feat(plugins): isolate device integrations

tests/test_session_preparation.py

@@ -9,7 +9,7 @@ from pathlib import Path
 
 import pytest
 
-from k1link.sessions.models import ReplayCommand
+from k1link.sessions.models import ReplayArtifact, ReplayCommand
 from k1link.sessions.preparation import (
     RecordingPreparationSnapshot,
     SessionRecordingPreparationManager,
@@ -25,12 +25,30 @@ def _command(root: Path, session_id: str = "20260717T100000Z_viewer_live") -> Re
     metadata.write_text('{"record_type":"message","sequence":1}\n', encoding="utf-8")
     return ReplayCommand(
         session_id=session_id,
-        source_path=source,
+        plugin_id="test.recording-plugin",
         allowed_root=root,
         session_root=root,
-        replay_byte_length=source.stat().st_size,
-        metadata_byte_length=metadata.stat().st_size,
-        expected_source_sha256=None,
+        primary_artifact_id="primary",
+        artifacts=(
+            ReplayArtifact(
+                artifact_id="primary",
+                path=source,
+                media_type="application/x-test-recording",
+                file_byte_length=source.stat().st_size,
+                replay_byte_length=source.stat().st_size,
+                expected_sha256=None,
+            ),
+            ReplayArtifact(
+                artifact_id="index",
+                path=metadata,
+                media_type="application/x-ndjson",
+                file_byte_length=metadata.stat().st_size,
+                replay_byte_length=metadata.stat().st_size,
+                expected_sha256=None,
+            ),
+        ),
+        timeline_origin_epoch_ns=0,
+        timeline_origin_monotonic_ns=0,
         speed=1.0,
         loop=False,
     )