Add service update notification and version check enhancements

Introduced a front-end mechanism to notify users of available service updates and enhanced the service info page to reflect update status dynamically. Removed backend audit log writes for version checks to streamline operations and improve performance. Updated styling to visually highlight update notifications.

frontend/src/App.jsx

@@ -18,7 +18,7 @@ function Protected({ children }) {
 }
 
 function Layout({ children }) {
-  const { me, logout, uiMode, setUiMode, alertToasts, dismissAlertToast } = useAuth();
+  const { me, logout, uiMode, setUiMode, alertToasts, dismissAlertToast, serviceUpdateAvailable } = useAuth();
   const navigate = useNavigate();
   const navClass = ({ isActive }) => `nav-btn${isActive ? " active" : ""}`;
 
@@ -62,7 +62,10 @@ function Layout({ children }) {
             </span>
             <span className="nav-label">Alerts</span>
           </NavLink>
-          <NavLink to="/service-info" className={navClass}>
+          <NavLink
+            to="/service-info"
+            className={({ isActive }) => `nav-btn${isActive ? " active" : ""}${serviceUpdateAvailable ? " update-available" : ""}`}
+          >
             <span className="nav-icon" aria-hidden="true">
               <svg viewBox="0 0 24 24">
                 <path d="M12 22a10 10 0 1 0 0-20 10 10 0 0 0 0 20zm0-11v6m0-10h.01" />

frontend/src/pages/ServiceInfoPage.jsx

@@ -14,7 +14,7 @@ function formatUptime(seconds) {
 }
 
 export function ServiceInfoPage() {
-  const { tokens, refresh } = useAuth();
+  const { tokens, refresh, serviceInfo } = useAuth();
   const [info, setInfo] = useState(null);
   const [message, setMessage] = useState("");
   const [error, setError] = useState("");
@@ -30,6 +30,10 @@ export function ServiceInfoPage() {
     load().catch((e) => setError(String(e.message || e)));
   }, []);
 
+  useEffect(() => {
+    if (serviceInfo) setInfo(serviceInfo);
+  }, [serviceInfo]);
+
   const checkNow = async () => {
     try {
       setBusy(true);
@@ -56,14 +60,28 @@ export function ServiceInfoPage() {
   }
 
   return (
-    <div>
+    <div className="service-page">
       <h2>Service Information</h2>
       <p className="muted">Runtime details, installed version, and update check status for this NexaPG instance.</p>
       {error && <div className="card error">{error}</div>}
-      {message && <div className="test-connection-result ok">{message}</div>}
+      {message && <div className="test-connection-result ok service-msg">{message}</div>}
+
+      <div className={`card service-hero ${info.update_available ? "update" : "ok"}`}>
+        <div>
+          <strong className="service-hero-title">
+            {info.update_available ? `Update available: ${info.latest_version}` : "Service is up to date"}
+          </strong>
+          <p className="muted service-hero-sub">
+            Automatic release checks run every 30 seconds. Source: official NexaPG upstream releases.
+          </p>
+        </div>
+        <button type="button" className="secondary-btn" disabled={busy} onClick={checkNow}>
+          Check Now
+        </button>
+      </div>
 
       <div className="grid three">
-        <div className="card">
+        <div className="card service-card">
           <h3>Application</h3>
           <div className="overview-kv">
             <span>App Name</span>
@@ -74,7 +92,7 @@ export function ServiceInfoPage() {
             <strong>{info.api_prefix}</strong>
           </div>
         </div>
-        <div className="card">
+        <div className="card service-card">
           <h3>Runtime</h3>
           <div className="overview-kv">
             <span>Host</span>
@@ -85,7 +103,7 @@ export function ServiceInfoPage() {
             <strong>{formatUptime(info.uptime_seconds)}</strong>
           </div>
         </div>
-        <div className="card">
+        <div className="card service-card">
           <h3>Version Status</h3>
           <div className="overview-kv">
             <span>Current NexaPG Version</span>
@@ -93,21 +111,16 @@ export function ServiceInfoPage() {
             <span>Latest Known Version</span>
             <strong>{info.latest_version || "-"}</strong>
             <span>Update Status</span>
-            <strong className={info.update_available ? "lag-bad" : "pill primary"}>
+            <strong className={info.update_available ? "service-status-update" : "service-status-ok"}>
               {info.update_available ? "Update available" : "Up to date"}
             </strong>
             <span>Last Check</span>
             <strong>{info.last_checked_at ? new Date(info.last_checked_at).toLocaleString() : "never"}</strong>
           </div>
-          <div className="form-actions" style={{ marginTop: 12 }}>
-            <button type="button" className="secondary-btn" disabled={busy} onClick={checkNow}>
-              Check for Updates
-            </button>
-          </div>
         </div>
       </div>
 
-      <div className="card">
+      <div className="card service-card">
         <h3>Release Source</h3>
         <p className="muted">
           Update checks run against the official NexaPG repository. This source is fixed in code and cannot be changed
@@ -121,7 +134,7 @@ export function ServiceInfoPage() {
         </div>
       </div>
 
-      <div className="card">
+      <div className="card service-card">
         <h3>Version Control Policy</h3>
         <p className="muted">
           Version and update-source settings are not editable in the app. Only code maintainers of the official NexaPG

frontend/src/state.jsx

@@ -29,6 +29,7 @@ export function AuthProvider({ children }) {
   const [uiMode, setUiModeState] = useState(loadUiMode);
   const [alertStatus, setAlertStatus] = useState({ warnings: [], alerts: [], warning_count: 0, alert_count: 0 });
   const [alertToasts, setAlertToasts] = useState([]);
+  const [serviceInfo, setServiceInfo] = useState(null);
   const knownAlertKeysRef = useRef(new Set());
   const hasAlertSnapshotRef = useRef(false);
 
@@ -175,6 +176,49 @@ export function AuthProvider({ children }) {
     };
   }, [tokens?.accessToken, tokens?.refreshToken]);
 
+  useEffect(() => {
+    if (!tokens?.accessToken) {
+      setServiceInfo(null);
+      return;
+    }
+
+    let mounted = true;
+
+    const request = async (path, method = "GET") => {
+      const doFetch = async (accessToken) =>
+        fetch(`${API_URL}${path}`, {
+          method,
+          headers: { Authorization: `Bearer ${accessToken}` },
+        });
+
+      let res = await doFetch(tokens.accessToken);
+      if (res.status === 401 && tokens.refreshToken) {
+        const refreshed = await refresh();
+        if (refreshed?.accessToken) {
+          res = await doFetch(refreshed.accessToken);
+        }
+      }
+      if (!res.ok) return null;
+      return res.json();
+    };
+
+    const runServiceCheck = async () => {
+      await request("/service/info/check", "POST");
+      const info = await request("/service/info", "GET");
+      if (mounted && info) setServiceInfo(info);
+    };
+
+    runServiceCheck().catch(() => {});
+    const timer = setInterval(() => {
+      runServiceCheck().catch(() => {});
+    }, 30000);
+
+    return () => {
+      mounted = false;
+      clearInterval(timer);
+    };
+  }, [tokens?.accessToken, tokens?.refreshToken]);
+
   const setUiMode = (nextMode) => {
     const mode = nextMode === "easy" ? "easy" : "dba";
     setUiModeState(mode);
@@ -193,8 +237,10 @@ export function AuthProvider({ children }) {
       alertStatus,
       alertToasts,
       dismissAlertToast,
+      serviceInfo,
+      serviceUpdateAvailable: !!serviceInfo?.update_available,
     }),
-    [tokens, me, uiMode, alertStatus, alertToasts]
+    [tokens, me, uiMode, alertStatus, alertToasts, serviceInfo]
   );
   return <AuthCtx.Provider value={value}>{children}</AuthCtx.Provider>;
 }

frontend/src/styles.css

@@ -114,6 +114,27 @@ a {
   background: linear-gradient(180deg, #74e8ff, #25bdf3);
 }
 
+.nav-btn.update-available {
+  border-color: #c7962f;
+  background: linear-gradient(180deg, #3e2f14, #2f240f);
+  color: #ffecc4;
+  box-shadow: inset 0 0 0 1px #f6c75a38, 0 8px 20px #2d1d0680;
+}
+
+.nav-btn.update-available .nav-icon {
+  border-color: #d3a240;
+  background: linear-gradient(180deg, #5a441a, #433312);
+}
+
+.nav-btn.update-available:hover {
+  border-color: #ffd46e;
+  background: linear-gradient(180deg, #523d18, #3b2d12);
+}
+
+.nav-btn.update-available::before {
+  background: linear-gradient(180deg, #ffe4a3, #e0ac3e);
+}
+
 .nav-btn.admin-nav {
   border-color: #5b4da1;
   background: linear-gradient(180deg, #1c2a58, #18224a);
@@ -1279,6 +1300,51 @@ td {
   color: #9eb8d6;
 }
 
+.service-page .service-msg {
+  margin-bottom: 10px;
+}
+
+.service-hero {
+  margin-bottom: 12px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.service-hero.ok {
+  border-color: #2f8f63;
+  background: linear-gradient(90deg, #123827, #102e42);
+}
+
+.service-hero.update {
+  border-color: #dfab3e;
+  background: linear-gradient(90deg, #4a3511, #2f2452);
+  box-shadow: 0 12px 28px #2b1f066b;
+}
+
+.service-hero-title {
+  display: inline-block;
+  font-size: 18px;
+  margin-bottom: 3px;
+}
+
+.service-hero-sub {
+  margin: 0;
+}
+
+.service-card {
+  box-shadow: 0 10px 24px #0416343d;
+}
+
+.service-status-ok {
+  color: #6ef0ad;
+}
+
+.service-status-update {
+  color: #ffd77e;
+}
+
 .alerts-subtitle {
   margin-top: 2px;
   color: #a6c0df;