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-see-all-row.tsx

@@ -0,0 +1,42 @@
+import Button from "@moduletrace/twui/layout/Button";
+import Row from "@moduletrace/twui/layout/Row";
+import Span from "@moduletrace/twui/layout/Span";
+import { Ellipsis } from "lucide-react";
+import { AppData } from "@/src/data/app-data";
+import type { BotWithLastMessage } from "@/src/types";
+import RailSeeAllStone from "./rail-see-all-stone";
+
+type Props = {
+    /**
+     * The bots the rail doesn't list.
+     */
+    hidden: BotWithLastMessage[];
+    label: string;
+    onOpen: () => void;
+};
+
+/**
+ * Under the listed bots: a few stones of the ones that aren't listed and
+ * "See all bots", which opens them all. An ellipsis when the rail
+ * collapses.
+ */
+export default function RailSeeAllRow({ hidden, label, onOpen }: Props) {
+    return (
+        <Button
+            title={label}
+            type="button"
+            variant="ghost"
+            color="text"
+            onClick={onOpen}
+            className="flex shrink-0 h-10 w-full items-center justify-center lg:justify-start gap-3! rounded-default px-1! lg:px-3! text-ink-secondary dark:text-ink-secondary hover:text-ink hover:dark:text-ink hover:bg-sunken hover:dark:bg-sunken transition-colors duration-[var(--m-fast)] focus-visible:ring-2 focus-visible:ring-ink"
+        >
+            <Ellipsis size={18} aria-hidden className="lg:hidden" />
+            <Row className="hidden lg:flex shrink-0 gap-1! flex-nowrap items-center">
+                {hidden.slice(0, AppData.RailSeeAllStones).map((bot) => (
+                    <RailSeeAllStone key={bot.id} bot={bot} />
+                ))}
+            </Row>
+            <Span className="hidden lg:inline text-[13px] font-bold leading-4">{label}</Span>
+        </Button>
+    );
+}