fix: community module integration fixes -- slots payload + ForkResult type

- PublishPayload gains optional slots field; PublishPlanModal maps
  plan.slots into the payload so the backend can compute element
  snapshot scores (seasoning, richness, etc.) from actual recipes
- plan-forked emit type updated to ForkResult across CommunityFeedPanel
  and RecipesView so forked_from is preserved for future navigation

frontend/src/components/CommunityFeedPanel.vue

@@ -118,12 +118,13 @@
 <script setup lang="ts">
 import { ref, onMounted, onUnmounted } from 'vue'
 import { useCommunityStore } from '../stores/community'
+import type { ForkResult } from '../stores/community'
 import CommunityPostCard from './CommunityPostCard.vue'
 import PublishPlanModal from './PublishPlanModal.vue'
 import HallOfChaosView from './HallOfChaosView.vue'
 
 const emit = defineEmits<{
-  'plan-forked': [payload: { plan_id: number; week_start: string }]
+  'plan-forked': [payload: ForkResult]
 }>()
 
 const store = useCommunityStore()
@@ -201,7 +202,7 @@ async function handleFork(slug: string) {
   try {
     const result = await store.forkPost(slug)
     showToast('Plan added to your week.', 'success')
-    emit('plan-forked', { plan_id: result.plan_id, week_start: result.week_start })
+    emit('plan-forked', result)
   } catch (err: unknown) {
     showToast(err instanceof Error ? err.message : 'Could not fork this plan.', 'error')
   }

frontend/src/components/PublishPlanModal.vue

@@ -202,6 +202,9 @@ async function onSubmit() {
   if (description.value.trim()) payload.description = description.value.trim()
   if (pseudonymName.value.trim()) payload.pseudonym_name = pseudonymName.value.trim()
   if (props.plan?.id != null) payload.plan_id = props.plan.id
+  if (props.plan?.slots?.length) {
+    payload.slots = props.plan.slots.map(({ day, meal_type, recipe_id }) => ({ day, meal_type, recipe_id }))
+  }
 
   submitting.value = true
   try {

frontend/src/components/RecipesView.vue

@@ -563,6 +563,7 @@ import RecipeDetailPanel from './RecipeDetailPanel.vue'
 import RecipeBrowserPanel from './RecipeBrowserPanel.vue'
 import SavedRecipesPanel from './SavedRecipesPanel.vue'
 import CommunityFeedPanel from './CommunityFeedPanel.vue'
+import type { ForkResult } from '../stores/community'
 import type { RecipeSuggestion, GroceryLink } from '../services/api'
 import { recipesAPI } from '../services/api'
 
@@ -592,7 +593,7 @@ function onTabKeydown(e: KeyboardEvent) {
 }
 
 // Community tab: navigate to Find tab after a plan fork (full plan view deferred to Task 9)
-function onPlanForked(_payload: { plan_id: number; week_start: string }) {
+function onPlanForked(_payload: ForkResult) {
   activeTab.value = 'find'
 }
 

frontend/src/stores/community.ts

@@ -63,6 +63,7 @@ export interface PublishPayload {
   plan_id?: number
   recipe_id?: number
   outcome_notes?: string
+  slots?: CommunityPostSlot[]
 }
 
 export interface PublishResult {