fix: NPM remote toggle auto-save, proxy resync on remote change, webhook URL as path

- Remote NPM toggle now auto-saves immediately when toggled
- Toggling npm_remote triggers proxy resync (re-creates routes with server_ip or container name)
- Webhook URL shows just the path (/api/webhook/{secret}) instead of full URL with wrong domain
- Fix tag dropdown: resolve registry ID from name before fetching tags
- Remove unused fmt import

web/src/routes/projects/[id]/+page.svelte

@@ -158,7 +158,12 @@
 
 		tagsLoading = true;
 		try {
-			availableTags = await api.listRegistryTags(project.registry, project.image);
+			// Look up registry ID from name.
+			const registries = await api.listRegistries();
+			const reg = registries.find(r => r.name === project?.registry);
+			if (reg) {
+				availableTags = await api.listRegistryTags(reg.id, project.image);
+			}
 		} catch {
 			availableTags = [];
 		} finally {

web/src/routes/settings/npm/+page.svelte

@@ -130,7 +130,26 @@
 		} catch { sslCertName = `Certificate #${sslCertificateId}`; }
 	}
 
-	async function init() { await loadData(); await resolveCertName(); }
+	let initialized = $state(false);
+
+	async function saveNpmRemote(value: boolean) {
+		try {
+			await updateSettings({ npm_remote: value } as any);
+			toasts.success($t('settingsCredentials.saved'));
+		} catch (err) {
+			toasts.error(err instanceof Error ? err.message : $t('settingsCredentials.saveFailed'));
+		}
+	}
+
+	// Auto-save npm_remote when toggled (skip initial load).
+	$effect(() => {
+		const val = npmRemote;
+		if (initialized) {
+			saveNpmRemote(val);
+		}
+	});
+
+	async function init() { await loadData(); await resolveCertName(); initialized = true; }
 	$effect(() => { init(); });
 </script>