Add genlocke list and detail pages

Add GET /genlockes and GET /genlockes/{id} endpoints with aggregate
encounter/death stats per leg, and a frontend list page at /genlockes
plus a detail page at /genlockes/:genlockeId showing progress timeline,
cumulative stats, configuration, retired families, and quick actions.
Update nav link to point to the list page instead of /genlockes/new.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/App.tsx

@@ -1,7 +1,7 @@
 import { Routes, Route, Navigate } from 'react-router-dom'
 import { Layout } from './components'
 import { AdminLayout } from './components/admin'
-import { Home, NewGenlocke, NewRun, RunList, RunEncounters, Stats } from './pages'
+import { GenlockeDetail, GenlockeList, Home, NewGenlocke, NewRun, RunList, RunEncounters, Stats } from './pages'
 import {
   AdminGames,
   AdminGameDetail,
@@ -19,7 +19,9 @@ function App() {
         <Route path="runs" element={<RunList />} />
         <Route path="runs/new" element={<NewRun />} />
         <Route path="runs/:runId" element={<RunEncounters />} />
+        <Route path="genlockes" element={<GenlockeList />} />
         <Route path="genlockes/new" element={<NewGenlocke />} />
+        <Route path="genlockes/:genlockeId" element={<GenlockeDetail />} />
         <Route path="stats" element={<Stats />} />
         <Route path="runs/:runId/encounters" element={<Navigate to=".." relative="path" replace />} />
         <Route path="admin" element={<AdminLayout />}>