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>

data/styles/cum_on_ero_figur.json

@@ -1,15 +1,15 @@
 {
   "style_id": "cum_on_ero_figur",
-  "style_name": "Cum On Ero Figur",
+  "style_name": "Cum On Ero Figure",
   "style": {
     "artist_name": "",
-    "artistic_style": "cum_on_ero_figur, figurine, (cum:1.2)"
+    "artistic_style": "figurine, (cum:1.2)"
   },
   "lora": {
     "lora_name": "Illustrious/Styles/cum_on_ero_figur.safetensors",
     "lora_weight": 0.9,
     "lora_triggers": "cum on figure, figurine",
-    "lora_weight_min": 0.9,
-    "lora_weight_max": 0.9
+    "lora_weight_min": 0.8,
+    "lora_weight_max": 0.95
   }
 }