fix(ci): Use full path to rnsd in deployment script

The deploy workflow was failing to start rnsd because the SSH session's
PATH doesn't include ~/.local/bin where rnsd is installed.

Issue:
- rnsd installed at ~/.local/bin/rnsd (pip install --user)
- Non-interactive SSH session doesn't have ~/.local/bin in PATH
- Command "nohup rnsd" failed: "command not found"
- Deployment reported "Failed to start rnsd"

Fix:
- Define RNSD_BIN="$HOME/.local/bin/rnsd"
- Use full path when starting rnsd via nohup
- Works regardless of SSH session PATH configuration

Now deployment will successfully restart rnsd after copying updated files.

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

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

.github/workflows/deploy.yml

@@ -114,13 +114,14 @@ jobs:
           cp -v src/RNS/Interfaces/*.py ~/.reticulum/interfaces/ || exit 1
 
           echo '  [7/7] Restarting rnsd...'
+          RNSD_BIN=\"\$HOME/.local/bin/rnsd\"
           if systemctl is-active --quiet rnsd 2>/dev/null; then
             sudo systemctl restart rnsd || exit 1
             echo '  ✓ rnsd restarted via systemd'
           else
             pkill -9 rnsd 2>/dev/null || true
             sleep 1
-            nohup rnsd > /dev/null 2>&1 &
+            nohup \"\$RNSD_BIN\" > /dev/null 2>&1 &
             sleep 2
             if pgrep -x rnsd > /dev/null; then
               echo '  ✓ rnsd started successfully'