Add backtunnel-access-gui, enhance installation/removal logic, and refine backtunnel-share unmount instructions

scripts/backtunnel-access-gui

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+
+# Copyright (c) 2025. LUXIM d.o.o., Slovenia - Matjaž Mozetič.
+
+set -euo pipefail
+
+LOG="/tmp/backtunnel-access-gui.$UID.log"
+exec > >(tee -a "$LOG") 2>&1
+export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:${PATH:-}"
+
+FOLDER="${1:-}"
+if [[ -z "$FOLDER" ]]; then
+  kdialog --error "No folder selected." || true
+  exit 1
+fi
+
+# Defaults
+REMOTE_DEFAULT="user@vps.example.com"
+PORT_DEFAULT="2222"
+MOUNT_DEFAULT="/mnt/remote-rssh"
+
+# Profiles (read-only prefill; access side does not use @profile)
+PROFILES_USER="${XDG_CONFIG_HOME:-$HOME/.config}/backtunnel/profiles.ini"
+PROFILES_SYS="/etc/backtunnel/profiles.ini"
+PROFILES_PKG="/usr/share/backtunnel/profiles.ini"
+if   [[ -f "$PROFILES_USER" ]]; then PROFILES_FILE="$PROFILES_USER"
+elif [[ -f "$PROFILES_SYS"  ]]; then PROFILES_FILE="$PROFILES_SYS"
+else                                 PROFILES_FILE="$PROFILES_PKG"
+fi
+
+if [[ -f "$PROFILES_FILE" ]]; then
+  # pick one to prefill user@host (optional)
+  mapfile -t profs < <(awk '/^\[/{gsub(/^\[|\]$/,"",$1); if ($1!="default") print $1}' "$PROFILES_FILE")
+  if (( ${#profs[@]} )); then
+    choice="$(kdialog --combobox "Prefill from profile (optional)" "${profs[@]}")" || choice=""
+    if [[ -n "$choice" ]]; then
+      getval() { awk -v s="[""$choice""]" -v k="$1" '
+        $0==s{ok=1; next} /^\[/{ok=0}
+        ok && $0 ~ /^[[:alnum:]_.-]+[[:space:]]*=/ {
+          line=$0; sub(/[[:space:]]*=[[:space:]]*/, "=", line)
+          split(line,a,"="); if(a[1]==k){val=substr(line,index(line,"=")+1); gsub(/^[[:space:]]+|[[:space:]]+$/,"",val); print val; exit}
+        }' "$PROFILES_FILE" 2>/dev/null; }
+      u="$(getval user)"; h="$(getval host)"; p="$(getval tunnel_port)"; m="$(getval invite_mount)"
+      [[ -n "$u" && -n "$h" ]] && REMOTE_DEFAULT="$u@$h"
+      [[ -n "$p" ]] && PORT_DEFAULT="$p"
+      [[ -n "$m" ]] && MOUNT_DEFAULT="$m"
+    fi
+  fi
+fi
+
+REMOTE="$(kdialog --inputbox "Remote (user@host or user:host):" "$REMOTE_DEFAULT")" || exit 0
+PORT="$(kdialog --inputbox "Tunnel port on remote:" "$PORT_DEFAULT")" || exit 0
+MP="$(kdialog --getexistingdirectory --title "Choose mount point" "$MOUNT_DEFAULT")" || exit 0
+
+cmd=( backtunnel-access "$FOLDER" from "$REMOTE" -p "$PORT" -m "$MP" )
+
+if command -v konsole >/dev/null 2>&1; then
+  exec konsole --noclose -e "${cmd[@]}"
+elif command -v xterm >/dev/null 2>&1; then
+  exec xterm -hold -e "${cmd[@]}"
+else
+  nohup "${cmd[@]}" >>"$LOG" 2>&1 &
+  kdialog --msgbox "Mount started in background.\nSee log: $LOG"
+fi