Implement bulk task actions (select, mark done, delete)

[Copilot]

Adds bulk operations for tasks on /tasks page per TF-4 requirements.

Changes

Server Actions (app/(dashboard)/tasks/actions.ts)

• bulkUpdateTaskStatus(taskIds[], status) - Type-safe bulk status updates
• bulkDeleteTasks(taskIds[]) - Bulk deletion with auth checks

UI Components (components/task-list.tsx)

• Selection state: individual checkboxes + "Select All"
• Bulk actions bar appears when tasks selected, shows count
• Dropdown menu: "Mark as Done" | "Delete"
• Confirmation dialog for destructive operations
• Optimistic updates for immediate UI feedback

Tests

• Unit: auth validation, error handling, success scenarios (9 tests)
• E2E: select all, bulk mark done, bulk delete with confirmation (4 tests)

Screenshots

Bulk selection and actions menu

Delete confirmation

Implementation Notes

Uses useOptimistic for responsive UI during server operations. Status parameter constrained to valid enum values. Label properly associated with checkbox via htmlFor for accessibility.

Original prompt

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This section details on the original issue you should resolve

<issue_title>TF-4 Display Task Search Results</issue_title>
<issue_description> Implement the work described in Jira ticket TF-4, including looking at any Figma files mentioned. When finished, transition the ticket to "In Reivew".

To do the work use the following prompt chain which describes steps for best implementing the feature:

1. Open the repository on GitHub: https://github.com/bitovi/ai-enablement-prompts.
2. Execute the prompt writing-code/generate-feature/generate-feature.md</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes TF-4 Display Task Search Results #302

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