COMPLETE - Add search and filter functionality to tasks page

[Copilot]

This PR implements the search and filter functionality for the /tasks page as specified in Jira ticket TF-2, matching the provided Figma designs exactly.

Changes Made

New Components

• TaskSearchFilter: A reusable component that provides search input with icons and filter dropdown functionality
• Includes search input with search icon (left) and clear button (right)
• Filter dropdown with Status and Priority sections
• All filter options start selected by default
• Real-time filtering as user types or changes selections

Enhanced Components

• TaskList: Updated to display a "No tasks found" message when no tasks match the current search and filter criteria
• Tasks Page: Converted from server component to client component to handle interactive filtering

Server Actions

• searchAndFilterTasks: New server action for potential future server-side filtering (currently using client-side for better performance)

Key Features

Search Functionality

The search input allows users to find tasks by typing in task names or descriptions. The search is case-insensitive and filters in real-time as the user types. A clear button (X icon) appears when text is entered and clears the search when clicked.

Filter Functionality

The filter dropdown provides two sections:

• Status: Todo, In Progress, Review, Done
• Priority: High, Medium, Low

Users can select/deselect multiple options in each category. All options start selected by default to show all tasks initially.

Combined Search & Filter

Both search and filters work together seamlessly. Tasks must match both the search query (if any) and the selected filter criteria to be displayed.

No Results State

When no tasks match the current search and filter criteria, users see a clear message: "No tasks found" with an explanation subtitle.

Technical Implementation

• Client-side filtering for optimal performance and responsiveness
• TypeScript with proper type definitions for all new components
• React hooks (useState, useEffect, useCallback) for state management
• shadcn/ui components maintaining consistency with existing design system
• Accessibility considerations with proper ARIA labels and keyboard navigation

Screenshots

Search and Filter Interface:

Filter Dropdown with Status and Priority Sections:

The implementation follows the existing project patterns and maintains code quality with proper linting and successful builds. All acceptance criteria from the Jira ticket have been fulfilled and the ticket has been transitioned to "In Review" status.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>TF-2 Tasks: Search and Filter (LOCAL)</issue_title>
<issue_description> Implement the work described in Jira ticket TF-2, 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 #199

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