refactor: align backend with company-site-member schema and system-level RBAC groups

app/repositories/companies_repo.py

@@ -0,0 +1,35 @@
+from sqlalchemy import func, or_, select
+from sqlalchemy.orm import Session
+
+from app.models.company import Company
+
+
+class CompaniesRepository:
+    def __init__(self, db: Session) -> None:
+        self.db = db
+
+    def get_by_key(self, company_key: str) -> Company | None:
+        stmt = select(Company).where(Company.company_key == company_key)
+        return self.db.scalar(stmt)
+
+    def get_by_id(self, company_id: str) -> Company | None:
+        stmt = select(Company).where(Company.id == company_id)
+        return self.db.scalar(stmt)
+
+    def list(self, keyword: str | None = None, limit: int = 100, offset: int = 0) -> tuple[list[Company], int]:
+        stmt = select(Company)
+        count_stmt = select(func.count()).select_from(Company)
+        if keyword:
+            pattern = f"%{keyword}%"
+            cond = or_(Company.company_key.ilike(pattern), Company.name.ilike(pattern))
+            stmt = stmt.where(cond)
+            count_stmt = count_stmt.where(cond)
+        stmt = stmt.order_by(Company.created_at.desc()).limit(limit).offset(offset)
+        return list(self.db.scalars(stmt).all()), int(self.db.scalar(count_stmt) or 0)
+
+    def create(self, company_key: str, name: str, status: str = "active") -> Company:
+        item = Company(company_key=company_key, name=name, status=status)
+        self.db.add(item)
+        self.db.commit()
+        self.db.refresh(item)
+        return item