Add workspaces, conversation sessions, app-managed computers and pictures

- Rail: Add icon with stacked form modals (bot, workspace, computer),
  coordinator, recent bots with "See all bots", Workspaces section, and
  a workspace mode listing only its crew
- Workspaces: page for context, bots (per-workspace instructions and
  memory), computers (default, link, unlink), models and delete;
  conversations scoped per bot per workspace
- Sessions: conversations split into searchable, reopenable sessions
  with carry-over summaries; sessions and new-session header icons
- Computers: created and provisioned over the docker socket, home dir
  kept at DATA_DIR/computers/<id> after delete; super admins only
- Models: workspace settings win over a bot's own, then the defaults
- Pictures for bots and workspaces; bots editable from the header
- Coordinator tools: update_workspace, set_bot_workspace_instructions

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/dict/bot-dict.ts

@@ -108,6 +108,24 @@ export const BotTaskStatuses = [
 
 export type BotTaskStatus = (typeof BotTaskStatuses)[number]["value"];
 
+/**
+ * A conversation (one bot, in its own chat or one workspace) is split into
+ * sessions so no single history grows without bound. One is active per
+ * conversation; closed ones can be browsed and reopened.
+ */
+export const BotSessionStatuses = [
+    {
+        title: "Active",
+        value: "active",
+    },
+    {
+        title: "Closed",
+        value: "closed",
+    },
+] as const;
+
+export type BotSessionStatus = (typeof BotSessionStatuses)[number]["value"];
+
 export const BotTaskStepStates = [
     {
         title: "Done",