- OpenWrtGateway.vue: add "Install TollGate" button when not installed;
tracks connected credentials for reuse in the provision call
- install.rs: fall back to wget download from GitHub releases when the
package is not in any opkg feed (mips_24kc and other arches supported)
- openwrt.rs: provision-tollgate now falls back to saved router_config
for credentials, matching the behaviour of get-status
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>