feat: Allow customizing the responses, flows in Captain (#11385)

- Ability to provide custom instructions to captain

<img width="1107" alt="Screenshot 2025-04-28 at 6 11 43 PM"
src="https://github.com/user-attachments/assets/f94cbccc-b4d8-48fd-b6b9-55524129bc50"
/>

app/javascript/dashboard/components-next/captain/PageLayout.vue

@@ -2,6 +2,7 @@
 import { computed } from 'vue';
 import { usePolicy } from 'dashboard/composables/usePolicy';
 import Button from 'dashboard/components-next/button/Button.vue';
+import BackButton from 'dashboard/components/widgets/BackButton.vue';
 import PaginationFooter from 'dashboard/components-next/pagination/PaginationFooter.vue';
 import Spinner from 'dashboard/components-next/spinner/Spinner.vue';
 import Policy from 'dashboard/components/policy.vue';
@@ -23,6 +24,10 @@ const props = defineProps({
     type: String,
     default: '',
   },
+  backUrl: {
+    type: [String, Object],
+    default: '',
+  },
   buttonPolicy: {
     type: Array,
     default: () => [],
@@ -39,6 +44,10 @@ const props = defineProps({
     type: Boolean,
     default: false,
   },
+  showKnowMore: {
+    type: Boolean,
+    default: true,
+  },
   isEmpty: {
     type: Boolean,
     default: false,
@@ -73,19 +82,23 @@ const handlePageChange = event => {
           class="flex items-start lg:items-center justify-between w-full py-6 lg:py-0 lg:h-20 gap-4 lg:gap-2 flex-col lg:flex-row"
         >
           <div class="flex gap-4 items-center">
+            <BackButton v-if="backUrl" :to="backUrl" />
             <slot name="headerTitle">
               <span class="text-xl font-medium text-n-slate-12">
                 {{ headerTitle }}
               </span>
             </slot>
-            <div v-if="!isEmpty" class="flex items-center gap-2">
+            <div
+              v-if="!isEmpty && showKnowMore"
+              class="flex items-center gap-2"
+            >
               <div class="w-0.5 h-4 rounded-2xl bg-n-weak" />
               <slot name="knowMore" />
             </div>
           </div>
 
           <div
-            v-if="!showPaywall"
+            v-if="!showPaywall && buttonLabel"
             v-on-clickaway="() => emit('close')"
             class="relative group/campaign-button"
           >
@@ -104,7 +117,7 @@ const handlePageChange = event => {
       </div>
     </header>
     <main class="flex-1 px-6 overflow-y-auto xl:px-0">
-      <div class="w-full max-w-[60rem] mx-auto py-4">
+      <div class="w-full max-w-[60rem] h-full mx-auto py-4">
         <slot v-if="!showPaywall" name="controls" />
         <div
           v-if="isFetching"