feat(helpdesk): simplify settings by merging recommendations and controlling into automation tab

Merge 'System recommendations' (5 rules × 3-4 fields) and 'Controlling'
(4 rules × 2 fields) into a single 'Automation' tab with two sections:
Recommendations and Risk monitoring. Each rule now shows only a toggle and
help text; priority fields removed (hardcoded in action). Advanced disclosure
for recommendation thresholds. Fix nav highlighting bug where 'Kunden' was
also highlighted when Settings was active.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

modules/helpdesk/web/css/helpdesk.css

@@ -26,6 +26,115 @@
     }
   }
 
+  /* Automation tab: compact rule list */
+  .helpdesk-settings-rules {
+    display: grid;
+    gap: calc(var(--app-spacing) * 0.5);
+    margin-top: calc(var(--app-spacing) * 0.5);
+  }
+
+  .helpdesk-settings-rule {
+    display: grid;
+    grid-template-columns: auto 1fr;
+    gap: 0 calc(var(--app-spacing) * 0.5);
+    align-items: center;
+    padding: calc(var(--app-spacing) * 0.4) 0;
+    border-bottom: 1px solid color-mix(in srgb, var(--app-contrast, #000) 8%, transparent);
+  }
+
+  .helpdesk-settings-rule:last-child {
+    border-bottom: none;
+  }
+
+  .helpdesk-settings-rule > input[type="checkbox"] {
+    grid-row: 1 / 3;
+  }
+
+  .helpdesk-settings-rule-label {
+    font-weight: 500;
+  }
+
+  .helpdesk-settings-rule > small {
+    grid-column: 2;
+    opacity: 0.65;
+  }
+
+  /* Risk monitoring: rule with inline threshold */
+  .helpdesk-settings-rule-with-threshold {
+    grid-template-columns: auto 1fr auto;
+  }
+
+  .helpdesk-settings-rule-toggle {
+    display: grid;
+    grid-template-columns: auto 1fr;
+    gap: 0 calc(var(--app-spacing) * 0.5);
+    align-items: center;
+    grid-column: 1 / 3;
+    cursor: pointer;
+  }
+
+  .helpdesk-settings-rule-toggle > input[type="checkbox"] {
+    grid-row: 1 / 3;
+  }
+
+  .helpdesk-settings-rule-toggle > small {
+    grid-column: 2;
+    opacity: 0.65;
+  }
+
+  .helpdesk-settings-rule-threshold {
+    grid-row: 1 / 3;
+    min-width: 6rem;
+    max-width: 8rem;
+  }
+
+  .helpdesk-settings-rule-threshold > span {
+    font-size: 0.8em;
+    opacity: 0.65;
+  }
+
+  @media (max-width: 760px) {
+    .helpdesk-settings-rule-with-threshold {
+      grid-template-columns: auto 1fr;
+    }
+
+    .helpdesk-settings-rule-threshold {
+      grid-column: 1 / -1;
+      max-width: none;
+    }
+  }
+
+  /* Advanced options disclosure */
+  .helpdesk-settings-advanced {
+    margin-top: calc(var(--app-spacing) * 0.5);
+    border-top: 1px solid color-mix(in srgb, var(--app-contrast, #000) 8%, transparent);
+    padding-top: calc(var(--app-spacing) * 0.4);
+  }
+
+  .helpdesk-settings-advanced > summary {
+    cursor: pointer;
+    font-size: 0.85em;
+    opacity: 0.7;
+    font-weight: 500;
+  }
+
+  .helpdesk-settings-advanced > summary:hover {
+    opacity: 1;
+  }
+
+  .helpdesk-settings-advanced-grid {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: calc(var(--app-spacing) * 0.5);
+    margin-top: calc(var(--app-spacing) * 0.5);
+  }
+
+  @media (max-width: 760px) {
+    .helpdesk-settings-advanced-grid {
+      grid-template-columns: minmax(0, 1fr);
+    }
+  }
+
   /* Clickable rows — shared between search results and ticket list */
   .app-clickable-row {
     cursor: pointer;