Fix database scheme and introduce automatic database migration

README.md

@@ -192,65 +192,65 @@ password = ["password"]
 ### Initialize Database
 
 ```bash
-./ddns-service --init-db
+ddns-service --init-db
 ```
 
 ### User Management
 
 ```bash
 # List users
-./ddns-service user list
+ddns-service user list
 
 # Add user (prompts for password)
-./ddns-service user add myuser user@example.com
+ddns-service user add myuser user@example.com
 
 # Delete user (fails if hostnames exist)
-./ddns-service user delete myuser
+ddns-service user delete myuser
 
 # Change password
-./ddns-service user passwd myuser
+ddns-service user passwd myuser
 
 # Update email
-./ddns-service user email myuser new@example.com
+ddns-service user email myuser new@example.com
 ```
 
 ### Hostname Management
 
 ```bash
 # List all hostnames
-./ddns-service hostname list
+ddns-service hostname list
 
 # List hostnames for specific user
-./ddns-service hostname list --user myuser
+ddns-service hostname list --user myuser
 
 # Add hostname
-./ddns-service hostname add myuser mypc.dyn.example.com dyn.example.com
+ddns-service hostname add myuser mypc dyn.example.com
 
 # Add hostname with custom TTLs
-./ddns-service hostname add myuser mypc.dyn.example.com dyn.example.com \
+ddns-service hostname add myuser mypc dyn.example.com \
     --dns-ttl 60 --expiry-ttl 7200
 
 # Modify hostname TTLs
-./ddns-service hostname modify mypc.dyn.example.com --dns-ttl 120
+ddns-service hostname modify mypc dyn.example.com --dns-ttl 120
 
 # Delete hostname
-./ddns-service hostname delete mypc.dyn.example.com
+ddns-service hostname delete mypc dyn.example.com
 ```
 
 ### Manual Cleanup
 
 ```bash
 # Manually cleanup expired hostnames (delete DNS records)
-./ddns-service cleanup
+ddns-service cleanup
 ```
 
 ### Run Daemon
 
 ```bash
-./ddns-service --daemon
+ddns-service --daemon
 
 # With debug logging
-./ddns-service --daemon --debug
+ddns-service --daemon --debug
 ```
 
 ## HTTP API