Add waiting system application files

- Add main application files (main.py, models.py, schemas.py, etc.)
- Add routers for all features (waiting, attendance, members, etc.)
- Add HTML templates for admin and user interfaces
- Add migration scripts and utility files
- Add Docker configuration
- Add documentation files
- Add .gitignore to exclude database and cache files

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

migrate_add_font_settings.py

@@ -0,0 +1,25 @@
+import sqlite3
+
+def migrate():
+    conn = sqlite3.connect('waiting_system.db')
+    cursor = conn.cursor()
+    
+    columns = [
+        ("manager_font_family", "TEXT", "'Nanum Gothic'"),
+        ("manager_font_size", "TEXT", "'15px'"),
+        ("board_font_family", "TEXT", "'Nanum Gothic'"),
+        ("board_font_size", "TEXT", "'24px'")
+    ]
+    
+    for col, type_aff, default in columns:
+        try:
+            cursor.execute(f"ALTER TABLE store_settings ADD COLUMN {col} {type_aff} DEFAULT {default}")
+            print(f"Added column {col}")
+        except sqlite3.OperationalError as e:
+            print(f"Column {col} already exists or error: {e}")
+            
+    conn.commit()
+    conn.close()
+
+if __name__ == "__main__":
+    migrate()