fix: speed up academic degree filter

app/db.py

@@ -51,10 +51,20 @@ def _ensure_runtime_schema() -> None:
             missing_columns.append("profile_unavailable_streak INTEGER NOT NULL DEFAULT 0")
         if "last_profile_check_at" not in employee_columns:
             missing_columns.append("last_profile_check_at TIMESTAMPTZ")
+        if "has_academic_degree" not in employee_columns:
+            missing_columns.append("has_academic_degree BOOLEAN NOT NULL DEFAULT FALSE")
         if missing_columns:
             with engine.begin() as connection:
                 for column in missing_columns:
                     connection.execute(text(f"ALTER TABLE employees ADD COLUMN {column}"))
+                if engine.dialect.name == "postgresql":
+                    connection.execute(
+                        text(
+                            "UPDATE employees SET has_academic_degree = "
+                            "COALESCE(current_data::text ~* '(кандидат|доктор).{0,80}наук|ph\\.?[[:space:]]*d\\.?', FALSE)"
+                        )
+                    )
+                connection.execute(text("CREATE INDEX IF NOT EXISTS ix_employees_has_academic_degree ON employees (has_academic_degree)"))
     if "crawl_runs" not in table_names:
         return
     crawl_run_columns = {column["name"] for column in inspector.get_columns("crawl_runs")}