nextcloud/user_run: centralise Flatpak app ID and data dir path

Introduce NC_FLATPAK_APP and NC_FLATPAK_DIR variables so the app ID
and ~/.var/app path are defined once and referenced everywhere, rather
than repeated as literals. Also fixes a stray leading '/' in the
nextcloud.cfg grep path.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client_software/0050_nextcloud_desktopclient/user_run.sh

@@ -10,7 +10,9 @@
 echo "Setup Nextcloud- Sync"
 
 #Local Vars
-BASECMD="/usr/bin/flatpak run --branch=stable --arch=x86_64 --command=nextcloud com.nextcloud.desktopclient.nextcloud"
+NC_FLATPAK_APP="com.nextcloud.desktopclient.nextcloud"
+NC_FLATPAK_DIR="${HOME}/.var/app/${NC_FLATPAK_APP}"
+BASECMD="/usr/bin/flatpak run --branch=stable --arch=x86_64 --command=nextcloud ${NC_FLATPAK_APP}"
 
 #Check Token
 if [ "${DAVTOKEN_USER}." = "." ]; then
@@ -21,9 +23,9 @@ fi
 
 #Remove Nextcloud from autostart anyway! Must be started by this script manually, because if it was started befor the ecrypted mount,
 #it will never sync and always throw an error that the local dir is missing
-if [ -f "$HOME/.config/autostart/com.nextcloud.desktopclient.nextcloud.desktop" ]; then
+if [ -f "$HOME/.config/autostart/${NC_FLATPAK_APP}.desktop" ]; then
     echo "Remove Autostart Nextcloud (old)"
-    rm $HOME/.config/autostart/com.nextcloud.desktopclient.nextcloud.desktop
+    rm $HOME/.config/autostart/${NC_FLATPAK_APP}.desktop
 fi
 # Same for NCs nuild-in autostart
 if [ -f "$HOME/.config/autostart/Nextcloud.desktop" ]; then
@@ -34,7 +36,7 @@ fi
 NC_PID=$( pgrep -u $USER nextcloud )
 if [ -n "${NC_PID}" ]; then
     echo "Stopping Nextcloud with PID ${NC_PID}"
-    /usr/bin/flatpak run --branch=stable --arch=x86_64 --command=nextcloud com.nextcloud.desktopclient.nextcloud --quit >/dev/null
+    /usr/bin/flatpak run --branch=stable --arch=x86_64 --command=nextcloud ${NC_FLATPAK_APP} --quit >/dev/null
     if [ $? -ne 0 ]; then
         echo "Service could not be stopped, please check why."
         exit 1
@@ -45,14 +47,14 @@ fi
 NC_PID=$( pgrep -u $USER nextcloud )
 if [ -n "${NC_PID}" ]; then
     echo "Nextcloud still running with PID ${NC_PID}. Force stop"
-    # Kill does not remove lockfiles in ~/.var/app/com.nextcloud.desktopclient.nextcloud/cache/tmp/ which will prevent next start
+    # Kill does not remove lockfiles in ${NC_FLATPAK_DIR}/cache/tmp/ which will prevent next start
     kill ${NC_PID}
     if [ $? -ne 0 ]; then
         echo "Service could not be stopped, please check why."
         exit 1
     fi
     sleep 0.5
-    rm -rif ${HOME}/.var/app/com.nextcloud.desktopclient.nextcloud/cache/temp/*
+    rm -rif ${NC_FLATPAK_DIR}/cache/temp/*
 fi
 
 #Check if Option is Configured to use Nextcloud Desktop Data- Sync
@@ -95,7 +97,7 @@ for CLIENT_DATA_DECLARE_LINE in "${CLIENT_DATA_SYNC[@]}"; do
     eval "${CLIENT_DATA_DECLARE_LINE}"
     # echo "DEBUG user_run.sh(0020)_2: ${CLIENT_DATA_SYNC_LINE[@]}"
     # Now, CLIENT_DATA_SYNC_LINE[0] contains the local path and CLIENT_DATA_SYNC_LINE[1] contains the remote path
-    if grep -q "localPath=${CLIENT_DATA_SYNC_LINE[0]}" "/${HOME}/.var/app/com.nextcloud.desktopclient.nextcloud/config/Nextcloud/nextcloud.cfg"; then
+    if grep -q "localPath=${CLIENT_DATA_SYNC_LINE[0]}" "${NC_FLATPAK_DIR}/config/Nextcloud/nextcloud.cfg"; then
         echo "Already found configured local folder ${CLIENT_DATA_SYNC_LINE[0]} syncing with ${CLIENT_DATA_SYNC_LINE[1]} . Leaving it unchanged."
         _nc_first=0
     else
@@ -116,8 +118,8 @@ for CLIENT_DATA_DECLARE_LINE in "${CLIENT_DATA_SYNC[@]}"; do
         echo "Exec: ${SYNCCMD_HIDDENPW}"
         if [ "${_nc_wipe_done}" -eq 0 ]; then
             # Autoprovisioning only works when no configuration is existent — wipe once before first new setup
-            rm -rif ${HOME}/.var/app/com.nextcloud.desktopclient.nextcloud/data/Nextcloud
-            rm -rif ${HOME}/.var/app/com.nextcloud.desktopclient.nextcloud/config/Nextcloud
+            rm -rif ${NC_FLATPAK_DIR}/data/Nextcloud
+            rm -rif ${NC_FLATPAK_DIR}/config/Nextcloud
             _nc_wipe_done=1
         fi
         #Now, execute Nextcloud autoprovisionig