feat(app-controller): modularize handlers and enforce 1-space indentation

fix_indent_v3.py

@@ -0,0 +1,38 @@
+
+import sys
+
+def fix_indentation(file_path):
+ with open(file_path, 'r', encoding='utf-8') as f:
+  lines = f.readlines()
+ 
+ fixed_lines = []
+ indent_map = {0: 0}
+ 
+ for i, line in enumerate(lines):
+  stripped = line.lstrip()
+  if not stripped:
+   fixed_lines.append('\n')
+   continue
+  
+  old_indent = len(line) - len(stripped)
+  
+  # Remove larger indents from map if we dedent below them
+  for k in list(indent_map.keys()):
+   if k > old_indent:
+    del indent_map[k]
+  
+  if old_indent not in indent_map:
+   # Find the closest smaller indent
+   known = sorted([k for k in indent_map.keys() if k < old_indent])
+   parent_new = indent_map[max(known)]
+   indent_map[old_indent] = parent_new + 1
+  
+  new_indent = indent_map[old_indent]
+  fixed_lines.append(' ' * new_indent + stripped)
+ 
+ with open(file_path, 'w', encoding='utf-8') as f:
+  f.writelines(fixed_lines)
+
+if __name__ == '__main__':
+ fix_indentation('src/app_controller.py')
+ print("Indentation fixed v3.")