Slice 1 polish: archive dormant code, merge work-os into primitives, add futures

- Archive dormant apps (daemon, desktop, native, tui) and superseded
  packages/server into repos/ for reference
- Archive 21 dead web components (chat page shell, work-os cluster, strays)
  into repos/web/; keep reused message-rendering primitives in components/chat
- Merge @code/work-os into @code/primitives; work.ts absorbed via ./work
  subpath and barrel export; update all four importers
- Add docs/futures.md tracking audio/video (blocked at Flue + provider),
  web layout cleanup, and message rendering quality
- Repoint dev:zopu script to @code/agents (the live Flue server)
- Note repos/ reference-code convention in AGENTS.md

repos/web/components/chat/chat-header.tsx

@@ -0,0 +1,11 @@
+import { MobileChatHeader } from "@code/ui/components/mobile-chat";
+
+import { STATUS_COPY } from "@/lib/chat/constants";
+import type { ChatHeaderProps } from "@/lib/chat/types";
+
+export const ChatHeader = ({ status }: ChatHeaderProps) => (
+  <MobileChatHeader
+    active={status !== "connecting" && status !== "error"}
+    statusLabel={STATUS_COPY[status]}
+  />
+);