feat: add upload and publish commands

artdag.py

@@ -214,12 +214,25 @@ def view(content_hash, output):
 @cli.command("import")
 @click.argument("filepath", type=click.Path(exists=True))
 def import_file(filepath):
-    """Import a local file to cache."""
+    """Import a local file to cache (local server only)."""
     path = str(Path(filepath).resolve())
     result = api_post("/cache/import", params={"path": path})
     click.echo(f"Imported: {result['content_hash']}")
 
 
+@cli.command()
+@click.argument("filepath", type=click.Path(exists=True))
+def upload(filepath):
+    """Upload a file to cache (works with remote servers)."""
+    with open(filepath, "rb") as f:
+        files = {"file": (Path(filepath).name, f)}
+        resp = requests.post(f"{get_server()}/cache/upload", files=files)
+        resp.raise_for_status()
+        result = resp.json()
+    click.echo(f"Uploaded: {result['content_hash']}")
+    click.echo(f"Size: {result['size']} bytes")
+
+
 @cli.command()
 def assets():
     """List known assets."""
@@ -229,5 +242,30 @@ def assets():
         click.echo(f"  {name}: {hash[:16]}...")
 
 
+@cli.command()
+@click.argument("run_id")
+@click.argument("output_name")
+@click.option("--l2", envvar="ARTDAG_L2", default="http://localhost:8200",
+              help="L2 server URL")
+def publish(run_id, output_name, l2):
+    """Publish an L1 run to L2 (register ownership).
+
+    RUN_ID: The L1 run ID to publish
+    OUTPUT_NAME: Name for the registered asset
+    """
+    # Post to L2 server
+    resp = requests.post(
+        f"{l2}/registry/record-run",
+        json={"run_id": run_id, "output_name": output_name}
+    )
+    resp.raise_for_status()
+    result = resp.json()
+
+    click.echo(f"Published to L2!")
+    click.echo(f"Asset: {result['asset']['name']}")
+    click.echo(f"Hash: {result['asset']['content_hash']}")
+    click.echo(f"Activity: {result['activity']['activity_id']}")
+
+
 if __name__ == "__main__":
     cli()