Bug 1 — port not propagated to wg0.conf:
The identity update path (wireguard_port via PUT /api/config) was calling
wireguard_manager.update_config() which only saves to a JSON file via
BaseServiceManager. wg0.conf was never updated, so after a container
restart the WireGuard interface would still listen on the old port.
Fix: call apply_config() instead — it writes ListenPort into wg0.conf.
Bug 2 — check_port_open ignored configured port:
check_port_open() checked for 'listening port' in wg show output but
never compared it against the configured port. A port-mismatch (e.g.
after config change but before restart) would return True — misleading.
Fix: require 'listening port: {configured_port}' to match exactly.
Tests added:
- test_check_port_open_wrong_port_returns_false
- test_check_port_open_explicit_port_matches
- test_check_port_open_explicit_port_mismatch
- test_wireguard_port_identity_change_calls_apply_config
- test_wireguard_port_same_value_does_not_call_apply_config
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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