Update AI planner integration, docs, and config

src/pages/itinerary/index.vue

@@ -110,6 +110,13 @@ const routeTags = computed(() => {
 })
 
 const planningModeLabel = computed(() => plan.value?.itinerary.planningMode === 'custom' ? '自选规划' : '快速规划')
+const planningSourceLabel = computed(() => {
+  if (plan.value?.source === 'remote_ai')
+    return '真实 AI 推荐'
+  if (plan.value?.source === 'remote_mock')
+    return '远端演示规划'
+  return '本地智能规划'
+})
 const durationFitNotice = computed(() => plan.value ? getDurationFitNotice(plan.value.itinerary.durationFitStatus) : null)
 
 function loadStoredPlan() {
@@ -294,7 +301,7 @@ onReady(initializeMap)
       <view class="route-hero__top">
         <view class="route-hero__label">
           <text class="route-hero__spark">✦</text>
-          {{ planningModeLabel }}
+          {{ planningModeLabel }} · {{ planningSourceLabel }}
         </view>
         <button @click="openPlanner">重新规划</button>
       </view>