SSR module: rebuilt on TYPO3 module layout, cards and core components

Ticket 0096-FE (aehm): the module now uses the core Module layout (DocHeader with reload and shortcut, module-body spacing), a Status card as description list with one badge style, an Actions card with core buttons and icons, help texts below the buttons and TYPO3 modal confirmations (ssr-module.js) instead of window.confirm, and three protocol cards. Purge protocol rows show a one-line time, the trigger as badge plus user, paths as count + first two + disclosure, result and duration right-aligned, with 30/100/500 row switches. Status shows the last health sample with relative age and the cache limit (new optional SSR_CACHE_LIMIT_MB in var/vitec-ssr-purge.env, SsrPurgeService::getCacheLimitMb). ssr-warm-progress.js now also disables the Warm button with a spinner while a run is active. backend-ssr.css holds only layout glue with core CSS variables (dark mode safe). Verified in the backend: layout, modal, running progress bar, protocol tables.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

packages/vitec/Resources/Public/Css/backend-ssr.css

@@ -0,0 +1,55 @@
+/* VITEC SSR module (web_vitecssr): layout glue on top of TYPO3's own
+   components - cards, badges, buttons and tables come from the core. */
+
+.ssr-status {
+    margin: 0;
+}
+.ssr-status-row {
+    display: grid;
+    grid-template-columns: 9rem minmax(0, 1fr);
+    gap: 0 1rem;
+    padding: .75rem 0;
+    border-bottom: 1px solid var(--typo3-component-border-color, #dee2e6);
+}
+.ssr-status-row:first-child {
+    padding-top: 0;
+}
+.ssr-status-row:last-child {
+    border-bottom: 0;
+    padding-bottom: 0;
+}
+.ssr-status-row dt {
+    font-weight: normal;
+    color: var(--typo3-text-color-secondary, #6c757d);
+}
+.ssr-status-row dd {
+    margin: 0;
+    min-width: 0;
+}
+@media (max-width: 575.98px) {
+    .ssr-status-row {
+        grid-template-columns: minmax(0, 1fr);
+        gap: .25rem 0;
+    }
+}
+
+.ssr-action + .ssr-action {
+    margin-top: 1.5rem;
+    padding-top: 1.5rem;
+    border-top: 1px solid var(--typo3-component-border-color, #dee2e6);
+}
+.ssr-action-title {
+    font-size: 1rem;
+    font-weight: 600;
+    margin: 0 0 .5rem;
+}
+
+#ssr-warm-button .ssr-warm-busy {
+    display: none;
+}
+#ssr-warm-button.is-running .ssr-warm-idle {
+    display: none;
+}
+#ssr-warm-button.is-running .ssr-warm-busy {
+    display: inline;
+}