fix(PBI-59): jobs sorted newest-first, unified on created_at (#157)

- actions/jobs-page.ts: beide kolommen orderBy created_at desc
- stores/jobs-store.ts: nieuwe actieve jobs unshift (top) i.p.v. push (bottom)

Hiermee komen nieuw aangemaakte QUEUED/CLAIMED jobs bovenaan in de
linker kolom, in plaats van onderaan waar ze buiten het scrollbare deel
kunnen vallen.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

actions/jobs-page.ts

@@ -151,12 +151,12 @@ export async function fetchJobsPageData(): Promise<{ activeJobs: JobWithRelation
     prisma.claudeJob.findMany({
       where: { user_id: session.userId, status: { notIn: ['DONE'] } },
       include: JOB_INCLUDE,
-      orderBy: { created_at: 'asc' },
+      orderBy: { created_at: 'desc' },
     }),
     prisma.claudeJob.findMany({
       where: { user_id: session.userId, status: 'DONE' },
       include: JOB_INCLUDE,
-      orderBy: { finished_at: 'desc' },
+      orderBy: { created_at: 'desc' },
       take: 100,
     }),
     prisma.modelPrice.findMany(),