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/candycanelatexlingerieill.json

@@ -0,0 +1,33 @@
+{
+  "outfit_id": "candycanelatexlingerieill",
+  "outfit_name": "Candy Cane Latex Lingerie",
+  "wardrobe": {
+    "full_body": "red_capelet, latex_lingerie",
+    "headwear": "",
+    "top": "red_capelet, latex_bra",
+    "bottom": "latex_panties, garter_belt",
+    "legwear": "striped_thighhighs",
+    "footwear": "high_heels",
+    "hands": "",
+    "accessories": "candy_cane"
+  },
+  "lora": {
+    "lora_name": "Illustrious/Clothing/candycanelatexlingerieILL.safetensors",
+    "lora_weight": 0.8,
+    "lora_weight_min": 0.7,
+    "lora_weight_max": 1.0,
+    "lora_triggers": ""
+  },
+  "tags": [
+    "latex",
+    "lingerie",
+    "red_capelet",
+    "striped_thighhighs",
+    "high_heels",
+    "garter_belt",
+    "panties",
+    "striped_clothes",
+    "candy_cane",
+    "shiny"
+  ]
+}