claude: standing convention — post operator-facing links to the Booth link board

Any URL handed to the operator that is worth more than the next thirty
seconds also goes on the standing link board via `booth link`, in the
same turn it is mentioned, in addition to appearing in the reply.

Links in chat drown in terminal scrollback; the board is a kept booth
(a .forever sentinel exempts it from the Booth's 24h sweep) rendered in
its own lane, so it outlives the session that produced it. Includes the
noise floor: if he would not click it a week from now, it stays off.

home_root/.claude/CLAUDE.md

@@ -544,8 +544,34 @@ note says otherwise. On other boxes, check first.)
   No auth — LAN/WG-internal + ephemeral, so don't drop secrets in a booth.
   Reach for it instead of describing results in prose when a picture, clip, or
   side-by-side would land faster. Code + helper CLI: eshpfi
-  `services/booth/` (`scripts/booth {new|add|url|ls|rm}`); user-level systemd
-  on nh3-dev (`systemctl --user status booth.service`).
+  `services/booth/` (`scripts/booth {new|add|url|ls|rm|keep|unkeep|link}`);
+  user-level systemd on nh3-dev (`systemctl --user status booth.service`).
+
+  **STANDING CONVENTION (operator, 2026-08-19) — POST EVERY OPERATOR-FACING
+  LINK TO THE BOOTH LINK BOARD.** Any URL you hand the operator that is worth
+  more than the next thirty seconds — a booth of renders, a PR, an issue, a
+  newly-deployed service, an artifact page, a dashboard — **also** goes on the
+  standing link board, in the same turn you mention it:
+
+  ```bash
+  booth link <url> "<short description>"     # on nh3-dev
+  ssh nh3-dev 'booth link <url> "<desc>"'    # from anywhere else
+  ```
+
+  Still put the link in your reply — this is *in addition to*, not instead of.
+  The reason is simple and the operator raised it directly: links in chat drown
+  in terminal scrollback and are gone. The board is a **kept** booth (a
+  `.forever` sentinel exempts it from the 24h sweep) rendered in its own lane at
+  the top of `http://10.100.10.50:8090/`, so it survives the session that
+  produced it. Entries carry provenance automatically (`ALTHING_HANDLE` or the
+  hostname, plus a timestamp), and the board is a plain markdown file the
+  operator prunes by hand — `booth unkeep links` or deleting the folder ends it.
+
+  Don't post noise: transient junk (a scratch path, a URL only meaningful for
+  the next two minutes) stays out. If you wouldn't expect him to click it a week
+  from now, it doesn't belong on the board. Any booth you want to outlive its
+  24h can be kept the same way (`booth keep <name>`), but keep that rare — the
+  ephemeral default is what makes the Booth cleanup-free.
 
 - **`secret` — Vaultwarden credential store (per dev box)** — a CLI for stashing
   and looking up secrets that shouldn't live in a git repo, backed by