add NIP-29 groups to sidebar

docs/nip29-usage.md

@@ -198,7 +198,8 @@ cx.subscribe(&group, |this, group, event, cx| match event {
 
 The reads are all accessors: `key`, `metadata`, `members`, `admins`, `roles`,
 `participants`, `pins`, `membership`, `elsewhere`, `messages`, `loading`,
-`loading_more`, `oldest`, `refused`.
+`loading_more`, `oldest`, `refused`. `display_name` reads the group's name and
+falls back to its id; `display_image` is the picture, for a row or avatar.
 
 ### The read model
 
@@ -544,12 +545,10 @@ before they reach the consumer, so a replay cannot double-hydrate.
 
 ## Not wired up yet
 
-- **No screen consumes this crate yet.** The only references outside
-  `crates/nip29` are the two `nip29::init(cx)` calls. The group panel is built in
-  `crates/nip29_ui` (`GroupPanel`, which also owns the `chat::Message` row
-  rendering), but nothing opens it yet: the sidebar section, the join dialog and
-  their entry points are still to be built. `crates/workspace/src/panels/browse.rs`
-  is the stub for browsing.
+- **Browsing, details and administration are not built.** The sidebar's `Groups`
+  tab lists `GroupsRegistry::groups()`, opens a `GroupPanel`, and offers the
+  new-group and join dialogs, but `crates/workspace/src/panels/browse.rs` is still
+  a stub, and the group details, moderation and pin surfaces are still to be built.
 - **Remote deletions are not folded in.** A `9005` from another admin never reaches the
   standing REQ, so only our own accepted deletes evict the row.
 - **The LiveKit response shape is a guess.** The NIP names no fields, so