSDK IDE] --> B[Launch new IDE version or update RuyiSDK plugin]
  B --> C[Select existing workspace]
  C --> D[Continue development]
  D --> E[Benefit from latest bug fixes and new features]

Loading

File-Level Changes

Change	Details	Files
Update plugin installation instructions to use Eclipse Marketplace instead of direct GitHub release link, and refresh related wording and screenshot.	Change plugin installation link from the GitHub releases/tag/continuous page to the Eclipse Marketplace listing for the RuyiSDK plugin. Replace the old plugin installation screenshot with a new screenshot showing the RuyiSDK entry in Eclipse Marketplace. Tweak wording to say a more convenient installation method is coming, removing mention of "使用方式" to focus on installation only.	IDE/index.md
Clarify update behavior to cover both IDE and plugin updates and strengthen recommendation to stay on the latest IDE version for bug fixes and new features.	Extend the update note to mention both starting a new IDE version and updating the RuyiSDK plugin while reassuring users they can keep using the same workspace. Adjust wording to emphasize that the docs are continuously updated and recommend always using the latest RuyiSDK IDE version for bug fixes and new features.	IDE/index.md

Possibly linked issues

• #0: PR updates IDE main plugin installation section to new Eclipse Marketplace flow, directly addressing the documentation gap described

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[sourcery-ai]

Hey - I've found 1 issue, and left some high level feedback:

• Consider formatting the Eclipse Marketplace URL as a proper Markdown link with descriptive text instead of a bare URL to improve readability and accessibility.
• Double-check that the new screenshot filename image/eclipse-marketplace-ruyisdk.jpg exists in the repo and matches the actual file name and path to avoid broken images in the rendered docs.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- Consider formatting the Eclipse Marketplace URL as a proper Markdown link with descriptive text instead of a bare URL to improve readability and accessibility.
- Double-check that the new screenshot filename `image/eclipse-marketplace-ruyisdk.jpg` exists in the repo and matches the actual file name and path to avoid broken images in the rendered docs.

## Individual Comments

### Comment 1
<location> `IDE/index.md:37` </location>
<code_context>
+![eclipse-marketplace-ruyisdk](image/eclipse-marketplace-ruyisdk.jpg)

-目前我们正在完善整合了插件的 RuyiSDK IDE 工程，将很快提供更加便捷的安装和使用方式。
+目前我们正在完善整合了插件的 RuyiSDK IDE 工程，将很快提供更加便捷的安装方式。

 ## 案例
</code_context>

<issue_to_address>
**suggestion (typo):** “正在完善整合了插件的”这一结构略显别扭，可考虑优化表述以提高可读性。

这句话语法虽无误，但读起来略显拗口。建议改为“正在完善已整合插件的 RuyiSDK IDE 工程”或“正在完善集成插件的 RuyiSDK IDE 工程”，表达会更自然。

```suggestion
目前我们正在完善集成插件的 RuyiSDK IDE 工程，将很快提供更加便捷的安装方式。
```
</issue_to_address>

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[pzhlkj6612]

The last successful build was based on https://github.com/ruyisdk/ruyisdk-website/tree/f779e7677e35e5b23d7be2f027fe906ae7abe304. Now the website is using pnpm and we should be waiting for #130 to be merged.