feat: 5-tier pricing, market ticker integration, and delivery stats

Major update spanning pricing, market data, and analytics:

- Pricing: Replace single-price service fees with 5-tier pricing for
  same-day, prime, and emergency deliveries across create/edit/finalize
- Market: Add Ticker_Price and CompanyPrice models with endpoints for
  live commodity prices (HO, CL, RB) and competitor price tracking
- Stats: Add daily/weekly/monthly gallons endpoints with multi-year
  comparison and YoY totals for the stats dashboard
- Delivery: Add map and history endpoints, fix finalize null-driver crash
- Schema: Change fill_location from INTEGER to VARCHAR(250), add
  pre_load normalization for customer updates, fix admin auth check

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/classes/pricing.py

@@ -17,9 +17,33 @@ class Pricing_Oil_Oil(db.Model):
     price_from_supplier = db.Column(db.DECIMAL(6, 2))
     price_for_customer = db.Column(db.DECIMAL(6, 2))
     price_for_employee = db.Column(db.DECIMAL(6, 2))
+    
+    # Legacy single-tier pricing (kept for backward compatibility)
     price_same_day = db.Column(db.DECIMAL(6, 2))
     price_prime = db.Column(db.DECIMAL(6, 2))
     price_emergency = db.Column(db.DECIMAL(6, 2))
+    
+    # New 5-tier pricing for same_day service
+    price_same_day_tier1 = db.Column(db.DECIMAL(6, 2))
+    price_same_day_tier2 = db.Column(db.DECIMAL(6, 2))
+    price_same_day_tier3 = db.Column(db.DECIMAL(6, 2))
+    price_same_day_tier4 = db.Column(db.DECIMAL(6, 2))
+    price_same_day_tier5 = db.Column(db.DECIMAL(6, 2))
+    
+    # New 5-tier pricing for prime service
+    price_prime_tier1 = db.Column(db.DECIMAL(6, 2))
+    price_prime_tier2 = db.Column(db.DECIMAL(6, 2))
+    price_prime_tier3 = db.Column(db.DECIMAL(6, 2))
+    price_prime_tier4 = db.Column(db.DECIMAL(6, 2))
+    price_prime_tier5 = db.Column(db.DECIMAL(6, 2))
+    
+    # New 5-tier pricing for emergency service
+    price_emergency_tier1 = db.Column(db.DECIMAL(6, 2))
+    price_emergency_tier2 = db.Column(db.DECIMAL(6, 2))
+    price_emergency_tier3 = db.Column(db.DECIMAL(6, 2))
+    price_emergency_tier4 = db.Column(db.DECIMAL(6, 2))
+    price_emergency_tier5 = db.Column(db.DECIMAL(6, 2))
+    
     date = db.Column(db.TIMESTAMP(), default=datetime.utcnow())