refactor image cache

crates/chat_ui/src/lib.rs

@@ -4,7 +4,7 @@ use std::sync::Arc;
 pub use actions::*;
 use anyhow::{Context as AnyhowContext, Error};
 use chat::{ChatRegistry, Message, RenderedMessage, Room, RoomEvent, SendReport, SendStatus};
-use common::TimestampExt;
+use common::{TimestampExt, coop_cache};
 use gpui::prelude::FluentBuilder;
 use gpui::{
     AnyElement, App, AppContext, ClipboardItem, Context, Entity, EventEmitter, FocusHandle,
@@ -1485,6 +1485,7 @@ impl Focusable for ChatPanel {
 impl Render for ChatPanel {
     fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
         v_flex()
+            .image_cache(coop_cache(self.id.clone(), 100))
             .on_action(cx.listener(Self::on_command))
             .size_full()
             .when(*self.subject_bar.read(cx), |this| {