feat: add direct URL routes for each game mode

Create dedicated routes for each Complement Race game mode:
- /games/complement-race/practice - Practice Mode (race to 20)
- /games/complement-race/sprint - Steam Sprint (60 second momentum)
- /games/complement-race/survival - Survival Mode (endless laps)

Each route uses ComplementRaceProvider with initialStyle prop to set
the game mode, allowing users to share direct links to specific modes.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/web/src/app/games/complement-race/practice/page.tsx

@@ -0,0 +1,15 @@
+'use client'
+
+import { PageWithNav } from '@/components/PageWithNav'
+import { ComplementRaceProvider } from '../context/ComplementRaceContext'
+import { ComplementRaceGame } from '../components/ComplementRaceGame'
+
+export default function PracticeModePage() {
+  return (
+    <PageWithNav navTitle="Practice Mode" navEmoji="🏁">
+      <ComplementRaceProvider initialStyle="practice">
+        <ComplementRaceGame />
+      </ComplementRaceProvider>
+    </PageWithNav>
+  )
+}

apps/web/src/app/games/complement-race/sprint/page.tsx

@@ -0,0 +1,15 @@
+'use client'
+
+import { PageWithNav } from '@/components/PageWithNav'
+import { ComplementRaceProvider } from '../context/ComplementRaceContext'
+import { ComplementRaceGame } from '../components/ComplementRaceGame'
+
+export default function SprintModePage() {
+  return (
+    <PageWithNav navTitle="Steam Sprint" navEmoji="🚂">
+      <ComplementRaceProvider initialStyle="sprint">
+        <ComplementRaceGame />
+      </ComplementRaceProvider>
+    </PageWithNav>
+  )
+}

apps/web/src/app/games/complement-race/survival/page.tsx

@@ -0,0 +1,15 @@
+'use client'
+
+import { PageWithNav } from '@/components/PageWithNav'
+import { ComplementRaceProvider } from '../context/ComplementRaceContext'
+import { ComplementRaceGame } from '../components/ComplementRaceGame'
+
+export default function SurvivalModePage() {
+  return (
+    <PageWithNav navTitle="Survival Mode" navEmoji="🔄">
+      <ComplementRaceProvider initialStyle="survival">
+        <ComplementRaceGame />
+      </ComplementRaceProvider>
+    </PageWithNav>
+  )
+}