Add extra prompts, endless generation, random character default, and small fixes

- Add extra positive/negative prompt textareas to all 9 detail pages with session persistence
- Add Endless generation button to all detail pages (continuous preview generation until stopped)
- Default character selector to "Random Character" on all secondary detail pages
- Fix queue clear endpoint (remove spurious auth check)
- Refactor app.py into routes/ and services/ modules
- Update CLAUDE.md with new architecture documentation
- Various data file updates and cleanup

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

docker-compose.yml

@@ -5,6 +5,15 @@ services:
     stdin_open: true
     restart: unless-stopped
 
+  character-mcp:
+    build: https://git.liveaodh.com/aodhan/character-mcp.git
+    image: character-mcp:latest
+    stdin_open: true
+    restart: unless-stopped
+    volumes:
+       # Persistent cache for character data
+      - character-cache:/root/.local/share/character-mcp
+
   app:
     build: .
     ports:
@@ -22,8 +31,8 @@ services:
       - ./static/uploads:/app/static/uploads
       - ./instance:/app/instance
       - ./flask_session:/app/flask_session
-      # Model files (read-only — used for checkpoint/LoRA scanning)
-      - /Volumes/ImageModels:/ImageModels:ro
+      # Model files
+      - /Volumes/ImageModels:/ImageModels
       # Docker socket so the app can run danbooru-mcp tool containers
       - /var/run/docker.sock:/var/run/docker.sock
     extra_hosts:
@@ -31,4 +40,8 @@ services:
       - "host.docker.internal:host-gateway"
     depends_on:
       - danbooru-mcp
+      - character-mcp
     restart: unless-stopped
+
+volumes:
+  character-cache: