feat(rust): slash commands and the next wipe, server half (phase 16)

Five read-only commands registered with api.registerSlashCommands:
/status, /wipe, /top, /online and /clan (D126). Every refusal is private,
and any answer narrower than public (online names, a clan roster) goes
to the caller alone (D127). No command asks a sidecar.

The next wipe (D128, D130): six nullable columns on rust_servers, a pure
nextWipe(row, now) with the zone arithmetic through Intl, computed on
every read. The public server shape gains nextWipe; the admin shape
gains the stored schedule; PUT /admin/rust/servers/:id takes the six
fields and writes them only when wipeRule is present.

server/commands joins ci/bundle.json, which checkBundle caught.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01E14m6SuuY6i1vASFeGDBeY

server/commands/wipe.command.js

@@ -0,0 +1,38 @@
+// ── `/wipe [server]` — when it wipes next, and when it last did (D128) ──────
+//
+// Public: a wipe date is announced to bring players back. The next wipe is the
+// operator's schedule, computed on this read (`model/servers/nextWipe.js`); a
+// server with no schedule says so and shows only the last wipe it reported.
+
+const c = require('./common')
+
+function lines(server, now) {
+  return [
+    `Next: ${c.nextWipeText(server, now) || 'no schedule set'}`,
+    `Last: ${server.wipedAt ? c.when(server.wipedAt, now) : 'not reported yet'}`,
+  ].join('\n')
+}
+
+async function handler({ options }) {
+  const now = Date.now()
+  const picked = c.pickServer(await c.listServers(now), options && options.server)
+  const refusal = c.pickRefusal(picked)
+  if (refusal) return refusal
+
+  if (picked.server) {
+    return { title: `${picked.server.name} — wipes`, url: c.serverUrl(picked.server), text: lines(picked.server, now) }
+  }
+  return {
+    title: 'Wipes',
+    url: c.pageUrl('/rust'),
+    fields: picked.all.slice(0, 25).map((s) => ({ name: s.name, value: lines(s, now), inline: false })),
+  }
+}
+
+module.exports = {
+  name: 'wipe',
+  description: 'When a Rust server wipes next, and when it last wiped',
+  options: [{ name: 'server', type: 'string', description: 'Server name or id (all servers when left out)', required: false }],
+  access: 'everyone',
+  handler,
+}