Remove prediction API endpoint and integrate into stations search

Consolidate prediction functionality by merging /api/prediction endpoint into /api/stations response. Move prediction logic from PredictionController into StationController, returning prediction data alongside station results. Replace usePrediction composable with unified useStations that returns {stations, meta, prediction}. Remove PredictionRequest, related tests, and unused Vue components (FuelFinderTest, MapTest, RecommendationTest, StationListTest). Add PredictionFull component and UpsellBanner. Extend NationalFuelPredictionService to include weekly_summary (7-day series, yesterday/today averages, cheapest/priciest days) and oil signal from price_predictions table. Update Home.vue to consume prediction from stations response. Add Plan::resolveCadenceForUser helper and configure Cashier to use custom Subscription model.

resources/js/components/PredictionCard.vue

@@ -29,40 +29,13 @@
         </div>
 
         <!-- Paid: full prediction -->
-        <div
-            v-else-if="prediction"
-            class="p-6 bg-white rounded-2xl border border-zinc-300 space-y-4"
-        >
-            <p class="text-xs font-bold uppercase tracking-widest text-zinc-500">Price Prediction</p>
-
-            <h3
-                :class="['text-2xl font-black', actionTextColor]"
-            >
-                {{ actionLabel }}
-            </h3>
-
-            <div class="w-full h-2 bg-zinc-200 rounded-full overflow-hidden">
-                <div
-                    :class="['h-full rounded-full transition-all', actionBarColor]"
-                    :style="{ width: prediction.confidence_score + '%' }"
-                ></div>
-            </div>
-
-            <p class="text-sm text-zinc-500 leading-relaxed">{{ prediction.reasoning }}</p>
-
-            <div class="flex flex-wrap items-center gap-x-4 gap-y-1 text-xs text-zinc-500 font-medium">
-                <span>Avg: {{ prediction.current_avg }}p</span>
-                <span>Confidence: {{ prediction.confidence_label }}</span>
-                <span v-if="prediction.predicted_change_pence">
-                    {{ prediction.predicted_change_pence > 0 ? '+' : '' }}{{ prediction.predicted_change_pence.toFixed(1) }}p expected
-                </span>
-            </div>
-        </div>
+        <PredictionFull v-else :prediction="prediction" />
     </div>
 </template>
 
 <script setup>
 import { computed } from 'vue'
+import PredictionFull from './PredictionFull.vue'
 
 const props = defineProps({
     prediction: { type: Object, default: null },
@@ -70,31 +43,6 @@ const props = defineProps({
     isPaidTier: { type: Boolean, default: false },
 })
 
-const actionLabel = computed(() => {
-    if (!props.prediction) return ''
-    return {
-        fill_now: 'Fill up now',
-        wait: 'Wait — prices falling',
-        no_signal: 'No clear signal',
-    }[props.prediction.action] ?? 'Check local prices'
-})
-
-const actionTextColor = computed(() => {
-    if (!props.prediction) return 'text-zinc-800'
-    return {
-        fill_now: 'text-mauve',
-        wait: 'text-teal',
-    }[props.prediction.action] ?? 'text-tan'
-})
-
-const actionBarColor = computed(() => {
-    if (!props.prediction) return 'bg-zinc-400'
-    return {
-        fill_now: 'bg-mauve',
-        wait: 'bg-teal',
-    }[props.prediction.action] ?? 'bg-tan'
-})
-
 const direction = computed(() => props.prediction?.predicted_direction ?? 'stable')
 
 const genericSentence = computed(() => ({