feat(rust): the rewards — tally, kit reward, chat and the news leg (phase 13b, protocol 10)

Four event verbs and the announce leg, per PLAN.md §29:

- rust.participation.open / .collect: the plugin counts who takes part
  (seconds, kills or both, in a zone this run opened or the whole server)
  and collect files them as the run's participants, keyed by Steam id.
- rust.kit.entitle: the five recipient modes (D101), rows in the new
  rust_perm_run_grants (D84) unioned into the permission push, one extra
  use of the kit per reward as site-held credits on perm.sync (D103),
  and the rust.kit.entitled notice deferred from phase 10 (D64).
- rust.announce: one server or every server (D105).
- rust.chat announce leg, speaking only on servers whose new news switch
  is on (D104) - a card on Admin -> Rust visibility (D106).

Budgets rust.grants and rust.announcements; the kit source and four
fixed-choice sources (core has no enum param type). rust_perm_run_grants
carries core's idempotency key so a revert of a lost answer can find its
rows. Protocol 10.

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

server/swagger/doc.js

@@ -560,6 +560,24 @@ module.exports = {
               },
             },
           },
+          news: {
+            type: 'object',
+            description: 'Whether a published news post is also said in each server’s in-game chat. Off by default (D104).',
+            properties: {
+              servers: {
+                type: 'array',
+                items: {
+                  type: 'object',
+                  properties: {
+                    id: { type: 'string', example: 'main' },
+                    name: { type: 'string', example: 'Main · Vanilla' },
+                    enabled: { type: 'boolean', example: true },
+                    on: { type: 'boolean', example: false },
+                  },
+                },
+              },
+            },
+          },
         },
       },
       RustClanAudience: {
@@ -652,6 +670,12 @@ module.exports = {
             example: { main: 'public', pvp: null },
           },
           clanRoster: { $ref: '#/components/schemas/RustClanAudience' },
+          news: {
+            type: 'object',
+            description: 'A server id to whether a published news post is said in its in-game chat.',
+            additionalProperties: { type: 'boolean' },
+            example: { main: true },
+          },
         },
       },
       RustSidecarProbe: {