The scan route was added to security.routes.ts which isn't loaded by the
app router. The app loads security-risk.routes.ts at /security/*. Added
the scan route to security-risk.routes.ts so /security/scan resolves.
Verified: Scan Image page loads at /security/scan with heading, image
input, and submit button. 111/111 canonical routes passing.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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