Add admin-frontend and user-frontend standalone projects, certification/invoice/discovery features, fix auth header and theme consistency

backend/app/models/certification.py

@@ -0,0 +1,41 @@
+from sqlalchemy import Column, String, Boolean, Integer, DateTime, Text, ForeignKey, Enum as SAEnum
+from sqlalchemy.dialects.postgresql import UUID
+from sqlalchemy.orm import relationship
+from datetime import datetime
+from app.database import Base
+import uuid
+import enum
+
+
+class CertType(str, enum.Enum):
+    individual = "individual"
+    enterprise = "enterprise"
+
+
+class CertStatus(str, enum.Enum):
+    pending = "pending"
+    approved = "approved"
+    rejected = "rejected"
+
+
+class Certification(Base):
+    __tablename__ = "certifications"
+
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    user_id = Column(UUID(as_uuid=True), ForeignKey("users.id"), nullable=False, index=True)
+    cert_type = Column(SAEnum(CertType), nullable=False)
+
+    personal_name = Column(String(100))
+    personal_id = Column(String(30))
+
+    company_name = Column(String(255))
+    tax_id = Column(String(30))
+    business_license_url = Column(String(500))
+
+    status = Column(SAEnum(CertStatus), default=CertStatus.pending)
+    reject_reason = Column(Text)
+
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    user = relationship("User")