Refactor Permutation Visualizer Interaction Model

[aaylward]

This PR refactors the PermutationVisualizer component to improve its pedagogical value and user experience.

Key Changes:

1. Interaction Model: Replaced the previous drag-and-drop system, which allowed users to map multiple domain elements to the same image element (creating non-bijective functions), with a swap-based interaction. Users now swap elements in the bottom row (Image) relative to a fixed top row (Domain). This constraint ensures that the state always represents a valid permutation.
2. Visual Structure: Explicitly labels the visualization as "Two-Line Notation", with the top row representing the input (1, 2, 3, 4) and the bottom row representing the output.
3. Real-time Feedback: The "Cycle Graph" and "Cycle Notation" now update instantly as users swap elements, reinforcing the connection between different representations of the same permutation.
4. UX Polish: Updated instructions and removed error states associated with invalid mappings.

Verification:

• Manual Verification: Verified using a Playwright script that simulated drag-and-drop swaps and confirmed the resulting cycle notation updates correctly (e.g., swapping 1 and 2 results in (1 2)).
• Regression Testing: Ran the full test suite (npm run test:run), passing all 204 tests.

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PR created automatically by Jules for task 5987427631121500021 started by @aaylward

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