feat: Implement mobile application and lead processing utilities.

scripts/dump_duesseldorf_text.py

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+import pypdf
+
+pdf_path = 'cologne_duesseldorf_data/duesseldorf_innungen.pdf'
+
+try:
+    reader = pypdf.PdfReader(pdf_path)
+    text = ""
+    for page in reader.pages:
+        text += page.extract_text() + "\n"
+    
+    with open('cologne_duesseldorf_data/duesseldorf_raw.txt', 'w', encoding='utf-8') as f:
+        f.write(text)
+    print(f"Dumped {len(text)} characters to duesseldorf_raw.txt")
+except Exception as e:
+    print(f"Error: {e}")