diff --git a/.gitignore b/.gitignore
index e2d6002..f31d6a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ node_modules/
 npm-debug.log*
 coverage/
 dist/
+test/fixtures/golden/
diff --git a/src/adapters/kubernetes-workload-fragment.ts b/src/adapters/kubernetes-workload-fragment.ts
index 1f46f01..952d9fa 100644
--- a/src/adapters/kubernetes-workload-fragment.ts
+++ b/src/adapters/kubernetes-workload-fragment.ts
@@ -118,6 +118,13 @@ function buildWorkloadManifest(workload: WorkloadV2, ns: string, images: Record<
   };
 }
 
+/** TTL after job completion (Option B decision). Allows Flux to re-apply a
+ *  new Job after the previous one is automatically cleaned up, avoiding
+ *  AlreadyExists conflicts on reconciliation. Value must exceed the Flux
+ *  reconciliation interval + health-check scrape window; 3600 s (1 h) is
+ *  the owner-decided value (DECISIONS.md 2026-07-12). */
+const JOB_TTL_SECONDS_AFTER_FINISHED = 3600;
+
 function buildJobManifest(workload: WorkloadV2, ns: string, images: Record<string, string>): K8sManifest {
   const podSpec: Record<string, unknown> = {
     serviceAccountName: workload.name,
@@ -135,6 +142,7 @@ function buildJobManifest(workload: WorkloadV2, ns: string, images: Record<strin
     kind: "Job",
     metadata: { name: workload.name, namespace: ns, labels: jobLabels(workload) },
     spec: {
+      ttlSecondsAfterFinished: JOB_TTL_SECONDS_AFTER_FINISHED,
       template: { metadata: { labels: jobLabels(workload) }, spec: podSpec },
     },
   };
diff --git a/test/fragment-engine.test.js b/test/fragment-engine.test.js
index 474faf1..8c89499 100644
--- a/test/fragment-engine.test.js
+++ b/test/fragment-engine.test.js
@@ -522,6 +522,9 @@ test("job workload: kubernetes fragment renders batch/v1 Job with migration labe
   assert.equal(job.metadata.labels["app.kubernetes.io/component"], "migration",
     "Job must carry app.kubernetes.io/component=migration for prune-guardrails");
   assert.equal(job.spec.template.spec.restartPolicy, "Never");
+  // TTL: Option B (owner decision 2026-07-12) — completed jobs must be cleaned up automatically
+  assert.equal(job.spec.ttlSecondsAfterFinished, 3600,
+    "Job must carry ttlSecondsAfterFinished:3600 so Flux can re-apply after cleanup");
   // No PVCs in output
   assert.ok(!rendered.manifests.some((m) => m.kind === "PersistentVolumeClaim"),
     "Job workload must not emit PVCs");