Update AI planner integration, docs, and config

src/services/travel-assistant/service.ts

@@ -5,7 +5,6 @@ import {
   cloneTravelPreferences,
   createLocalPlan,
   createRecommendedPlan,
-  normalizePlanResponse,
   normalizePlanningRequest,
   normalizeTravelPreferences,
   type PlanningOrigin,
@@ -15,7 +14,7 @@ import {
   TravelValidationError,
 } from '@/domain/travel'
 import { createRemoteRecommendations, isRemoteTravelAssistantEnabled } from './remote'
-import { loadPlan, loadPreferences, savePreferences } from './storage'
+import { loadPlan, loadPlanningRequest, loadPreferences, savePlanningRequest, savePreferences } from './storage'
 
 interface LocalSession {
   plan: PlanResponse
@@ -55,7 +54,8 @@ function restoreLocalSession(conversationId: string): LocalSession | null {
   const preferences = loadPreferences()
   if (!plan || !preferences || plan.conversationId !== conversationId)
     return null
-  rememberLocalSession(plan, {
+  const storedRequest = loadPlanningRequest()
+  rememberLocalSession(plan, storedRequest ?? {
     mode: plan.itinerary.planningMode,
     preferences,
     durationMinutes: plan.itinerary.requestedMinutes,
@@ -118,11 +118,13 @@ export async function createPlan(
       remote.generationMode === 'real' ? 'remote_ai' : 'remote_mock',
     )
     rememberLocalSession(plan, request)
+    savePlanningRequest(request)
     return clonePlanResponse(plan, repository)
   }
 
   const plan = createLocalPlan(request, repository)
   rememberLocalSession(plan, request)
+  savePlanningRequest(request)
   return clonePlanResponse(plan, repository)
 }
 
@@ -153,6 +155,7 @@ export async function adjustPlan(conversationId: string, message: string): Promi
     adjusted.plan.source = session.plan.source
   }
   rememberLocalSession(adjusted.plan, adjusted.request)
+  savePlanningRequest(adjusted.request)
   savePreferences(adjusted.preferences)
   return clonePlanResponse(adjusted.plan, repository)
 }