FHS F4.2: bluez storage to /var/lib/bluetooth

bluez configure storagedir flipped to /var/lib/bluetooth (Arch
convention for paired-device state). post_makeinstall_target plants
the bridge symlink to /storage/.cache/bluetooth so pairings persist
on the rw overlay across reboots.

archr-config forgetBT helper and backuptool default list also point
at the FHS path.

tmpfiles z_05_bluez.conf intentionally keeps creating
/storage/.cache/bluetooth as the real overlay dir.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

projects/ArchR/packages/archr/sources/scripts/archr-config

@@ -274,7 +274,7 @@ fi
 
 if [[ "$command" == "forgetBT" ]]; then
    systemctl stop bluetooth bluetooth-agent
-   rm -rf /storage/.cache/bluetooth/* /storage/roms/backups/bluetooth.tar
+   rm -rf /var/lib/bluetooth/* /storage/roms/backups/bluetooth.tar
    systemctl start bluetooth bluetooth-agent
    exit 0
 fi

projects/ArchR/packages/archr/sources/scripts/backuptool

@@ -22,7 +22,7 @@ mkdir -p ${BACKUPFOLDER}
 DEFAULT=(
     /storage/.config/fancontrol.conf
     /storage/.config/backuptool.conf
-    /storage/.cache/bluetooth/*
+    /var/lib/bluetooth/*
     /storage/.cache/connman*
     /storage/.config/system/configs/system.cfg
     /storage/.config/ppsspp/*

projects/ArchR/packages/network/bluez/package.mk

@@ -45,7 +45,7 @@ PKG_CONFIGURE_OPTS_TARGET="--disable-dependency-tracking \
                            --enable-hid \
                            --with-gnu-ld \
                            ${BLUEZ_CONFIG} \
-                           storagedir=/storage/.cache/bluetooth"
+                           storagedir=/var/lib/bluetooth"
 
 pre_configure_target() {
 # bluez fails to build in subdirs
@@ -81,6 +81,13 @@ post_makeinstall_target() {
   # bluez looks in /etc/firmware/
     ln -sf /usr/lib/firmware ${INSTALL}/etc/firmware
 
+  # FHS bridge: bluez storagedir is baked at configure to /var/lib/bluetooth
+  # (Arch convention). tmpfiles z_05_bluez.conf creates the backing dir
+  # /storage/.cache/bluetooth so the symlink resolves on first boot and
+  # paired devices persist across reboots.
+  mkdir -p ${INSTALL}/var/lib
+  ln -sf /storage/.cache/bluetooth ${INSTALL}/var/lib/bluetooth
+
   # libbluetooth required for bluez-alsa
   #  sed -i 's/-lbluetooth//g' ${PKG_BUILD}/lib/bluez.pc
     cp -P ${PKG_BUILD}/lib/bluez.pc ${SYSROOT_PREFIX}/usr/lib/pkgconfig