feat: add custom packages

- frpc-config: pre-configure frpc tunnels (SSH/Jellyfin/Navidrome)
- navidrome-autoinit: auto-create Navidrome container on first boot
- expand-overlay: auto-resize eMMC overlay partition

package/diy/expand-overlay/Makefile

@@ -0,0 +1,45 @@
+#
+# Copyright (C) 2026 xiexiaobao
+#
+# This is free software, licensed under the GPL 2.0 license.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=expand-overlay
+PKG_VERSION:=1.0
+PKG_RELEASE:=1
+
+PKG_MAINTAINER:=xiexiaobao
+PKG_LICENSE:=GPL-2.0
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/expand-overlay
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=Auto-expand overlay partition on first boot
+  DEPENDS:=+sfdisk +e2fsprogs
+  PKGARCH:=all
+endef
+
+define Package/expand-overlay/description
+  Auto-resize the NanoPi R6C eMMC overlay partition (mmcblk2p3)
+  to fill all remaining unallocated space on first boot.
+  Two-stage: uci-defaults resizes partition table, init.d resizes filesystem.
+endef
+
+define Build/Configure
+endef
+
+define Build/Compile
+endef
+
+define Package/expand-overlay/install
+	$(INSTALL_DIR) $(1)/etc/uci-defaults
+	$(INSTALL_BIN) ./files/expand-overlay.sh $(1)/etc/uci-defaults/99-expand-overlay
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/expand-overlay.init $(1)/etc/init.d/expand-overlay
+endef
+
+$(eval $(call BuildPackage,expand-overlay))

package/diy/expand-overlay/files/expand-overlay.init

@@ -0,0 +1,25 @@
+#!/bin/sh /etc/rc.common
+# /etc/init.d/expand-overlay
+# Stage 2: Resize filesystem to match expanded partition.
+# Runs at START=99, after overlay is mounted and most services started.
+
+START=99
+
+boot() {
+	local flag="/etc/resize2fs.done"
+	[ -f "$flag" ] && return 0
+
+	# Wait for stage1 to finish (uci-defaults running before us)
+	local i=0
+	while [ ! -f "/etc/expand-overlay.done" ] && [ $i -lt 30 ]; do
+		sleep 1
+		i=$((i + 1))
+	done
+
+	[ ! -f "/etc/expand-overlay.done" ] && return 0
+
+	# Resize filesystem
+	resize2fs /dev/mmcblk2p3 2>/dev/null
+	touch "$flag"
+	return 0
+}

package/diy/expand-overlay/files/expand-overlay.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+# /etc/uci-defaults/99-expand-overlay
+# Stage 1: Resize partition table to fill unallocated eMMC space.
+# Auto-removed by uci-defaults after first run.
+
+FLAG_FILE="/etc/expand-overlay.done"
+
+[ -f "$FLAG_FILE" ] && exit 0
+
+# Only run if root is on eMMC
+ROOT_DEV=$(mount | grep ' / ' | awk '{print $1}' | sed 's/p[0-9]*$//')
+[ "$ROOT_DEV" != "/dev/mmcblk2" ] && exit 0
+
+# Save backup, resize partition 3 to fill remaining space
+sfdisk -d /dev/mmcblk2 > /etc/sfdisk.bak 2>/dev/null
+echo ",+" | sfdisk -N 3 /dev/mmcblk2 2>/dev/null
+
+touch "$FLAG_FILE"
+exit 0

package/diy/frpc-config/Makefile

@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2026 xiexiaobao
+#
+# This is free software, licensed under the GPL 2.0 license.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=frpc-config
+PKG_VERSION:=1.0
+PKG_RELEASE:=1
+
+PKG_MAINTAINER:=xiexiaobao
+PKG_LICENSE:=GPL-2.0
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/frpc-config
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=Pre-configured frpc tunnels (SSH + Jellyfin + Navidrome)
+  DEPENDS:=+frpc
+  PKGARCH:=all
+endef
+
+define Package/frpc-config/description
+  Pre-configure frpc tunnels for VPS 43.134.64.107:7000.
+  Tunnels: SSH(:2222), Jellyfin(:8096), Navidrome(:4533).
+endef
+
+define Build/Configure
+endef
+
+define Build/Compile
+endef
+
+define Package/frpc-config/install
+	$(INSTALL_DIR) $(1)/etc/config
+	$(INSTALL_DATA) ./files/frpc $(1)/etc/config/frpc
+endef
+
+$(eval $(call BuildPackage,frpc-config))

package/diy/frpc-config/files/frpc

@@ -0,0 +1,32 @@
+config init
+	option stdout '1'
+	option stderr '1'
+	option user 'frpc'
+	option group 'frpc'
+	option respawn '1'
+
+config conf 'common'
+	option server_addr '43.134.64.107'
+	option server_port '7000'
+	option token '@@xiefeng'
+
+config conf 'ssh'
+	option type 'tcp'
+	option local_ip '127.0.0.1'
+	option local_port '22'
+	option remote_port '2222'
+	option name 'ssh'
+
+config conf 'jellyfin'
+	option type 'tcp'
+	option local_ip '127.0.0.1'
+	option local_port '8096'
+	option remote_port '8096'
+	option name 'jellyfin'
+
+config conf 'navidrome'
+	option type 'tcp'
+	option local_ip '127.0.0.1'
+	option local_port '4533'
+	option remote_port '4533'
+	option name 'navidrome'

package/diy/navidrome-autoinit/Makefile

@@ -0,0 +1,42 @@
+#
+# Copyright (C) 2026 xiexiaobao
+#
+# This is free software, licensed under the GPL 2.0 license.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=navidrome-autoinit
+PKG_VERSION:=1.0
+PKG_RELEASE:=1
+
+PKG_MAINTAINER:=xiexiaobao
+PKG_LICENSE:=GPL-2.0
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/navidrome-autoinit
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=Auto-create Navidrome container on first boot
+  DEPENDS:=+dockerd
+  PKGARCH:=all
+endef
+
+define Package/navidrome-autoinit/description
+  Automatically pull and start the Navidrome music streaming container
+  on first boot after flashing. Music and data directories on /mnt/usb1-0.
+endef
+
+define Build/Configure
+endef
+
+define Build/Compile
+endef
+
+define Package/navidrome-autoinit/install
+	$(INSTALL_DIR) $(1)/etc/init.d
+	$(INSTALL_BIN) ./files/navidrome.init $(1)/etc/init.d/navidrome-autoinit
+endef
+
+$(eval $(call BuildPackage,navidrome-autoinit))

package/diy/navidrome-autoinit/files/navidrome.init

@@ -0,0 +1,70 @@
+#!/bin/sh /etc/rc.common
+# /etc/init.d/navidrome-autoinit
+# Auto-create Navidrome Docker container on first boot.
+# Idempotent: skips if container or FLAG_FILE exists.
+# Tolerates missing TF card: exits gracefully.
+
+START=97
+FLAG_FILE="/etc/navidrome-autoinit.done"
+CONTAINER="navidrome"
+IMAGE="deluan/navidrome:latest"
+MUSIC_DIR="/mnt/usb1-0/music"
+DATA_DIR="/mnt/usb1-0/navidrome"
+PORT="4533"
+
+boot() {
+	[ -f "$FLAG_FILE" ] && return 0
+
+	# Verify Docker is installed
+	if ! command -v docker >/dev/null 2>&1; then
+		logger -t navidrome-autoinit "docker binary not found, skipping"
+		return 0
+	fi
+
+	# Wait up to 30s for dockerd to be ready
+	local i=0
+	while ! docker info >/dev/null 2>&1 && [ $i -lt 10 ]; do
+		sleep 3
+		i=$((i + 1))
+	done
+	if ! docker info >/dev/null 2>&1; then
+		logger -t navidrome-autoinit "dockerd not ready after 30s, will retry next boot"
+		return 0
+	fi
+
+	# Container already exists (e.g. Docker data root restored from TF card)
+	if docker inspect "$CONTAINER" >/dev/null 2>&1; then
+		logger -t navidrome-autoinit "container $CONTAINER already exists, skipping"
+		touch "$FLAG_FILE"
+		return 0
+	fi
+
+	# Create music and data directories on TF card
+	mkdir -p "$MUSIC_DIR" "$DATA_DIR"
+
+	# Pull the image (tolerate network failure — will retry next boot)
+	logger -t navidrome-autoinit "pulling $IMAGE..."
+	if ! docker pull "$IMAGE" 2>&1 | logger -t navidrome-autoinit; then
+		logger -t navidrome-autoinit "pull failed, will retry next boot"
+		return 0
+	fi
+
+	# Create and start the container
+	logger -t navidrome-autoinit "creating container $CONTAINER..."
+	docker run -d \
+		--name "$CONTAINER" \
+		--restart unless-stopped \
+		-p ${PORT}:${PORT} \
+		-v "$DATA_DIR":/data \
+		-v "$MUSIC_DIR":/music:ro \
+		"$IMAGE" 2>&1 | logger -t navidrome-autoinit
+
+	if docker ps | grep -q "$CONTAINER"; then
+		logger -t navidrome-autoinit "$CONTAINER started successfully on port $PORT"
+		touch "$FLAG_FILE"
+	else
+		logger -t navidrome-autoinit "$CONTAINER failed to start, will retry next boot"
+	fi
+
+	return 0
+}