Refactor and enhance CalMiner application

- Updated README.md to reflect new features and usage instructions.
- Removed deprecated Dashboard.html component and integrated dashboard functionality directly into the main application.
- Revised architecture documentation for clarity and added module map and request flow diagrams.
- Enhanced maintenance model to include equipment association and cost tracking.
- Updated requirements.txt to include new dependencies (httpx, pandas, numpy).
- Improved consumption, maintenance, production, and reporting routes with better validation and response handling.
- Added unit tests for maintenance and production routes, ensuring proper CRUD operations and validation.
- Enhanced reporting service to calculate and return detailed summary statistics.
- Redesigned Dashboard.html for improved user experience and integrated Chart.js for visualizing simulation results.

models/maintenance.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String, DateTime, ForeignKey, func
+from sqlalchemy import Column, Date, Float, ForeignKey, Integer, String
 from sqlalchemy.orm import relationship
 from config.database import Base
 
@@ -7,11 +7,17 @@ class Maintenance(Base):
     __tablename__ = "maintenance"
 
     id = Column(Integer, primary_key=True, index=True)
+    equipment_id = Column(Integer, ForeignKey("equipment.id"), nullable=False)
     scenario_id = Column(Integer, ForeignKey("scenario.id"), nullable=False)
-    performed_at = Column(DateTime(timezone=True), server_default=func.now())
-    details = Column(String, nullable=True)
+    maintenance_date = Column(Date, nullable=False)
+    description = Column(String, nullable=True)
+    cost = Column(Float, nullable=False)
 
+    equipment = relationship("Equipment")
     scenario = relationship("Scenario", back_populates="maintenance_items")
 
-    def __repr__(self):
-        return f"<Maintenance id={self.id} scenario_id={self.scenario_id} performed_at={self.performed_at}>"
+    def __repr__(self) -> str:
+        return (
+            f"<Maintenance id={self.id} equipment_id={self.equipment_id} "
+            f"scenario_id={self.scenario_id} date={self.maintenance_date} cost={self.cost}>"
+        )