feat: promote botfights from web-only to container app

Convert botfights from external link to real container app on port 9100.
Add manifest, update marketplace/discover/kiosk/session configs, switch
registry URLs to git.tx1138.com.

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

apps/botfights/manifest.yml

@@ -0,0 +1,73 @@
+app:
+  id: botfights
+  name: BotFights
+  version: 1.0.0
+  description: Bot competition arena with 2-player arcade fighting mode. AI bots battle in trivia challenges while humans duke it out with controllers. Built for Bitcoiners.
+  category: community
+
+  container:
+    image: git.tx1138.com/lfg2025/botfights:1.0.0
+    pull_policy: always
+
+  dependencies:
+    - storage: 500Mi
+
+  resources:
+    cpu_limit: 2
+    memory_limit: 512Mi
+    disk_limit: 500Mi
+
+  security:
+    capabilities: []
+    readonly_root: true
+    no_new_privileges: true
+    user: 1001
+    seccomp_profile: default
+    network_policy: bridge
+    apparmor_profile: default
+
+  ports:
+    - host: 9100
+      container: 9100
+      protocol: tcp  # Web UI + API
+
+  volumes:
+    - type: bind
+      source: botfights-data
+      target: /app/server/data
+    - type: tmpfs
+      target: /tmp
+      options: [rw,noexec,nosuid,size=64m]
+
+  environment:
+    - NODE_ENV=production
+
+  health_check:
+    type: http
+    endpoint: http://localhost:9100
+    path: /api/health
+    interval: 30s
+    timeout: 10s
+    retries: 3
+    start_period: 30s
+
+  interfaces:
+    main:
+      name: Web UI
+      description: Bot arena and arcade fighter with controller support
+      type: ui
+      port: 9100
+      protocol: http
+      path: /
+
+  metadata:
+    author: Dorian
+    license: MIT
+    tags:
+      - bitcoin
+      - gaming
+      - arcade
+      - fighter
+      - bots
+      - competition
+      - controller