refactor(web): move the produced-files row into its own plugin package

ui-conversation now owns only the conversation.chat.turnTail hole; the row,
its derivation, and its copy live in @deepseek-ai/dsh-client-ui-deliverables,
composed in or out by one cordis.yml line.

apps/cli/config/web.cordis.yml

@@ -141,6 +141,11 @@
     - id: ui-conversation
       name: '@deepseek-ai/dsh-client-ui-conversation'
 
+    # Turn tail: the produced-files row under each closing assistant message.
+    # Remove this entry to turn the surface off; the tail hole renders empty.
+    - id: ui-deliverables
+      name: '@deepseek-ai/dsh-client-ui-deliverables'
+
 
     - id: ui-workspace
       name: '@deepseek-ai/dsh-client-ui-workspace'

apps/cli/package.json

@@ -30,6 +30,7 @@
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
     "@deepseek-ai/dsh-client-ui-command": "workspace:^",
     "@deepseek-ai/dsh-client-ui-conversation": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-deliverables": "workspace:^",
     "@deepseek-ai/dsh-client-ui-goal": "workspace:^",
     "@deepseek-ai/dsh-client-ui-layout": "workspace:^",
     "@deepseek-ai/dsh-client-ui-model": "workspace:^",