add trash panel and re-tag stale cached rooms

crates/workspace/src/sidebar/inbox.rs

@@ -173,14 +173,20 @@ impl Sidebar {
             .collect()
     }
 
-    /// The chat requests awaiting a response.
+    /// The chat requests awaiting a response, followed by the trash entry when
+    /// it holds messages that could not be decrypted.
     pub(super) fn requests_rows(&self, cx: &App) -> Vec<SidebarRow> {
-        ChatRegistry::global(cx)
-            .read(cx)
+        let chat = ChatRegistry::global(cx).read(cx);
+        let mut rows: Vec<SidebarRow> = chat
             .rooms(&RoomKind::Request, cx)
             .into_iter()
             .map(|room| SidebarRow::Room { room })
-            .collect()
+            .collect();
+
+        if chat.trashed_count(cx) > 0 {
+            rows.push(SidebarRow::Trash);
+        }
+        rows
     }
 
     /// The overlay with the create button and selection count.

crates/workspace/src/sidebar/list.rs

@@ -50,6 +50,8 @@ pub(super) struct RowsSignature {
     /// Kinds of the rooms held by the cache; a request can turn ongoing with
     /// no event or registry notify the sidebar can hear
     room_kinds: Vec<(u64, RoomKind)>,
+    /// Size of the undecryptable-messages trash, which no notify reaches
+    trashed: usize,
 }
 
 /// Read the id and kind of every room row held by the given cache.
@@ -81,9 +83,10 @@ impl Sidebar {
             ("sidebar-list", None)
         };
 
-        let request_count = ChatRegistry::global(cx)
-            .read(cx)
-            .count(&RoomKind::Request, cx);
+        let request_count = {
+            let chat = ChatRegistry::global(cx).read(cx);
+            chat.count(&RoomKind::Request, cx) + chat.trashed_count(cx)
+        };
 
         v_flex()
             .size_full()
@@ -218,6 +221,7 @@ impl Sidebar {
             pinned_rooms: AppSettings::get_pinned_rooms(cx),
             pinned_groups: AppSettings::get_pinned_groups(cx),
             room_kinds: room_signature(&self.rows, cx),
+            trashed: ChatRegistry::global(cx).read(cx).trashed_count(cx),
         };
 
         if self.rows_dirty || self.rows_signature != signature {

crates/workspace/src/sidebar/rows.rs

@@ -1,6 +1,6 @@
 use std::ops::Range;
 
-use chat::{Room, RoomKind};
+use chat::{ChatRegistry, Room, RoomKind};
 use common::TimestampExt;
 use gpui::prelude::FluentBuilder;
 use gpui::{
@@ -88,6 +88,8 @@ pub(super) enum SidebarRow {
     Message {
         hit: MessageHit,
     },
+    /// Entry point to the trash panel, shown under requests
+    Trash,
     /// A non-interactive label, such as a search results section.
     Heading(&'static str),
     Empty(&'static str),
@@ -411,6 +413,34 @@ impl Sidebar {
                             })
                             .into_any_element()
                     }
+                    SidebarRow::Trash => {
+                        let count = ChatRegistry::global(cx).read(cx).trashed_count(cx);
+                        let dock = self.dock.clone();
+
+                        Nav::new("sidebar-trash")
+                            .label("Trash")
+                            .text_sm()
+                            .when(!hide_avatar, |this| {
+                                this.prefix(Avatar::new(None).seed("trash").small())
+                            })
+                            .suffix(
+                                div()
+                                    .text_xs()
+                                    .text_color(cx.theme().muted_foreground)
+                                    .child(SharedString::from(count.to_string())),
+                            )
+                            .on_click(move |_event, window, cx| {
+                                let panel = chat_ui::trash::init(window, cx);
+                                crate::dock::add_panel_to(
+                                    &dock,
+                                    PanelHandle::new(panel),
+                                    DockPlacement::Center,
+                                    window,
+                                    cx,
+                                );
+                            })
+                            .into_any_element()
+                    }
                 };
                 // Keep a small gap between rows so selected rows read as pills.
                 div().pb_0p5().child(element).into_any_element()