Enable Delete Functionality from Process List View (Launchpad Context)

**User Story:**
As a user, I want to be able to delete a process directly from the Launchpad list view without entering the process, so that I can quickly remove outdated or incorrect processes and keep my workspace clean.

**Acceptance Criteria / Definition of Complete:**
- A "Delete process" option is available in the context menu for each process in the Launchpad list.
- Selecting "Delete process" opens a confirmation dialog to avoid accidental deletions.
- Upon confirmation, the selected process is permanently removed from the list and backend.
- The user receives feedback (e.g., toast or alert) confirming successful deletion.
- Unit tests are implemented to ensure:
- The delete functionality works as expected.
- No impact on other processes or features.
- Proper error handling if deletion fails.
**Design Reference:**
Refer to the updated Launchpad UI where the context menu includes the "Delete process" option.

Start by locating the Launchpad list view and its per-process context menu, then trace the existing process deletion path in the frontend and backend. Use the updated Launchpad design reference while checking how confirmation dialogs and success or error feedback are handled. Done means the menu action, confirmation, backend removal, feedback, and unit tests for success, isolation, and failure are covered.

Written by the indexing model from the issue text.