fix: improve lftp mirror command for existing directories

Change mirror command to work better with existing target directories:
- Use cd/lcd to change to directories first
- Simplify mirror command to work from current directories
- Add mkdir fallback if target directory doesn't exist
- Fix SSL setting from ssl-allow to ssl-force for proper FTPS

This resolves issues when httpsdocs directory already exists on server.

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

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

DEPLOYMENT.md

@@ -8,7 +8,7 @@ Before deploying, ensure you have:
 
 1. **Built the site**: Run `hugo build` to generate the `public/` directory
 2. **lftp installed**: The deployment script requires the `lftp` command-line tool
-3. **FTPS credentials**: You need the FTPS password for the server
+3. **FTPS credentials**: You need the FTPS username and password for the server
 
 ### Installing lftp
 
@@ -37,15 +37,16 @@ hugo build
 
 This generates the static files in the `public/` directory.
 
-### 2. Set Environment Variable
+### 2. Set Environment Variables
 
-Set the FTPS password as an environment variable:
+Set the FTPS credentials as environment variables:
 
 ```bash
+export FTPS_USER='gurix'
 export FTPS_PASSWORD='your-password-here'
 ```
 
-**Important**: Never commit passwords to version control. The password should only be stored as an environment variable.
+**Important**: Never commit passwords to version control. Credentials should only be stored as environment variables.
 
 ### 3. Run the Deployment Script
 
@@ -69,7 +70,8 @@ Here's the full workflow:
 # Build the site
 hugo build
 
-# Set the password (only needed once per session)
+# Set credentials (only needed once per session)
+export FTPS_USER='gurix'
 export FTPS_PASSWORD='your-password'
 
 # Deploy