prompt for hub username with armbian as default, replace all hardcoded references

hub/setup-hub.sh

@@ -16,6 +16,9 @@ header() { echo -e "\n${CYAN}═════════════════
 
 header "TinyBoard Hub Setup"
 
+read -rp "Hub username [armbian]: " HUB_USER
+HUB_USER="${HUB_USER:-armbian}"
+
 header "Detecting Package Manager"
 if command -v apt-get >/dev/null 2>&1; then
     PKG_MANAGER="apt"
@@ -69,39 +72,39 @@ else
 fi
 
 header "Armbian User Setup"
-if id armbian >/dev/null 2>&1; then
+if id "$HUB_USER" >/dev/null 2>&1; then
-    warn "User 'armbian' already exists, skipping creation."
+    warn "User '$HUB_USER' already exists, skipping creation."
 else
     info "Creating armbian user..."
-    groupadd -g 1000 armbian 2>/dev/null || true
+    groupadd -g 1000 "$HUB_USER" 2>/dev/null || true
-    useradd -m -u 1000 -g 1000 -s /bin/bash armbian
+    useradd -m -u 1000 -g 1000 -s /bin/bash "$HUB_USER"
 
     ADDED_TO_GROUP=false
     if getent group sudo >/dev/null 2>&1; then
-        if usermod -aG sudo armbian 2>/dev/null; then
+        if usermod -aG sudo "$HUB_USER" 2>/dev/null; then
             ADDED_TO_GROUP=true
         fi
     fi
     if [ "$ADDED_TO_GROUP" = false ] && getent group wheel >/dev/null 2>&1; then
-        if usermod -aG wheel armbian 2>/dev/null; then
+        if usermod -aG wheel "$HUB_USER" 2>/dev/null; then
             ADDED_TO_GROUP=true
         fi
     fi
     if [ "$ADDED_TO_GROUP" = false ]; then
-        warn "Neither sudo nor wheel group found — armbian user has no sudo access."
+        warn "Neither sudo nor wheel group found — $HUB_USER user has no sudo access."
     fi
 
-    info "armbian user created."
+    info "$HUB_USER user created."
     echo ""
-    warn "Set a password for the armbian user:"
+    warn "Set a password for the $HUB_USER user:"
-    passwd armbian
+    passwd "$HUB_USER"
 fi
 
-ARMBIAN_HOME="/home/armbian"
+ARMBIAN_HOME="/home/$HUB_USER"
 SSH_DIR="$ARMBIAN_HOME/.ssh"
 mkdir -p "$SSH_DIR"
 touch "$SSH_DIR/authorized_keys"
-chown -R armbian:armbian "$SSH_DIR"
+chown -R "$HUB_USER":"$HUB_USER" "$SSH_DIR"
 chmod 700 "$SSH_DIR"
 chmod 600 "$SSH_DIR/authorized_keys"
 
@@ -146,17 +149,17 @@ else
 fi
 
 groupadd fuse 2>/dev/null || true
-usermod -aG fuse armbian 2>/dev/null || true
+usermod -aG fuse "$HUB_USER" 2>/dev/null || true
-info "armbian added to fuse group."
+info "$HUB_USER added to fuse group."
 
 header "Rclone Setup"
 RCLONE_CONF="$ARMBIAN_HOME/.config/rclone/rclone.conf"
 mkdir -p "$(dirname "$RCLONE_CONF")"
-chown -R armbian:armbian "$ARMBIAN_HOME/.config"
+chown -R "$HUB_USER":"$HUB_USER" "$ARMBIAN_HOME/.config"
 
 if [ ! -f "$RCLONE_CONF" ]; then
     touch "$RCLONE_CONF"
-    chown armbian:armbian "$RCLONE_CONF"
+    chown "$HUB_USER":"$HUB_USER" "$RCLONE_CONF"
     info "Empty rclone.conf created at $RCLONE_CONF."
 else
     warn "rclone.conf already exists, skipping."
@@ -166,24 +169,24 @@ header "Mount Point Setup"
 read -rp "Mount point for spoke filesystems [/mnt/hub]: " MOUNT_POINT
 MOUNT_POINT="${MOUNT_POINT:-/mnt/hub}"
 mkdir -p "$MOUNT_POINT"
-chown armbian:armbian "$MOUNT_POINT"
+chown "$HUB_USER":"$HUB_USER" "$MOUNT_POINT"
 info "Mount point created at $MOUNT_POINT."
 
 header "Crontab Setup"
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 HELPER="$SCRIPT_DIR/../hubspoke-helper.sh"
 CRON_LINE="@reboot $HELPER hub start-background"
-EXISTING=$(crontab -u armbian -l 2>/dev/null || true)
+EXISTING=$(crontab -u "$HUB_USER" -l 2>/dev/null || true)
 
 if echo "$EXISTING" | grep -qF "hub start-background"; then
     warn "Crontab entry already exists, skipping."
 else
-    (echo "$EXISTING"; echo "$CRON_LINE") | crontab -u armbian -
+    (echo "$EXISTING"; echo "$CRON_LINE") | crontab -u "$HUB_USER" -
     info "Added @reboot crontab entry for rclone mount."
 fi
 
 header "Hub Setup Complete"
-echo -e "  Armbian user:  ${GREEN}armbian${NC}"
+echo -e "  Hub user:      ${GREEN}$HUB_USER${NC}"
 echo -e "  SSH config:    ${GREEN}GatewayPorts yes, AllowTcpForwarding yes${NC}"
 echo -e "  FUSE:          ${GREEN}user_allow_other enabled${NC}"
 echo -e "  rclone config: ${GREEN}$RCLONE_CONF${NC}"