Task “Favorites/Bookmarks” + Vendor-aware command picker in Tasks

Problem

In the Tasks tab, running common commands (e.g., terraform destroy -auto-approve) is unnecessarily manual:

• I have to retype frequently used commands, or

• scroll to find the last time I ran the task and click Perform again.

This slows down power users and also hides discoverability for less experienced users (they may not realize what is possible via Tasks).

Proposal

Add two complementary UX improvements:
1) Bookmarked / Favorite Tasks (user-level)

Allow users to save/pin common task commands so they can run them quickly without retyping or scrolling.
2) Vendor-aware command dropdown / command palette (discoverability + efficiency)

In the command input area, provide a dropdown (or command palette) that shows available commands for the detected vendor, plus short descriptions and examples.