feat: add --publish and --republish options to meta command

- Add --publish <name> to publish cache items to L2 with asset name
- Add --publish-type to specify asset type (image, video)
- Add --republish to sync metadata updates to already-published items
- Requires origin to be set before publishing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

artdag.py

@@ -445,11 +445,17 @@ def publish(run_id, output_name):
 @click.option("--folder", "-f", help="Set folder path")
 @click.option("--add-collection", help="Add to collection")
 @click.option("--remove-collection", help="Remove from collection")
-def meta(content_hash, origin, origin_url, origin_note, description, tags, folder, add_collection, remove_collection):
+@click.option("--publish", "publish_name", help="Publish to L2 with given asset name")
+@click.option("--publish-type", default="image", help="Asset type for publishing (image, video)")
+@click.option("--republish", is_flag=True, help="Re-sync with L2 after metadata changes")
+def meta(content_hash, origin, origin_url, origin_note, description, tags, folder, add_collection, remove_collection, publish_name, publish_type, republish):
     """View or update metadata for a cached item.
 
     With no options, displays current metadata.
     With options, updates the specified fields.
+
+    Use --publish <name> to publish to L2 (requires origin to be set).
+    Use --republish to sync metadata changes to L2.
     """
     token_data = load_token()
     if not token_data.get("access_token"):
@@ -458,6 +464,52 @@ def meta(content_hash, origin, origin_url, origin_note, description, tags, folde
 
     headers = {"Authorization": f"Bearer {token_data['access_token']}"}
 
+    # Handle publish action
+    if publish_name:
+        try:
+            resp = requests.post(
+                f"{get_server()}/cache/{content_hash}/publish",
+                json={"asset_name": publish_name, "asset_type": publish_type},
+                headers=headers
+            )
+            if resp.status_code == 400:
+                click.echo(f"Error: {resp.json().get('detail', 'Bad request')}", err=True)
+                sys.exit(1)
+            if resp.status_code == 404:
+                click.echo(f"Content not found: {content_hash}", err=True)
+                sys.exit(1)
+            resp.raise_for_status()
+            result = resp.json()
+            click.echo(f"Published to L2!")
+            click.echo(f"Asset name: {result['asset_name']}")
+            click.echo(f"Activity: {result['l2_result']['activity']['activity_id']}")
+        except requests.RequestException as e:
+            click.echo(f"Failed to publish: {e}", err=True)
+            sys.exit(1)
+        return
+
+    # Handle republish action
+    if republish:
+        try:
+            resp = requests.patch(
+                f"{get_server()}/cache/{content_hash}/republish",
+                headers=headers
+            )
+            if resp.status_code == 400:
+                click.echo(f"Error: {resp.json().get('detail', 'Bad request')}", err=True)
+                sys.exit(1)
+            if resp.status_code == 404:
+                click.echo(f"Content not found: {content_hash}", err=True)
+                sys.exit(1)
+            resp.raise_for_status()
+            result = resp.json()
+            click.echo(f"Re-synced with L2!")
+            click.echo(f"Asset name: {result['asset_name']}")
+        except requests.RequestException as e:
+            click.echo(f"Failed to republish: {e}", err=True)
+            sys.exit(1)
+        return
+
     # If no update options, just display current metadata
     has_updates = any([origin, origin_url, origin_note, description, tags, folder, add_collection, remove_collection])