Initial commit: Børnetime app scaffold

FastAPI + Celery + Svelte app for English→Danish video translation
with voice cloning. Includes diarization, STT, translation, TTS,
and audio mixing pipeline.

backend/app/api/jobs.py

@@ -0,0 +1,54 @@
+from fastapi import APIRouter, Depends, HTTPException, Query
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select
+
+from ..models.database import get_session
+from ..models.tables import Job, Video, JobStatus
+from ..models.schemas import JobOut, JobListOut, ProcessResponse
+from ..tasks.process import process_video
+from ..tasks.generate import generate_audio
+
+router = APIRouter()
+
+
+@router.get("", response_model=JobListOut)
+async def list_jobs(session: AsyncSession = Depends(get_session)):
+    result = await session.execute(select(Job).order_by(Job.created_at.desc()))
+    jobs = result.scalars().all()
+    return JobListOut(jobs=[JobOut.model_validate(j) for j in jobs])
+
+
+@router.get("/{job_id}", response_model=JobOut)
+async def get_job(job_id: int, session: AsyncSession = Depends(get_session)):
+    result = await session.execute(select(Job).where(Job.id == job_id))
+    job = result.scalar_one_or_none()
+    if not job:
+        raise HTTPException(404, "Job not found")
+    return JobOut.model_validate(job)
+
+
+@router.post("/{job_id}/cancel", response_model=ProcessResponse)
+async def cancel_job(job_id: int, session: AsyncSession = Depends(get_session)):
+    result = await session.execute(select(Job).where(Job.id == job_id))
+    job = result.scalar_one_or_none()
+    if not job:
+        raise HTTPException(404, "Job not found")
+
+    if job.status not in (JobStatus.pending.value, JobStatus.running.value):
+        raise HTTPException(400, f"Cannot cancel job in status '{job.status}'")
+
+    job.status = JobStatus.failed.value
+    job.error_message = "Cancelled by user"
+    await session.commit()
+
+    video_result = await session.execute(select(Video).where(Video.id == job.video_id))
+    video = video_result.scalar_one_or_none()
+    if video:
+        if job.job_type == "process":
+            video.status = "uploaded"
+        elif job.job_type == "generate":
+            video.status = "review"
+        video.error_message = None
+        await session.commit()
+
+    return ProcessResponse(job_id=job.id, message="Job cancelled")