refactor: update database setup and remove skills migration API

- Changed migration commands in DATABASE_SETUP.md to use `pnpm run sync-skills` and `pnpm run sync-teams`.
- Removed the skills migration API endpoint in route.ts, streamlining the migration process.
- Updated MIGRATION_UUID.md to reflect changes in migration steps and removed the old skills migration script.
- Added new sync scripts for skills and teams in package.json.
- Cleaned up init.sql by removing old teams data insertion and adjusted comments for clarity.

scripts/init.sql

@@ -84,17 +84,6 @@ CREATE TABLE skill_evaluations (
     UNIQUE(user_evaluation_id, skill_id)
 );
 
--- Insert initial teams data
-INSERT INTO teams (id, name, direction) VALUES
-    ('frontend', 'Frontend', 'Engineering'),
-    ('backend', 'Backend', 'Engineering'),
-    ('devops', 'DevOps', 'Engineering'),
-    ('mobile', 'Mobile', 'Engineering'),
-    ('data', 'Data Science', 'Engineering'),
-    ('product', 'Product', 'Product'),
-    ('design', 'Design', 'Product'),
-    ('marketing', 'Marketing', 'Business');
-
 -- Indexes for performance
 CREATE INDEX idx_teams_direction ON teams(direction);
 CREATE INDEX idx_skills_category_id ON skills(category_id);