feat(core): add address fields to Contact model

app/models/contact.py

@@ -42,16 +42,18 @@ class Contact(Base, TenantMixin):
     department: Mapped[str | None] = mapped_column(String(100), nullable=True)
     linkedin_url: Mapped[str | None] = mapped_column(String(500), nullable=True)
     notes: Mapped[str | None] = mapped_column(Text, nullable=True)
+    # Address fields (private address, may differ from company)
+    address_street: Mapped[str | None] = mapped_column(String(255), nullable=True)
+    address_city: Mapped[str | None] = mapped_column(String(100), nullable=True)
+    address_zip: Mapped[str | None] = mapped_column(String(20), nullable=True)
+    address_country: Mapped[str | None] = mapped_column(String(2), nullable=True)
+    address_state: Mapped[str | None] = mapped_column(String(100), nullable=True)
     deleted_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
     created_by: Mapped[uuid.UUID | None] = mapped_column(
-        PGUUID(as_uuid=True),
+        PGUUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True
-        ForeignKey("users.id", ondelete="SET NULL"),
-        nullable=True,
     )
     updated_by: Mapped[uuid.UUID | None] = mapped_column(
-        PGUUID(as_uuid=True),
+        PGUUID(as_uuid=True), ForeignKey("users.id", ondelete="SET NULL"), nullable=True
-        ForeignKey("users.id", ondelete="SET NULL"),
-        nullable=True,
     )
 
 
@@ -69,14 +71,10 @@ class CompanyContact(Base, TenantMixin):
         PGUUID(as_uuid=True), primary_key=True, default=uuid.uuid4
     )
     company_id: Mapped[uuid.UUID] = mapped_column(
-        PGUUID(as_uuid=True),
+        PGUUID(as_uuid=True), ForeignKey("companies.id", ondelete="CASCADE"), nullable=False
-        ForeignKey("companies.id", ondelete="CASCADE"),
-        nullable=False,
     )
     contact_id: Mapped[uuid.UUID] = mapped_column(
-        PGUUID(as_uuid=True),
+        PGUUID(as_uuid=True), ForeignKey("contacts.id", ondelete="CASCADE"), nullable=False
-        ForeignKey("contacts.id", ondelete="CASCADE"),
-        nullable=False,
     )
     role_at_company: Mapped[str | None] = mapped_column(String(100), nullable=True)
     is_primary: Mapped[bool] = mapped_column(Boolean, nullable=False, default=False)