Tool calls

let running = self.sim.answer.is_streaming();
let read = Progressive::complete(
    ToolInvocation::new("read-pricing", "read_file")
        .summary("pricing.md")
        .input("{\n  \"path\": \"pricing.md\",\n  \"range\": [1, 214]\n}")
        .output(
            "Read **214 lines**.\n\n| Supplier | Unit cost | Tier |\n|---|---|---|\n| Alpenrose Dairy | $3.12 | 500+ |\n| Tillamook | $3.36 | 500+ |",
        )
        .elapsed(Duration::from_millis(340)),
);
let search_call = ToolInvocation::new("search-suppliers", "web_search")
    .summary("alpenrose wholesale pricing")
    .icon(IconName::Globe)
    .input("{\n  \"query\": \"alpenrose wholesale pricing\",\n  \"limit\": 3\n}");
let search = if running {
    Progressive::running(search_call)
} else {
    Progressive::complete(
        search_call
            .output(
                "3 results — alpenrose.com, dairyreport.org, nwfoodtrade.com",
            )
            .elapsed(Duration::from_millis(1800)),
    )
};
let email = Progressive::pending(
    ToolInvocation::new("send-confirmations", "send_email")
        .summary("3 suppliers")
        .input(
            "{\n  \"to\": [\"orders@alpenrose.com\", \"sales@tillamook.com\"],\n  \"subject\": \"Order confirmation — week 35\"\n}",
        )
        .approval(self.tool_approval),
);
let failed = Progressive::failed(
    ToolInvocation::new("query-prices", "query_db")
        .summary("prices-db")
        .input("SELECT unit_cost FROM prices WHERE week = 35")
        .input_language("sql")
        .elapsed(Duration::from_millis(2100)),
    "Connection timed out after 2s",
);
let configure = |mut call: ToolCall, id: &str| {
    if let Some(open) = self.tool_call_open.get(id) {
        call = call.open(*open);
    }
    call
};
let mut group = ToolGroup::new("tool-group").count(2).active(running);
if let Some(open) = self.tool_group_open {
    group = group.open(open);
}
v_flex()
    .gap_4()
    .child(
        group
            .on_event(cx.listener(|this, event: &ToolGroupEvent, _, cx| {
                let ToolGroupEvent::Toggled { open, .. } = event;
                this.tool_group_open = Some(*open);
                cx.notify();
            }))
            .child(
                configure(ToolCall::new(&read), "read-pricing").on_event(
                    cx.listener(Self::handle_tool_call_event),
                ),
            )
            .child(
                configure(ToolCall::new(&search), "search-suppliers")
                    .on_event(cx.listener(Self::handle_tool_call_event)),
            ),
    )
    .child(
        configure(ToolCall::new(&email), "send-confirmations")
            .on_event(cx.listener(Self::handle_tool_call_event)),
    )
    .child(
        configure(ToolCall::new(&failed), "query-prices")
            .on_event(cx.listener(Self::handle_tool_call_event)),
    )