refactor: replace fuel_scraper with newenglandoil + cheapestoil scrapers

- Add newenglandoil/ package as the primary scraper (replaces fuel_scraper)
- Add cheapestoil/ package as a secondary market price scraper
- Add app.py entry point for direct execution
- Update run.py: new scrape_cheapest(), migrate command, --state filter,
  --refresh-metadata flag for overwriting existing phone/URL data
- Update models.py with latest schema fields
- Update requirements.txt dependencies
- Update Dockerfile and docker-compose.yml for new structure
- Remove deprecated fuel_scraper module, test.py, and log file

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

models.py

@@ -25,6 +25,8 @@ class OilPrice(Base):
 
     company_id = Column(Integer, ForeignKey("company.id"), nullable=True)
     county_id = Column(Integer, nullable=True)
+    phone = Column(String(20), nullable=True)
+    url = Column(String(500), nullable=True)
 
     def __repr__(self):
         return (f"<OilPrice(id={self.id}, state='{self.state}', zone='{self.zone}', "
@@ -57,4 +59,16 @@ class Company(Base):
     user_id = Column(Integer, ForeignKey("users.id"), nullable=True, index=True)
 
     def __repr__(self):
-        return f"<Company(id={self.id}, name='{self.name}', active={self.active})>"
+        return f"<Company(id={self.id}, name='{self.name}', active={self.active})>"
+
+# --- StatsPrice Model ---
+class StatsPrice(Base):
+    __tablename__ = "stats_prices"
+
+    id = Column(Integer, primary_key=True, index=True, autoincrement=True)
+    state = Column(String(2), nullable=False)
+    price = Column(Float, nullable=False)
+    created_at = Column(DateTime, default=datetime.utcnow)
+
+    def __repr__(self):
+        return f"<StatsPrice(state='{self.state}', price={self.price})>"