feat(rust): Dynamic PVP's zones on the feed and the map (PLAN_REDESIGNS §14.3.3)

Stage 4 of the §14.3 integration plan, on protocol 14 (docs
rust-link/PROTOCOL.md §20.7).

- pvp.zone.created is a public kind, pvp.zone.deleted a staff kind. Each row
  is read per viewer by the new dynamicPvp.js: grid for everyone, the event's
  name only for Dynamic PVP's own vanilla events, position and zone id for
  staff only.
- The feed's world filter carries the opening: "A PvP zone opened around the
  downed patrol helicopter · G7 · for 10 min". It names nobody.
- The map gains a fifth layer, `pvp` (PvP zones), public by default with its
  own audience in Admin → Rust visibility, drawn as a red ring with its
  event's name.
- Server settings' plugin line names Dynamic PVP; the swagger schemas and
  route descriptions carry the layer and the integration (fragment
  regenerated); ci/bundle.json ships dynamicPvp.js; README lists it.

Tests: server 611/611 (dynamicPvp.test.js new, catalogue and map extended)
and every check; client 89/89 (feed and map tooltip), build and externals.

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

client/test/mapEvents.test.js

@@ -6,7 +6,9 @@
 import test from 'node:test'
 import assert from 'node:assert/strict'
 
-import { eventTip, isBoss, titlesFrom, unknownRuns } from '../src/lib/mapEvents.js'
+import { createRequire } from 'node:module'
+
+import { eventTip, isBoss, pvpTip, PVP_NAMES, titlesFrom, unknownRuns } from '../src/lib/mapEvents.js'
 
 const CALENDAR = {
   entries: [
@@ -47,3 +49,13 @@ test('a boss is an event boss or a world one', () => {
 test('the run ids still to look up', () => {
   assert.deepEqual(unknownRuns([{ runId: '41' }, { runId: '7' }, { runId: '7' }, {}], { 41: 'x' }), ['7'])
 })
+
+// Dynamic PVP's rings (PLAN_REDESIGNS §14.3.3): its own events by a plain name,
+// a monument's or an operator's as written, and nothing at all as just a zone.
+test('a Dynamic PVP ring says what it is around', () => {
+  assert.equal(pvpTip({ event: 'Helicopter' }), 'PvP zone · Patrol helicopter')
+  assert.equal(pvpTip({ event: 'Airfield' }), 'PvP zone · Airfield')
+  assert.equal(pvpTip({}), 'PvP zone')
+  const { GENERAL_EVENTS } = createRequire(import.meta.url)('../../server/dynamicPvp.js')
+  assert.deepEqual(Object.keys(PVP_NAMES).sort(), [...GENERAL_EVENTS].sort())
+})