diff --git a/tests/integration/routes/parity/__snapshots__/workouts-batch.01-first-batch.json.snap b/tests/integration/routes/parity/__snapshots__/workouts-batch.01-first-batch.json.snap
new file mode 100644
index 000000000..755012285
--- /dev/null
+++ b/tests/integration/routes/parity/__snapshots__/workouts-batch.01-first-batch.json.snap
@@ -0,0 +1,284 @@
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+        }
+      ]
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+      "effect": "emitDataArrival",
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+    },
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+      },
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+          }
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+    }
+  ]
+}
diff --git a/tests/integration/routes/parity/__snapshots__/workouts-batch.02-same-batch-enrich.json.snap b/tests/integration/routes/parity/__snapshots__/workouts-batch.02-same-batch-enrich.json.snap
new file mode 100644
index 000000000..613422c54
--- /dev/null
+++ b/tests/integration/routes/parity/__snapshots__/workouts-batch.02-same-batch-enrich.json.snap
@@ -0,0 +1,270 @@
+{
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+        }
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+          "status": "enriched"
+        }
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+        }
+      ]
+    },
+    {
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+      },
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+          }
+        ],
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+    }
+  ]
+}
diff --git a/tests/integration/routes/parity/__snapshots__/workouts-batch.03-manual-correction.json.snap b/tests/integration/routes/parity/__snapshots__/workouts-batch.03-manual-correction.json.snap
new file mode 100644
index 000000000..132588043
--- /dev/null
+++ b/tests/integration/routes/parity/__snapshots__/workouts-batch.03-manual-correction.json.snap
@@ -0,0 +1,232 @@
+{
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+      ]
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+  },
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+      },
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+    }
+  ],
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+      "effect": "enqueuePrDetection",
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+        "<id:1>",
+        {
+          "silent": false
+        }
+      ]
+    },
+    {
+      "effect": "emitDataArrival",
+      "args": [
+        {
+          "userId": "<id:1>",
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+          "newestSampleAt": "2026-10-13T16:00:00.000Z",
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+          "refId": "<id:2>",
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+        }
+      ]
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+  ],
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+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-1",
+      "externalSourceVersion": null,
+      "metadata": {
+        "HKIndoorWorkout": false
+      },
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    }
+  ]
+}
diff --git a/tests/integration/routes/parity/__snapshots__/workouts-batch.04-route-kept.json.snap b/tests/integration/routes/parity/__snapshots__/workouts-batch.04-route-kept.json.snap
new file mode 100644
index 000000000..39a3769e3
--- /dev/null
+++ b/tests/integration/routes/parity/__snapshots__/workouts-batch.04-route-kept.json.snap
@@ -0,0 +1,266 @@
+{
+  "status": 200,
+  "body": {
+    "data": {
+      "processed": 1,
+      "inserted": 1,
+      "duplicates": 0,
+      "skipped": [],
+      "entries": [
+        {
+          "index": 0,
+          "status": "inserted"
+        }
+      ]
+    },
+    "error": null
+  },
+  "events": [
+    {
+      "status": 200,
+      "action": {
+        "name": "workout.batch.ingest"
+      },
+      "meta": {
+        "write_bucket": "own",
+        "pr_detection_enqueued": true,
+        "pr_detection_silent": false,
+        "processed": 1,
+        "inserted": 1,
+        "duplicates": 0,
+        "enriched": 0,
+        "updated": 0,
+        "skipped": 0,
+        "routes_dropped": 0
+      },
+      "warnings": null,
+      "error": null
+    }
+  ],
+  "effects": [
+    {
+      "effect": "enqueuePrDetection",
+      "args": [
+        "<id:1>",
+        {
+          "silent": false
+        }
+      ]
+    },
+    {
+      "effect": "emitDataArrival",
+      "args": [
+        {
+          "userId": "<id:1>",
+          "kind": "workout",
+          "newestSampleAt": "2026-10-15T06:30:00.000Z",
+          "insertedCount": 1,
+          "refId": "<id:2>",
+          "source": "batch"
+        }
+      ]
+    }
+  ],
+  "stored": [
+    {
+      "id": "<id:3>",
+      "sportType": "running",
+      "startedAt": "2026-10-08T07:00:00.000Z",
+      "endedAt": "2026-10-08T07:50:00.000Z",
+      "durationSec": 3000,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-2",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:4>",
+      "sportType": "swimming",
+      "startedAt": "2026-10-11T07:00:00.000Z",
+      "endedAt": "2026-10-11T07:40:00.000Z",
+      "durationSec": 2400,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 1500,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-swim-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:5>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:6>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:7>",
+      "sportType": "cycling",
+      "startedAt": "2026-10-13T16:00:00.000Z",
+      "endedAt": "2026-10-13T17:05:00.000Z",
+      "durationSec": 3900,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 2400,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": "manual:ride-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:8>",
+      "sportType": "running",
+      "startedAt": "2026-10-14T06:30:00.000Z",
+      "endedAt": "2026-10-14T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": 610,
+      "totalDistanceM": 8200,
+      "avgHeartRate": 148,
+      "maxHeartRate": 171,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-1",
+      "externalSourceVersion": null,
+      "metadata": {
+        "HKIndoorWorkout": false
+      },
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:2>",
+      "sportType": "running",
+      "startedAt": "2026-10-15T06:30:00.000Z",
+      "endedAt": "2026-10-15T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": 6,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-3",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": {
+        "geometry": null,
+        "sealed": true,
+        "sampleTimestamps": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 120
+          },
+          {
+            "t": "2026-10-14T06:31:00.000Z",
+            "hr": 131
+          },
+          {
+            "t": "2026-10-14T06:32:00.000Z",
+            "hr": 137
+          }
+        ]
+      }
+    }
+  ]
+}
diff --git a/tests/integration/routes/parity/__snapshots__/workouts-batch.05-too-large.json.snap b/tests/integration/routes/parity/__snapshots__/workouts-batch.05-too-large.json.snap
new file mode 100644
index 000000000..7239701b4
--- /dev/null
+++ b/tests/integration/routes/parity/__snapshots__/workouts-batch.05-too-large.json.snap
@@ -0,0 +1,225 @@
+{
+  "status": 400,
+  "body": {
+    "data": null,
+    "error": "Batch exceeds the 100-workout limit",
+    "meta": {
+      "errorCode": "workout.batch.too_large",
+      "requestId": "<requestId>"
+    }
+  },
+  "events": [
+    {
+      "status": 400,
+      "action": null,
+      "meta": {
+        "write_bucket": "own"
+      },
+      "warnings": null,
+      "error": null
+    }
+  ],
+  "effects": [],
+  "stored": [
+    {
+      "id": "<id:1>",
+      "sportType": "running",
+      "startedAt": "2026-10-08T07:00:00.000Z",
+      "endedAt": "2026-10-08T07:50:00.000Z",
+      "durationSec": 3000,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-2",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:2>",
+      "sportType": "swimming",
+      "startedAt": "2026-10-11T07:00:00.000Z",
+      "endedAt": "2026-10-11T07:40:00.000Z",
+      "durationSec": 2400,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 1500,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-swim-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:3>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:4>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:5>",
+      "sportType": "cycling",
+      "startedAt": "2026-10-13T16:00:00.000Z",
+      "endedAt": "2026-10-13T17:05:00.000Z",
+      "durationSec": 3900,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 2400,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": "manual:ride-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:6>",
+      "sportType": "running",
+      "startedAt": "2026-10-14T06:30:00.000Z",
+      "endedAt": "2026-10-14T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": 610,
+      "totalDistanceM": 8200,
+      "avgHeartRate": 148,
+      "maxHeartRate": 171,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-1",
+      "externalSourceVersion": null,
+      "metadata": {
+        "HKIndoorWorkout": false
+      },
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:7>",
+      "sportType": "running",
+      "startedAt": "2026-10-15T06:30:00.000Z",
+      "endedAt": "2026-10-15T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": 6,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-3",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": {
+        "geometry": null,
+        "sealed": true,
+        "sampleTimestamps": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 120
+          },
+          {
+            "t": "2026-10-14T06:31:00.000Z",
+            "hr": 131
+          },
+          {
+            "t": "2026-10-14T06:32:00.000Z",
+            "hr": 137
+          }
+        ]
+      }
+    }
+  ]
+}
diff --git a/tests/integration/routes/parity/__snapshots__/workouts-batch.06-invalid.json.snap b/tests/integration/routes/parity/__snapshots__/workouts-batch.06-invalid.json.snap
new file mode 100644
index 000000000..2b79858ba
--- /dev/null
+++ b/tests/integration/routes/parity/__snapshots__/workouts-batch.06-invalid.json.snap
@@ -0,0 +1,225 @@
+{
+  "status": 400,
+  "body": {
+    "data": null,
+    "error": "Invalid ISO datetime",
+    "meta": {
+      "errorCode": "workout.batch.invalid",
+      "requestId": "<requestId>"
+    }
+  },
+  "events": [
+    {
+      "status": 400,
+      "action": null,
+      "meta": {
+        "write_bucket": "own"
+      },
+      "warnings": null,
+      "error": null
+    }
+  ],
+  "effects": [],
+  "stored": [
+    {
+      "id": "<id:1>",
+      "sportType": "running",
+      "startedAt": "2026-10-08T07:00:00.000Z",
+      "endedAt": "2026-10-08T07:50:00.000Z",
+      "durationSec": 3000,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-2",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:2>",
+      "sportType": "swimming",
+      "startedAt": "2026-10-11T07:00:00.000Z",
+      "endedAt": "2026-10-11T07:40:00.000Z",
+      "durationSec": 2400,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 1500,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-swim-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:3>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:4>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:5>",
+      "sportType": "cycling",
+      "startedAt": "2026-10-13T16:00:00.000Z",
+      "endedAt": "2026-10-13T17:05:00.000Z",
+      "durationSec": 3900,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 2400,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": "manual:ride-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:6>",
+      "sportType": "running",
+      "startedAt": "2026-10-14T06:30:00.000Z",
+      "endedAt": "2026-10-14T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": 610,
+      "totalDistanceM": 8200,
+      "avgHeartRate": 148,
+      "maxHeartRate": 171,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-1",
+      "externalSourceVersion": null,
+      "metadata": {
+        "HKIndoorWorkout": false
+      },
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:7>",
+      "sportType": "running",
+      "startedAt": "2026-10-15T06:30:00.000Z",
+      "endedAt": "2026-10-15T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": 6,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-3",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": {
+        "geometry": null,
+        "sealed": true,
+        "sampleTimestamps": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 120
+          },
+          {
+            "t": "2026-10-14T06:31:00.000Z",
+            "hr": 131
+          },
+          {
+            "t": "2026-10-14T06:32:00.000Z",
+            "hr": 137
+          }
+        ]
+      }
+    }
+  ]
+}
diff --git a/tests/integration/routes/parity/__snapshots__/workouts-batch.07a-bridge-with-source.json.snap b/tests/integration/routes/parity/__snapshots__/workouts-batch.07a-bridge-with-source.json.snap
new file mode 100644
index 000000000..c44129f53
--- /dev/null
+++ b/tests/integration/routes/parity/__snapshots__/workouts-batch.07a-bridge-with-source.json.snap
@@ -0,0 +1,228 @@
+{
+  "status": 422,
+  "body": {
+    "data": null,
+    "error": "This credential resolves the source itself; omit the field",
+    "meta": {
+      "errorCode": "workout.batch.source_not_permitted",
+      "requestId": "<requestId>"
+    }
+  },
+  "events": [
+    {
+      "status": 422,
+      "action": {
+        "name": "workout.batch.ingest"
+      },
+      "meta": {
+        "write_bucket": "own",
+        "outcome": "source_not_permitted"
+      },
+      "warnings": null,
+      "error": null
+    }
+  ],
+  "effects": [],
+  "stored": [
+    {
+      "id": "<id:1>",
+      "sportType": "running",
+      "startedAt": "2026-10-08T07:00:00.000Z",
+      "endedAt": "2026-10-08T07:50:00.000Z",
+      "durationSec": 3000,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-2",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:2>",
+      "sportType": "swimming",
+      "startedAt": "2026-10-11T07:00:00.000Z",
+      "endedAt": "2026-10-11T07:40:00.000Z",
+      "durationSec": 2400,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 1500,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-swim-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:3>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:4>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:5>",
+      "sportType": "cycling",
+      "startedAt": "2026-10-13T16:00:00.000Z",
+      "endedAt": "2026-10-13T17:05:00.000Z",
+      "durationSec": 3900,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 2400,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": "manual:ride-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:6>",
+      "sportType": "running",
+      "startedAt": "2026-10-14T06:30:00.000Z",
+      "endedAt": "2026-10-14T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": 610,
+      "totalDistanceM": 8200,
+      "avgHeartRate": 148,
+      "maxHeartRate": 171,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-1",
+      "externalSourceVersion": null,
+      "metadata": {
+        "HKIndoorWorkout": false
+      },
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:7>",
+      "sportType": "running",
+      "startedAt": "2026-10-15T06:30:00.000Z",
+      "endedAt": "2026-10-15T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": 6,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-3",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": {
+        "geometry": null,
+        "sealed": true,
+        "sampleTimestamps": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 120
+          },
+          {
+            "t": "2026-10-14T06:31:00.000Z",
+            "hr": 131
+          },
+          {
+            "t": "2026-10-14T06:32:00.000Z",
+            "hr": 137
+          }
+        ]
+      }
+    }
+  ]
+}
diff --git a/tests/integration/routes/parity/__snapshots__/workouts-batch.07b-bridge.json.snap b/tests/integration/routes/parity/__snapshots__/workouts-batch.07b-bridge.json.snap
new file mode 100644
index 000000000..6841862c7
--- /dev/null
+++ b/tests/integration/routes/parity/__snapshots__/workouts-batch.07b-bridge.json.snap
@@ -0,0 +1,287 @@
+{
+  "status": 200,
+  "body": {
+    "data": {
+      "processed": 1,
+      "inserted": 1,
+      "duplicates": 0,
+      "skipped": [],
+      "entries": [
+        {
+          "index": 0,
+          "status": "inserted"
+        }
+      ]
+    },
+    "error": null
+  },
+  "events": [
+    {
+      "status": 200,
+      "action": {
+        "name": "workout.batch.ingest"
+      },
+      "meta": {
+        "write_bucket": "own",
+        "pr_detection_enqueued": true,
+        "pr_detection_silent": false,
+        "processed": 1,
+        "inserted": 1,
+        "duplicates": 0,
+        "enriched": 0,
+        "updated": 0,
+        "skipped": 0,
+        "routes_dropped": 0
+      },
+      "warnings": null,
+      "error": null
+    }
+  ],
+  "effects": [
+    {
+      "effect": "enqueuePrDetection",
+      "args": [
+        "<id:1>",
+        {
+          "silent": false
+        }
+      ]
+    },
+    {
+      "effect": "emitDataArrival",
+      "args": [
+        {
+          "userId": "<id:1>",
+          "kind": "workout",
+          "newestSampleAt": "2026-10-15T09:00:00.000Z",
+          "insertedCount": 1,
+          "refId": "<id:2>",
+          "source": "batch"
+        }
+      ]
+    }
+  ],
+  "stored": [
+    {
+      "id": "<id:3>",
+      "sportType": "running",
+      "startedAt": "2026-10-08T07:00:00.000Z",
+      "endedAt": "2026-10-08T07:50:00.000Z",
+      "durationSec": 3000,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-2",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:4>",
+      "sportType": "swimming",
+      "startedAt": "2026-10-11T07:00:00.000Z",
+      "endedAt": "2026-10-11T07:40:00.000Z",
+      "durationSec": 2400,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 1500,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-swim-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:5>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:6>",
+      "sportType": "walking",
+      "startedAt": "2026-10-12T18:00:00.000Z",
+      "endedAt": "2026-10-12T18:30:00.000Z",
+      "durationSec": 1800,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": null,
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:7>",
+      "sportType": "cycling",
+      "startedAt": "2026-10-13T16:00:00.000Z",
+      "endedAt": "2026-10-13T17:05:00.000Z",
+      "durationSec": 3900,
+      "totalEnergyKcal": null,
+      "totalDistanceM": 2400,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "MANUAL",
+      "externalId": "manual:ride-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    },
+    {
+      "id": "<id:8>",
+      "sportType": "running",
+      "startedAt": "2026-10-14T06:30:00.000Z",
+      "endedAt": "2026-10-14T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": 610,
+      "totalDistanceM": 8200,
+      "avgHeartRate": 148,
+      "maxHeartRate": 171,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-1",
+      "externalSourceVersion": null,
+      "metadata": {
+        "HKIndoorWorkout": false
+      },
+      "samples": {
+        "samples": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 121
+          },
+          {
+            "t": "2026-10-14T06:30:05.000Z",
+            "hr": 128,
+            "cadence": 168
+          },
+          {
+            "t": "2026-10-14T06:30:10.000Z",
+            "hr": 133
+          }
+        ],
+        "sampleCount": 3
+      },
+      "route": null
+    },
+    {
+      "id": "<id:9>",
+      "sportType": "running",
+      "startedAt": "2026-10-15T06:30:00.000Z",
+      "endedAt": "2026-10-15T07:15:00.000Z",
+      "durationSec": 2700,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": 6,
+      "pauseDurationSec": null,
+      "source": "APPLE_HEALTH",
+      "externalId": "hk-run-3",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": {
+        "geometry": null,
+        "sealed": true,
+        "sampleTimestamps": [
+          {
+            "t": "2026-10-14T06:30:00.000Z",
+            "hr": 120
+          },
+          {
+            "t": "2026-10-14T06:31:00.000Z",
+            "hr": 131
+          },
+          {
+            "t": "2026-10-14T06:32:00.000Z",
+            "hr": 137
+          }
+        ]
+      }
+    },
+    {
+      "id": "<id:2>",
+      "sportType": "running",
+      "startedAt": "2026-10-15T09:00:00.000Z",
+      "endedAt": "2026-10-15T09:20:00.000Z",
+      "durationSec": 1200,
+      "totalEnergyKcal": null,
+      "totalDistanceM": null,
+      "avgHeartRate": null,
+      "maxHeartRate": null,
+      "minHeartRate": null,
+      "stepCount": null,
+      "elevationM": null,
+      "pauseDurationSec": null,
+      "source": "EXTERNAL",
+      "externalId": "bridge-1",
+      "externalSourceVersion": null,
+      "metadata": null,
+      "samples": null,
+      "route": null
+    }
+  ]
+}
diff --git a/tests/integration/routes/parity/workouts-batch.parity.test.ts b/tests/integration/routes/parity/workouts-batch.parity.test.ts
new file mode 100644
index 000000000..66b2ff8b6
--- /dev/null
+++ b/tests/integration/routes/parity/workouts-batch.parity.test.ts
@@ -0,0 +1,317 @@
+/**
+ * Parity for `POST /api/workouts/batch` while its ingest moves into
+ * `src/lib/workouts/batch/`.
+ *
+ * One account walks through the cases the route tells apart, each request
+ * seeing what the earlier ones stored: a first batch (a HealthKit run with
+ * its heart-rate series and a track the account does not keep, a
+ * hand-entered ride, one with no external id, the same session from two
+ * sources, an unstable id and a series that fails validation), the same
+ * batch again with a series for a stored workout that had none, a corrected
+ * hand-entered workout, a track kept once the account opts in, the two
+ * whole-batch refusals, and a narrow bridge token with and without a
+ * `source`. After each request the snapshot holds the response, the wide
+ * event, the queue and arrival tails, and the stored workouts with their
+ * series and tracks (a sealed track as its presence, since its bytes carry
+ * a random nonce).
+ */
+import { afterAll, beforeAll, describe, expect, it, vi } from "vitest";
+
+import { POST } from "@/app/api/workouts/batch/route";
+import { WORKOUTS_WRITE_SCOPE } from "@/lib/workouts/scopes";
+
+import { callRoute, type RouteAuth } from "../../../kit/call-route";
+import { makeSession, makeToken, makeUser } from "../../../kit/factories";
+import {
+  effectRecorder,
+  eventFacts,
+  expectParity,
+  stable,
+  wideEventRecorder,
+} from "../../../kit/parity";
+import { getPrismaClient, truncateAllTables } from "../../setup";
+
+vi.mock("@/lib/logging/transports", async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import("@/lib/logging/transports")>();
+  const { wideEventRecorder: recorder } = await import("../../../kit/parity");
+  return {
+    ...actual,
+    emitIfSampled: (event: (typeof recorder.events)[number]) => {
+      recorder.events.push(event);
+    },
+  };
+});
+vi.mock("@/lib/arrivals/emit-shared", async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import("@/lib/arrivals/emit-shared")>();
+  const { effectRecorder } = await import("../../../kit/parity");
+  return {
+    ...actual,
+    emitDataArrival: async (...args: unknown[]) => {
+      effectRecorder.record("emitDataArrival", args);
+    },
+  };
+});
+vi.mock("@/lib/jobs/pr-detection", async (importOriginal) => {
+  const actual =
+    await importOriginal<typeof import("@/lib/jobs/pr-detection")>();
+  const { effectRecorder } = await import("../../../kit/parity");
+  return {
+    ...actual,
+    enqueuePrDetection: async (...args: unknown[]) => {
+      effectRecorder.record("enqueuePrDetection", args);
+    },
+  };
+});
+
+const prisma = getPrismaClient();
+const NOW = new Date("2026-10-15T12:00:00.000Z");
+
+type Workout = Record<string, unknown>;
+
+function workout(
+  externalId: string | undefined,
+  start: string,
+  minutes: number,
+  extra: Workout = {},
+): Workout {
+  const startedAt = new Date(start);
+  return {
+    sportType: "running",
+    startedAt: startedAt.toISOString(),
+    endedAt: new Date(startedAt.getTime() + minutes * 60_000).toISOString(),
+    source: "APPLE_HEALTH",
+    ...(externalId === undefined ? {} : { externalId }),
+    ...extra,
+  };
+}
+
+const SERIES = [
+  { t: "2026-10-14T06:30:00.000Z", hr: 121 },
+  { t: "2026-10-14T06:30:05.000Z", hr: 128, cadence: 168 },
+  { t: "2026-10-14T06:30:10.000Z", hr: 133 },
+];
+
+const TRACK = {
+  geometry: {
+    type: "LineString",
+    coordinates: [
+      [7.2162, 51.4818, 98],
+      [7.2171, 51.4822, 104],
+      [7.2183, 51.4829, 101],
+    ],
+  },
+  sampleTimestamps: [
+    { t: "2026-10-14T06:30:00.000Z", hr: 120 },
+    { t: "2026-10-14T06:31:00.000Z", hr: 131 },
+    { t: "2026-10-14T06:32:00.000Z", hr: 137 },
+  ],
+};
+
+const FIRST_BATCH: Workout[] = [
+  workout("hk-run-1", "2026-10-14T06:30:00.000Z", 45, {
+    totalDistanceM: 8_200,
+    totalEnergyKcal: 610,
+    avgHeartRate: 148,
+    maxHeartRate: 171,
+    samples: SERIES,
+    route: TRACK,
+    metadata: { HKIndoorWorkout: false },
+  }),
+  workout("manual:ride-1", "2026-10-13T16:00:00.000Z", 60, {
+    sportType: "cycling",
+    source: "MANUAL",
+    totalDistanceM: 24_000,
+  }),
+  workout(undefined, "2026-10-12T18:00:00.000Z", 30, {
+    sportType: "walking",
+    source: "MANUAL",
+  }),
+  // The same session from the phone and from a hand entry.
+  workout("hk-swim-1", "2026-10-11T07:00:00.000Z", 40, {
+    sportType: "swimming",
+    totalDistanceM: 1_500,
+  }),
+  workout("manual:swim-1", "2026-10-11T07:00:30.000Z", 40, {
+    sportType: "swimming",
+    source: "MANUAL",
+    totalDistanceM: 1_500,
+  }),
+  // Refused per entry.
+  workout("<HKWorkout: 0x600002f0c1e0>", "2026-10-10T07:00:00.000Z", 30),
+  workout("hk-run-bad-series", "2026-10-09T07:00:00.000Z", 30, {
+    samples: [{ t: "2026-10-09T07:00:00.000Z", hr: 999 }],
+  }),
+  workout("hk-run-2", "2026-10-08T07:00:00.000Z", 50),
+];
+
+let userId: string;
+let session: RouteAuth;
+
+async function state() {
+  const workouts = await prisma.workout.findMany({
+    where: { userId },
+    orderBy: [{ startedAt: "asc" }, { source: "asc" }],
+    select: {
+      id: true,
+      sportType: true,
+      startedAt: true,
+      endedAt: true,
+      durationSec: true,
+      totalEnergyKcal: true,
+      totalDistanceM: true,
+      avgHeartRate: true,
+      maxHeartRate: true,
+      minHeartRate: true,
+      stepCount: true,
+      elevationM: true,
+      pauseDurationSec: true,
+      source: true,
+      externalId: true,
+      externalSourceVersion: true,
+      metadata: true,
+      samples: { select: { samples: true, sampleCount: true } },
+      route: {
+        select: {
+          geometry: true,
+          geometryEncrypted: true,
+          sampleTimestamps: true,
+        },
+      },
+    },
+  });
+  return workouts.map(({ route, ...w }) => ({
+    ...w,
+    route: route
+      ? {
+          geometry: route.geometry,
+          sealed: route.geometryEncrypted !== null,
+          sampleTimestamps: route.sampleTimestamps,
+        }
+      : null,
+  }));
+}
+
+async function step(
+  name: string,
+  body: unknown,
+  auth: RouteAuth = session,
+): Promise<void> {
+  wideEventRecorder.take();
+  effectRecorder.take();
+  const res = await callRoute(POST, {
+    method: "POST",
+    route: "/api/workouts/batch",
+    body,
+    auth,
+  });
+  const events = wideEventRecorder.take();
+  expect(events.length).toBeGreaterThan(0);
+  // Arrivals are handed off without being awaited; let them reach the
+  // recorder before the snapshot is taken.
+  await new Promise((resolve) => setTimeout(resolve, 0));
+  await expectParity(
+    `workouts-batch.${name}`,
+    stable(
+      {
+        status: res.status,
+        body: res.body,
+        events: events.map(eventFacts),
+        effects: effectRecorder.take(),
+        stored: await state(),
+      },
+      { since: NOW },
+    ),
+  );
+}
+
+beforeAll(async () => {
+  vi.useFakeTimers({ toFake: ["Date"], now: NOW });
+  await truncateAllTables(prisma);
+  const user = await makeUser({ timezone: "UTC" });
+  userId = user.id;
+  session = await makeSession(user);
+});
+
+afterAll(() => {
+  vi.useRealTimers();
+});
+
+describe("POST /api/workouts/batch parity", () => {
+  it("01 a first batch", async () => {
+    await step("01-first-batch", { workouts: FIRST_BATCH });
+  });
+
+  it("02 the same batch again, with a series for a stored workout", async () => {
+    await step("02-same-batch-enrich", {
+      workouts: [
+        ...FIRST_BATCH.slice(0, -1),
+        workout("hk-run-2", "2026-10-08T07:00:00.000Z", 50, {
+          samples: SERIES,
+        }),
+      ],
+    });
+  });
+
+  it("03 a corrected hand-entered workout", async () => {
+    await step("03-manual-correction", {
+      workouts: [
+        workout("manual:ride-1", "2026-10-13T16:00:00.000Z", 65, {
+          sportType: "cycling",
+          source: "MANUAL",
+          totalDistanceM: 2_400,
+        }),
+        workout("manual:ride-1", "2026-10-13T16:00:00.000Z", 65, {
+          sportType: "cycling",
+          source: "MANUAL",
+          totalDistanceM: 2_500,
+        }),
+      ],
+    });
+  });
+
+  it("04 a track kept once the account opts in", async () => {
+    await prisma.user.update({
+      where: { id: userId },
+      data: { storeWorkoutRoutes: true },
+    });
+    await step("04-route-kept", {
+      workouts: [
+        workout("hk-run-3", "2026-10-15T06:30:00.000Z", 45, { route: TRACK }),
+      ],
+    });
+  });
+
+  it("05 a batch over the workout limit", async () => {
+    await step("05-too-large", {
+      workouts: Array.from({ length: 101 }, (_, i) =>
+        workout(`hk-bulk-${i}`, "2026-09-01T07:00:00.000Z", 30),
+      ),
+    });
+  });
+
+  it("06 a batch the schema refuses", async () => {
+    await step("06-invalid", {
+      workouts: [{ sportType: "running", startedAt: "yesterday" }],
+    });
+  });
+
+  it("07 a bridge token naming a source, and one that does not", async () => {
+    const bridge = await makeToken(
+      { id: userId },
+      { permissions: [WORKOUTS_WRITE_SCOPE] },
+    );
+    await step(
+      "07a-bridge-with-source",
+      { workouts: [workout("bridge-1", "2026-10-15T09:00:00.000Z", 20)] },
+      bridge,
+    );
+    const { source: _source, ...unsourced } = workout(
+      "bridge-1",
+      "2026-10-15T09:00:00.000Z",
+      20,
+    );
+    await step("07b-bridge", { workouts: [unsourced] }, bridge);
+  });
+});