Restores the toggle implementation that shipped in the v1.96.4-dns-routes
release but was never committed to main, so weekly auto-builds (v1.98.x)
regressed and dropped the feature.
- manifest.json: register AcceptDNS / AcceptRoutes parameters
- param_bridge.c: cache, load, persist and live-reload the new params
- Tailscale_VPN_run: append --accept-dns / --accept-routes when enabled; add --reset
- html/index.html: add the Settings toggles
- arm_acap3 start.sh: log IP, version and auth URL to syslog via 'tailscale ip/version'
- arm_acap3 index.html: fetch tailscaled.log (symlinked into html/) in addition to
syslog so IP, version, tailnet and -> Running state are always available
- arm_acap3 Dockerfile: bake html/tailscaled.log symlink into .eap
- all variants index.html: upgrade 'connecting' (without auth URL) to 'connected'
when VAPIX list.cgi confirms Status=Running (was only upgrading from 'disconnected')