chore(fmt): repo-wide gofmt -w sweep — close drift surfaced by ci-pipeline-cleanup Phase 4

Mechanical reformat. The new 'gofmt drift' CI step (added in
ci-pipeline-cleanup Phase 4, commit 71b2245) surfaced 111 files
with accumulated gofmt drift across cmd/, internal/, and deploy/test/.

Each file's diff is gofmt-standard: whitespace adjustments, intra-
group import sorting (alphabetical by import path within blank-line-
separated groups), and struct-tag column alignment. No semantic
changes — verified via 'git diff --ignore-all-space' which shows only
the line-position deltas from import reordering.

The gate stays in place after this commit. Going forward it catches
gofmt drift at PR time.

internal/service/job_offline_agent_reaper_test.go

@@ -36,9 +36,9 @@ func mkRunningJob(id, agentID string) *domain.Job {
 	a := agentID
 	now := time.Now()
 	return &domain.Job{
-		ID:       id,
-		AgentID:  &a,
-		Status:   domain.JobStatusRunning,
+		ID:        id,
+		AgentID:   &a,
+		Status:    domain.JobStatusRunning,
 		CreatedAt: now.Add(-2 * time.Hour),
 	}
 }