Add current_period tracking to subscriptions, document prediction engine, and refactor station list UI

Add current_period_start, current_period_end, and stripe_data columns to subscriptions table via migration. Extend Subscription model with datetime casts for new fields. Create comprehensive prediction engine documentation covering signals, aggregation, confidence calibration, and weekly summary logic. Add PredictionFull Vue component displaying action label, reasoning, and 7-day context. Refactor StationList to collapse outdated stations behind expandable section. Add UpsellBanner component with station count formatting. Create .claude/settings.json denying .env file access. Add todo.md tracking Stripe dashboard setup, production deployment steps, and E2E QA checklist. Update .env.example with fuel-finder credentials, Anthropic config, and complete Stripe price IDs.

.env.example

@@ -1,8 +1,8 @@
-APP_NAME=Laravel
+APP_NAME="Fuel Finder"
 APP_ENV=local
 APP_KEY=
 APP_DEBUG=true
-APP_URL=http://localhost
+APP_URL=http://fuel-price.test
 
 APP_LOCALE=en
 APP_FALLBACK_LOCALE=en
@@ -20,18 +20,18 @@ LOG_STACK=single
 LOG_DEPRECATIONS_CHANNEL=null
 LOG_LEVEL=debug
 
-DB_CONNECTION=sqlite
-# DB_HOST=127.0.0.1
-# DB_PORT=3306
-# DB_DATABASE=laravel
-# DB_USERNAME=root
-# DB_PASSWORD=
+DB_CONNECTION=mysql
+ DB_HOST=127.0.0.1
+ DB_PORT=3306
+ DB_DATABASE=fuel-price
+ DB_USERNAME=fuel-price
+ DB_PASSWORD=password
 
 SESSION_DRIVER=database
 SESSION_LIFETIME=120
 SESSION_ENCRYPT=false
 SESSION_PATH=/
-SESSION_DOMAIN=null
+SESSION_DOMAIN=.fuel-price.test
 
 BROADCAST_CONNECTION=log
 FILESYSTEM_DISK=local
@@ -64,19 +64,29 @@ AWS_USE_PATH_STYLE_ENDPOINT=false
 
 VITE_APP_NAME="${APP_NAME}"
 
-FUELALERT_API_KEY=
+FUEL_FINDER_CLIENT_ID=
+FUEL_FINDER_CLIENT_SECRET=
+FUEL_FINDER_BASE_URL=https://www.fuel-finder.service.gov.uk/api/v1
+
+ANTHROPIC_API_KEY=
+ANTHROPIC_MODEL=claude-haiku-4-5
 
 FRED_API_KEY=
-EIA_API_KEY=            # US EIA Open Data API key — register free at eia.gov/opendata
+API_SECRET_KEY=
+EIA_API_KEY=
+
+LLM_PREDICTION_PROVIDER=anthropic
 
 STRIPE_KEY=
 STRIPE_SECRET=
 STRIPE_WEBHOOK_SECRET=
 CASHIER_CURRENCY=gbp
 
-STRIPE_PRICE_BASIC_MONTHLY=
-STRIPE_PRICE_BASIC_ANNUAL=
-STRIPE_PRICE_PLUS_MONTHLY=
-STRIPE_PRICE_PLUS_ANNUAL=
+STRIPE_PRICE_BASIC_MONTHLY=price_1TM3cwJuhjW3IKHlJCHz0xmU
+STRIPE_PRICE_BASIC_ANNUAL=price_1TM3nlJuhjW3IKHlwcHF5W9v
+STRIPE_PRICE_PLUS_MONTHLY=price_1TM3oqJuhjW3IKHlbQUMhrnm
+STRIPE_PRICE_PLUS_ANNUAL=price_1TM3pXJuhjW3IKHlfQenHsf1
 STRIPE_PRICE_PRO_MONTHLY=
 STRIPE_PRICE_PRO_ANNUAL=
+
+SANCTUM_STATEFUL_DOMAINS=fuel-price.test