fix: speed up academic degree filter

migrations/001_init.sql

@@ -33,6 +33,7 @@ CREATE TABLE IF NOT EXISTS employees (
   dismissed_at TIMESTAMPTZ,
   parser_version VARCHAR(32),
   current_data JSONB,
+  has_academic_degree BOOLEAN NOT NULL DEFAULT FALSE,
   current_checksum VARCHAR(64),
   created_at TIMESTAMPTZ NOT NULL DEFAULT now(),
   updated_at TIMESTAMPTZ NOT NULL DEFAULT now()
@@ -40,6 +41,7 @@ CREATE TABLE IF NOT EXISTS employees (
 
 CREATE INDEX IF NOT EXISTS ix_employees_full_name ON employees (full_name);
 CREATE INDEX IF NOT EXISTS ix_employees_status ON employees (status);
+CREATE INDEX IF NOT EXISTS ix_employees_has_academic_degree ON employees (has_academic_degree);
 
 CREATE TABLE IF NOT EXISTS employee_snapshots (
   id SERIAL PRIMARY KEY,