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/layouts/bots/(partials)/rail-workspaces-section.tsx

@@ -0,0 +1,41 @@
+import { useContext } from "react";
+import Span from "@moduletrace/twui/layout/Span";
+import type { WorkspaceWithActivity } from "@/src/types";
+import { AddFlowContext } from "../(data)/add-flow-context";
+import RailSectionAddButton from "./rail-section-add-button";
+import RailSectionLabel from "./rail-section-label";
+import WorkspaceRow from "./workspace-row";
+
+type Props = {
+    workspaces: WorkspaceWithActivity[];
+    selected_id?: number;
+};
+
+/**
+ * The user's workspaces, with a "+" to create one.
+ */
+export default function RailWorkspacesSection({ workspaces, selected_id }: Props) {
+    const { openForm } = useContext(AddFlowContext);
+
+    return (
+        <>
+            <RailSectionLabel
+                title="Workspaces"
+                action={
+                    <RailSectionAddButton
+                        title="Create a workspace"
+                        onClick={() => openForm({ kind: "workspace" })}
+                    />
+                }
+            />
+            {workspaces.map((workspace) => (
+                <WorkspaceRow key={workspace.id} workspace={workspace} selected={workspace.id == selected_id} />
+            ))}
+            {workspaces.length ? null : (
+                <Span className="hidden lg:block px-3 py-2 text-[13px] leading-[18px] text-ink-secondary">
+                    No workspaces yet. A workspace keeps a project's context, bots and computers together.
+                </Span>
+            )}
+        </>
+    );
+}