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>

fix_image_modal.py

@@ -0,0 +1,55 @@
+import glob
+import re
+
+files = glob.glob('templates/*/detail.html') + ['templates/detail.html']
+
+for filepath in files:
+    with open(filepath, 'r') as f:
+        content = f.read()
+
+    # We need to replace:
+    # data-bs-toggle="modal" data-bs-target="#imageModal" onclick="showImage(this.querySelector('img').src)"
+    # with:
+    # onclick="openGallery([this.querySelector('img') ? this.querySelector('img').src : ''], 0)"
+    
+    # Or in some places:
+    # data-bs-toggle="modal" data-bs-target="#imageModal" onclick="showImage(this.querySelector('img') ? this.querySelector('img').src : '')"
+    # and:
+    # data-bs-toggle="modal" data-bs-target="#imageModal" onclick="showImage(this.src)"
+
+    # Also there are instances like:
+    # onclick="showImage(this.querySelector('img').src)"
+    # and
+    # onclick="showImage(this.src)"
+    
+    content = re.sub(
+        r'data-bs-toggle="modal"\s+data-bs-target="#imageModal"\s*onclick="showImage\([^"]+\)"',
+        r'onclick="openGallery([this.querySelector(\'img\') ? this.querySelector(\'img\').src : this.src || \'\'], 0)"',
+        content
+    )
+    
+    # Catch any remaining data-bs-toggle
+    content = re.sub(
+        r'data-bs-toggle="modal"\s+data-bs-target="#imageModal"',
+        r'',
+        content
+    )
+
+    # Catch any remaining showImage(...)
+    content = re.sub(
+        r'onclick="showImage\([^"]+\)"',
+        r'onclick="openGallery([this.querySelector(\'img\') ? this.querySelector(\'img\').src : this.src || \'\'], 0)"',
+        content
+    )
+
+    # Remove the old function showImage(src) { ... }
+    content = re.sub(
+        r'function showImage\(src\) \{\s*document\.getElementById\(\'modalImage\'\)\.src = src;\s*\}',
+        r'',
+        content
+    )
+
+    with open(filepath, 'w') as f:
+        f.write(content)
+        
+    print(f"Fixed {filepath}")