feat(rust): chat titles, BetterChat group styles, the voice and popups (phase 17)

PLAN.md §33, D134-D143. Protocol 12.

- Chat titles (D135-D137): per-server rules (stat, top N, text, colour)
  that rank the current wipe, and a mode (first | all | up to N). Worked
  out once in model/titles and read three ways: pushed whole to the game by
  a new titleSync loop (on change, restart or wipe), and on every
  leaderboard row as `titles`. Admin: PUT /servers/:id/titles.
- Group styles (D138, D139): a site group may carry all twelve BetterChat
  fields (rust_perm_group_chat). They ride perm.sync with `expect` from the
  pushed ledger, which gains a value column; a field changed in game is a
  `chat-field` drift row with the game's value, adopted into the style or
  put back. A withdrawn style is one `chat-group` retirement, never for
  `default`, cleared from the ledger only once BetterChat removed it.
- The voice (D140): one fleet setting naming a styled group; news and
  rust.announce chat lines carry its format and the plugin says them with
  no sender. Admin: GET/PUT /voice.
- Popups (D141, D142): rust.announce gains `delivery` (still version 1,
  from rust.options.delivery); each server gains news_delivery beside the
  news switch; `popup-unavailable` is not retried.
- GET /servers/:id/integrations reads, live, which optional mods a server
  has loaded. README lists BetterChat and PopupNotifications as optional.

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

server/router/public/rust.controller.js

@@ -17,6 +17,7 @@ const map = require('../../model/map/map.model')
 const mapDb = require('../../model/map/map.db')
 const mapLive = require('../../mapLive')
 const servers = require('../../model/servers/servers.model')
+const titles = require('../../model/titles/titles.model')
 const visibility = require('../../model/visibility/visibility.model')
 
 const log = core.logger('public')
@@ -105,15 +106,23 @@ async function listEvents(req, res) {
 async function listLeaderboard(req, res) {
   try {
     const presence = await visibility.canSeePresence(req, req.params.id)
-    perViewer(res)
-    res.json({
-      leaderboard: await events.leaderboard({
+    const [rows, held] = await Promise.all([
+      events.leaderboard({
         serverId: req.params.id,
         wipeId: req.query.wipe || null,
         sort: req.query.sort,
         limit: req.query.limit,
         presence: presence.visible,
       }),
+      titles.currentFor(req.params.id),
+    ])
+    perViewer(res)
+    res.json({
+      // D137: the titles each player holds NOW — the same ones, after the same
+      // mode, that the game shows. They rank the current wipe whichever wipe
+      // this page is showing, because a title is what a player is, not what a
+      // past wipe was.
+      leaderboard: rows.map((row) => ({ ...row, titles: held.get(row.steamId) || [] })),
     })
   } catch (err) {
     log.error('failed to read the leaderboard', { server: req.params.id, error: err.message })