[Feature]: Let an MCP client or script know when a recording finishes #1188

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Is your feature request related to a problem?

I edit demo recordings with Claude Code through the in-app MCP server (trims, zooms, labels). Nothing tells the agent that a take has ended, so I start it by hand. My workaround is to watch the projects folder for a new proj_*.openscreen file. That depends on the storage layout, which on the Windows Store install sits under Packages\...\LocalCache. It also can't tell a finished recording from an imported project.

Describe the solution you'd like

Either of these would work:

1. A setting under AI settings, "After a recording, run:", with a command that receives the new project's id and path.
2. An MCP notification to connected clients when a take is saved and opened in the editor, carrying the projectId. Or a tool such as waitForRecording that returns once the user stops a take from the recording bar.

Describe alternatives you've considered

• Watching the projects folder, as above.
• Having the agent drive startRecording/stopRecording itself. That works, but it takes the Record button away from the person recording.

Additional context

OpenScreen 2.0.0 (Microsoft Store package), Windows 11, in-app MCP server with MCP edits on. Related to #1180, but this asks for an event rather than tool coverage.

Drafted with Claude Code; reviewed by me.