refactor: Enhance health check target queries to use FQDN for hostname resolution and improve group health check logic in the database layer

apps/api/dist/server.js

@@ -1847,6 +1847,7 @@ async function createGroup2(db, cf, body) {
 async function updateGroup2(db, cf, id, body) {
   const groupType = body.type?.trim() || "custom";
   const previous = repos6.getServiceGroup(db, id);
+  const name = body.name ?? previous.name;
   const oldDomain = previous.domain?.trim();
   if (oldDomain) {
     await cleanupStaleGroupFqdnBindings(db, cf, id, oldDomain);
@@ -1856,7 +1857,7 @@ async function updateGroup2(db, cf, id, body) {
   let group = repos6.updateServiceGroup(
     db,
     id,
-    body.name,
+    name,
     groupType,
     body.icon ?? null,
     domain,
@@ -2562,6 +2563,7 @@ import { healthStatusQuerySchema } from "@cfdm/shared";
 
 // src/services/health-check-service.ts
 import { connect as connect2 } from "net";
+import { Agent, fetch as undiciFetch } from "undici";
 import { repos as repos10 } from "@cfdm/db";
 function tcpProbe(ip, port, timeoutMs) {
   return new Promise((resolve4) => {
@@ -2603,14 +2605,24 @@ function tcpProbe(ip, port, timeoutMs) {
 async function httpProbe(ip, target, timeoutMs) {
   const started = Date.now();
   const path = target.path?.trim() || "/";
-  const url = `http://${ip}${path.startsWith("/") ? path : `/${path}`}`;
-  const hostHeader = target.hostname || ip;
+  const pathWithSlash = path.startsWith("/") ? path : `/${path}`;
+  const port = target.port ?? 80;
+  const useTls = port === 443;
+  const urlHost = useTls ? target.hostname || ip : ip;
+  const url = `${useTls ? "https" : "http"}://${urlHost}${pathWithSlash}`;
+  const dispatcher = useTls && target.hostname ? new Agent({
+    connect: {
+      servername: target.hostname,
+      rejectUnauthorized: false
+    }
+  }) : void 0;
   try {
-    const response = await fetch(url, {
+    const response = await undiciFetch(url, {
       method: "GET",
-      headers: { Host: hostHeader },
+      headers: { Host: target.hostname || ip },
       signal: AbortSignal.timeout(timeoutMs),
-      redirect: "manual"
+      redirect: "manual",
+      dispatcher
     });
     const latency = Date.now() - started;
     if (target.expected_status != null) {