fix: add home route entry to 404 terminal navigation menu (#205)

[DarkSorcerer14]

Overview

Closes #205

This PR adds home/ as the first entry in the simulated terminal ls /valid-routes output on the 404 recovery page, providing users with a direct way to return to the site's home page.

Changes Made

• File Modified: frontend/404.html (lines 229–239)
• Prepend the home/ navigation entry to match the exact target output order requested in the issue.
• Wired the entry to link directly to the application root (/) using the existing .highlight a class styles for perfect green glow/hover consistency.
• Retained proper design and typography alignment by utilizing the standard    character spacing.

UI Layout Comparison

• Before: leaderboard/ registration/ about/
• After: home/ leaderboard/ registration/ about/

Verification

• HTML structure renders visually aligned with the mock CLI design.
• Home route properly redirects to the root path (/).

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