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/clothing/flower_000001_1563226.json

@@ -1,22 +1,22 @@
 {
   "outfit_id": "flower_000001_1563226",
-  "outfit_name": "Flower 000001 1563226",
+  "outfit_name": "Swimsuit - Flower",
   "wardrobe": {
     "full_body": "",
     "headwear": "",
-    "top": "bandeau",
-    "bottom": "high-waist_bikini",
+    "top": "flower bikini top",
+    "bottom": "flower bikini bottom",
     "legwear": "",
     "footwear": "",
-    "hands": "detached_sleeves",
-    "accessories": "fur_choker"
+    "hands": "",
+    "accessories": ""
   },
   "lora": {
     "lora_name": "Illustrious/Clothing/Flower-000001_1563226.safetensors",
     "lora_weight": 0.8,
     "lora_triggers": "Jedpslb",
     "lora_weight_min": 0.8,
-    "lora_weight_max": 0.8
+    "lora_weight_max": 1.0
   },
   "tags": [
     "bikini",
@@ -25,4 +25,4 @@
     "animal_ears",
     "tail"
   ]
-}
+}