fix: speed up academic degree filter

app/models.py

@@ -1,6 +1,6 @@
 from datetime import datetime, timezone
 
-from sqlalchemy import DateTime, ForeignKey, Index, Integer, LargeBinary, String, Text, UniqueConstraint
+from sqlalchemy import Boolean, DateTime, ForeignKey, Index, Integer, LargeBinary, String, Text, UniqueConstraint
 from sqlalchemy.dialects.postgresql import JSONB
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 from sqlalchemy.types import JSON
@@ -21,6 +21,7 @@ class Employee(Base):
         UniqueConstraint("profile_key", name="uq_employees_profile_key"),
         Index("ix_employees_full_name", "full_name"),
         Index("ix_employees_status", "status"),
+        Index("ix_employees_has_academic_degree", "has_academic_degree"),
     )
 
     id: Mapped[int] = mapped_column(Integer, primary_key=True)
@@ -37,6 +38,7 @@ class Employee(Base):
     last_profile_check_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True))
     parser_version: Mapped[str | None] = mapped_column(String(32))
     current_data: Mapped[dict | None] = mapped_column(json_type)
+    has_academic_degree: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
     current_checksum: Mapped[str | None] = mapped_column(String(64))
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow, nullable=False)
     updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow, onupdate=utcnow, nullable=False)