Added job repository, implemented create and listall functions

app/repositories/job_repository.py

@@ -0,0 +1,25 @@
+from typing import List, Optional, Any, Dict
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from app.db.models.job import Job
+
+
+class JobRepository:
+    def __init__(self, db: AsyncSession):
+        self.db = db
+
+    async def create(self, filename: str) -> Job:
+        job = Job(filename=filename, status="pending")
+        self.db.add(job)
+        await self.db.flush()
+        return job
+
+
+    async def list_all(self, status: Optional[str] = None) -> List[Job]:
+        query = select(Job)
+        if status:
+            query = query.where(Job.status == status)
+        query = query.order_by(Job.created_at.desc())
+        result = await self.db.execute(query)
+        return list(result.scalars().all())
+