Web client continuously refetches pending context summaries while idle #131

With a couple of idle session windows open, the web client makes continuous context?view=summary requests, causing very high CPU usage. Two idle windows issue around 600 requests every second

The responses for these requests look like this:

{
    "state": "pending",
    "snapshot_id": null,
    "captured_at": null,
    "provider": null,
    "model": null,
    "protocol": null,
    "context_window_tokens": null,
    "compaction": {
        "strategy": null,
        "status": "unknown",
        "source": null,
        "trigger_free_percent": null,
        "input_limit_tokens": null,
        "estimated_input_tokens": null,
        "provider_input_tokens": null,
        "provider_cached_input_tokens": null,
        "estimate_method": null,
        "before_items": null,
        "after_items": null
    },
    "sections": [],
    "reason": {
        "code": "context_pending",
        "detail": "runtime session has not prepared a provider request"
    }
}

I'd be happy to contribute a fix a bit later when I get a chance, if that would be helpful.