feat: webview api docs

[RohitKushvaha01]

Docs for Acode-Foundation/Acode#2525

[greptile-apps]

Greptile Summary

Adds documentation for Acode's WebView API.

• Adds the WebView page to the Advanced APIs sidebar.
• Documents creation options, content loading, messaging, events, lifecycle behavior, security restrictions, and usage examples.

Confidence Score: 4/5

The PR appears safe to merge, with a non-blocking documentation-example cleanup issue that should be corrected to avoid teaching resource-leaking usage.

The sidebar route and page structure are consistent, but the headless example contradicts the documented cleanup requirement by destroying its WebView only after successful message delivery.

Files Needing Attention: docs/advanced-apis/webview.md

Important Files Changed

Filename	Overview
.vitepress/config.mts	Adds a sidebar entry whose route correctly corresponds to the new WebView documentation page.
docs/advanced-apis/webview.md	Adds comprehensive WebView API documentation, but the headless example does not guarantee the required cleanup on failure paths.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Create WebView] --> B{Mode}
    B -->|fullscreen| C[Show immediately or defer]
    B -->|hidden| D[Run headlessly]
    C --> E[Load URL or HTML]
    D --> E
    E --> F[Evaluate, message, and handle events]
    F --> G{Still needed?}
    G -->|yes| F
    G -->|no or error| H[Destroy and release resources]

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_{Reviews (1): Last reviewed commit: "feat: webview api docs" | Re-trigger Greptile}