Decouple stream cancellation and clarify failover rules

apps/web/src/styles/pages.css

@@ -1881,6 +1881,71 @@
   padding: 8px 10px;
 }
 
+.runnerActionMatrix {
+  display: grid;
+  gap: 10px;
+}
+
+.runnerActionIntro {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 12px;
+}
+
+.runnerActionIntro strong {
+  color: var(--text-normal);
+}
+
+.runnerActionIntro small,
+.runnerActionGroup small {
+  color: var(--muted-foreground);
+  font-size: var(--font-size-xs);
+  font-weight: var(--font-weight-regular);
+  line-height: 1.4;
+}
+
+.runnerActionGrid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 10px;
+}
+
+.runnerActionGroup {
+  display: grid;
+  gap: 8px;
+  padding: 10px;
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  background: #fff;
+}
+
+.runnerActionGroup > span {
+  display: grid;
+  gap: 2px;
+}
+
+.runnerActionGroup strong {
+  color: var(--text-normal);
+  font-size: var(--font-size-sm);
+}
+
+.runnerSupplementalRules {
+  display: grid;
+  gap: 2px;
+  padding-top: 6px;
+}
+
+.runnerSupplementalRules strong {
+  color: var(--text-normal);
+}
+
+.runnerSupplementalRules small {
+  color: var(--muted-foreground);
+  font-size: var(--font-size-xs);
+  line-height: 1.4;
+}
+
 .runtimePolicyActions {
   display: flex;
   justify-content: flex-end;
@@ -1933,6 +1998,7 @@
   .runtimePolicyGrid,
   .runtimePolicyFormBody,
   .runtimePolicyRows,
+  .runnerActionGrid,
   .accessPermissionGrid,
   .accessTreeToolbar,
   .apiKeyCreateDialogBody,
@@ -1940,6 +2006,11 @@
     grid-template-columns: 1fr;
   }
 
+  .runnerActionIntro {
+    align-items: flex-start;
+    flex-direction: column;
+  }
+
   .platformModelChoice {
     grid-template-columns: 1fr auto;
   }