nas-samba v2.0.0: per-user home directories, Samba accounts, remove quotas

- Each user gets a Linux + Samba account and home dir at /nas/home/<username>/
- Web UI file browsing scoped to per-user directories
- Creating/deleting users from web UI also manages system + Samba accounts
- Replaced hardcoded [data] SMB share with [homes] (per-user automatic shares)
- Removed hardcoded alexz user from entrypoint — server.js handles all user management
- Removed storage quotas from backend and frontend
- Existing users get home directories auto-created on startup (migration)

apps/nas-samba/source/entrypoint.sh

@@ -1,33 +1,8 @@
 #!/bin/bash
 set -e
 
-# Create users group if it doesn't exist
-getent group users >/dev/null 2>&1 || groupadd -g 100 users
-
-# Create alexz user with UID 1000 if not exists
-if ! id -u alexz >/dev/null 2>&1; then
-    # Remove any existing user with UID 1000 (e.g. ubuntu)
-    existing_user=$(getent passwd 1000 | cut -d: -f1)
-    if [ -n "$existing_user" ] && [ "$existing_user" != "alexz" ]; then
-        userdel "$existing_user" 2>/dev/null || true
-    fi
-    useradd -u 1000 -g users -M -s /usr/sbin/nologin alexz
-    echo "Created user alexz (UID 1000)"
-fi
-
-# Set Samba password from environment variable
-if [ -n "$SMB_PASSWORD" ]; then
-    echo -e "${SMB_PASSWORD}\n${SMB_PASSWORD}" | smbpasswd -a -s alexz
-    echo "Samba password set for alexz"
-else
-    echo "WARNING: SMB_PASSWORD not set. Samba authentication will fail."
-fi
-
 # Ensure directories exist
-mkdir -p /config /var/log/samba /run/samba /nas
-
-# Ensure correct ownership
-chown alexz:users /nas 2>/dev/null || true
+mkdir -p /config /var/log/samba /run/samba /nas/home
 
 echo "Starting supervisord..."
 exec /usr/bin/supervisord -c /etc/supervisor/conf.d/supervisord.conf