fix(admin): bust admin.js browser cache with ?v=3, disable immutable static cache

Quarkus defaults to Cache-Control: immutable, max-age=86400 for static files.
The immutable flag means browsers ignore hard-refresh and serve stale JS for 24h.
Fix: version query string on admin.js URLs, max-age=300 (5min), clear immutable-paths.

Co-Authored-By: Mira Rehfeld <noreply@anthropic.com>

apix-admin/src/main/resources/application.properties

@@ -12,3 +12,7 @@ apix.admin.key=${APIX_API_KEY:dev-insecure-key-change-in-prod}
 
 # Session cookie name
 apix.admin.cookie-name=apix_admin_session
+
+# Static assets — short cache so deploys take effect without hard-refresh
+quarkus.http.static-resources.max-age=300
+quarkus.http.static-resources.immutable-paths=

apix-admin/src/main/resources/templates/DashboardResource/global.html

@@ -106,6 +106,6 @@ nav {
 <script>var __D = {statsJson.raw};</script>
 <script src="https://cdn.jsdelivr.net/npm/d3@7/dist/d3.min.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/topojson-client@3/dist/topojson-client.min.js"></script>
-<script src="/admin.js"></script>
+<script src="/admin.js?v=3"></script>
 </body>
 </html>

apix-admin/src/main/resources/templates/DashboardResource/sandbox.html

@@ -149,7 +149,7 @@ button.promote:hover { background: #2ea043; }
 <script>var __D = {dataJson.raw};</script>
 <script src="https://cdn.jsdelivr.net/npm/d3@7/dist/d3.min.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/topojson-client@3/dist/topojson-client.min.js"></script>
-<script src="/admin.js"></script>
+<script src="/admin.js?v=3"></script>
 <script>
 (function () {
   const INTERVAL = 5000;