Command progress and notifications

[pento]

Show real-time feedback in the browser as Claude processes commands — progress states in the sidebar and snackbar notifications on completion/failure.

Command Status Polling

Poll GET /wpce/v1/commands?post_id={current}&since={last_check} from the browser to track active command status changes. Polling interval:

• Every 2s while a command is running
• Every 10s when idle (to catch status updates from commands submitted in other tabs)
• Stop polling when no recent commands exist

Sidebar: Command History

List of recent commands in the AI Actions sidebar panel with status indicators:

• Pending — clock icon, "Waiting for Claude..."
• Claimed/Running — spinner, "Claude is working..."
• Completed — checkmark, "Done"
• Failed — X icon, error message from the message field
• Expired — clock icon, "Timed out"
• Cancelled — dash icon, "Cancelled"

Running commands show a cancel button. History is scoped to the current post and current session (no need to persist across page reloads beyond what the REST API returns).

Snackbar Notifications

Use @wordpress/notices to show snackbar notifications:

• Completed: "Claude finished proofreading your post." / "Claude finished reviewing your post." (message varies by prompt type)
• Failed: "Claude couldn't complete the review: [message]"
• Expired: "Command timed out — Claude may not be connected."

Notifications should not stack — if multiple commands complete in quick succession, show the most recent.

Acceptance Criteria

• Browser polls for command status updates at appropriate intervals
• Sidebar shows command history with correct status icons and labels
• Running commands have a cancel button
• Snackbar notifications on completion, failure, and expiry
• Notification text is contextual to the prompt type
• Polling frequency adjusts based on whether a command is active
• Reuses the @wordpress/data store from AI Actions sidebar panel #32

Part of #28.