Merge edge into feat/title-conditions: §3's zone presets

Two conflicts, both additive: schema.sql and purge.sql keep both phases'
tables. Swagger fragment (61 paths) and routes.manifest (67 routes)
regenerated against the pinned core; 455 server and 58 client tests pass.

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

client/src/api.js

@@ -208,6 +208,18 @@ export const adminVisibility = {
   save: (body) => req('/admin/rust/visibility', { method: 'PUT', body }),
 }
 
+// ── admin · zone presets (PLAN_REDESIGNS §3.1, D210) ───────────────────────
+//
+// An admin's named sets of ZoneManager flags and settings. `read` also carries
+// what each server's last hello said about ZoneManager and ZoneDomes, so the
+// page works while a server is off.
+export const adminZones = {
+  read: () => req('/admin/rust/zones'),
+  create: (body) => req('/admin/rust/zones/presets', { method: 'POST', body }),
+  update: (id, body) => req(`/admin/rust/zones/presets/${encodeURIComponent(id)}`, { method: 'PUT', body }),
+  remove: (id) => req(`/admin/rust/zones/presets/${encodeURIComponent(id)}`, { method: 'DELETE' }),
+}
+
 // ── admin · mod configuration (R18) ───────────────────────────────────────
 //
 // Every call here is a LIVE round trip to a game host, which makes this the only
@@ -288,6 +300,7 @@ export default {
   adminPermissions,
   adminConfig,
   adminVisibility,
+  adminZones,
   adminUserLinks,
   adminUserPermissions,
   BASE,