Initial release: procd service and LuCI app for copyparty

OpenWrt procd service script and LuCI JavaScript interface for
copyparty (https://github.com/9001/copyparty), a self-hosted file
sharing server.

Features:
- procd service with UCI-driven volumes, accounts, and TLS cert
- LuCI view: settings, volume/account grids, live status + start/stop
- ACME TLS support via combined key+fullchain PEM (--cert flag)
- Auto-respawn and reload-on-config-change via service_triggers

install.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+# Install luci-app-copyparty onto an OpenWrt device.
+# Run on the device itself, or adapt for scp.
+
+set -e
+
+DEST_INIT=/etc/init.d/copyparty
+DEST_UCI=/etc/config/copyparty
+DEST_VIEW=/www/luci-static/resources/view/copyparty.js
+DEST_MENU=/usr/share/luci/menu.d/luci-app-copyparty.json
+DEST_ACL=/usr/share/rpcd/acl.d/luci-app-copyparty.json
+
+SCRIPT_DIR=$(dirname "$0")
+
+cp "$SCRIPT_DIR/etc/init.d/copyparty"                                   "$DEST_INIT"
+chmod +x "$DEST_INIT"
+
+[ -f "$DEST_UCI" ] || cp "$SCRIPT_DIR/etc/config/copyparty"             "$DEST_UCI"
+
+cp "$SCRIPT_DIR/www/luci-static/resources/view/copyparty.js"            "$DEST_VIEW"
+cp "$SCRIPT_DIR/usr/share/luci/menu.d/luci-app-copyparty.json"          "$DEST_MENU"
+cp "$SCRIPT_DIR/usr/share/rpcd/acl.d/luci-app-copyparty.json"           "$DEST_ACL"
+
+/etc/init.d/rpcd restart
+
+echo "Installed. Edit $DEST_UCI then: /etc/init.d/copyparty enable && /etc/init.d/copyparty start"