BUG Legacy /targets links redirect to Home instead of Target Registry

Inspect frontend/src/App.tsx around lines 614-625 and 674, then reproduce the routing behavior by opening /targets in the frontend or with the provided Playwright steps. Add the compatibility redirect so /targets reaches /registry/targets instead of the wildcard Home route, and verify the resulting pathname.

Describe the bug

The target-management route moved from /targets to /registry/targets, but the application does not preserve the old route as a compatibility redirect. Opening a saved /targets link falls through to the wildcard route and silently redirects to Home (/) instead of the Target Registry.

This was reproduced on commit 6fd719317c09228cb332cacf5d76b6602610b591. Fresh searches across open issues and pull requests found no matching report. Open PR #2699 was also inspected; it does not add the missing redirect.

Relevant source: frontend/src/App.tsx:614-625,674.

Steps/Code to Reproduce

1. Start the frontend.
2. Navigate directly to /targets, which was the canonical target-management route before the Converter Registry change.
3. Wait for application routing to settle.
4. Observe that the URL becomes / and Home is displayed.

await page.goto('/targets');
console.log(new URL(page.url()).pathname);
// Actual: '/'
// Expected: '/registry/targets'

Expected Results

The legacy /targets route should redirect to /registry/targets, preserving bookmarks, documentation links, browser history, and user intent.

For example:

<Route path="/targets" element={<Navigate to="/registry/targets" replace />} />

Actual Results

The wildcard route redirects /targets to /. Home is shown with no explanation, and the Target Registry is not visible.

Users can recover by opening Registry manually, but existing links silently lose their destination.

Screenshots

N/A. The URL transition and visible Home route are deterministic from the steps above.

Versions

• OS: Windows
• Browser: Chromium through Playwright 1.63.0
• Node: 25.7.0
• Python: 3.14.4
• PyRIT: 1.2.0.dev0, commit 6fd719317c09228cb332cacf5d76b6602610b591
• Python package inventory: N/A; this is a frontend routing defect.