Web Shell Plugin Shadow Surfaces

Goal

Make shadowDom={{ plugins: true }} isolate every plugin-management page, regardless of whether it was opened from the unified Plugins navigation or a slash-command compatibility route.

Surfaces

The plugin Shadow DOM boundary applies to these inline panel IDs:

• plugins
• extensions
• mcp
• skills
• agents

agents is included for compatibility with the AgentsManagerPage and AgentCreatePage introduced by PR #7572. The create page is rendered inside the agents manager, so both pages share the same boundary.

Settings, daemon status, and session overview remain in the Light DOM. Portal-based UI remains controlled independently by shadowDom.portals.

Implementation

Use one boundary around the inline panel body and enable it only for the plugin-management panel IDs. This preserves a single rendering path and keeps the legacy slash routes consistent with the unified Plugins page.