[nathfavour]

• 🚨 Severity: MEDIUM
• 💡 Vulnerability: Outbound Discord webhook notifications did not enforce an explicit request timeout on fetch, allowing slow or malicious remote endpoints to tie up socket connections and worker threads indefinitely (resource exhaustion / slowloris DoS). In addition, isValidDiscordWebhookUrl did not strip trailing root dots from hostnames before domain matching.
• 🎯 Impact: High socket concurrency or unresponsive remote webhooks could starve serverless worker threads; inconsistent hostname matching could lead to domain verification edge cases.
• 🔧 Fix: Added signal: AbortSignal.timeout(5000) to the outbound notification fetch in app/api/discord/route.ts and normalized url.hostname with .replace(/\.+$/, '') before domain checking.
• ✅ Verification: Added unit tests in app/api/discord/route.test.ts for trailing dot hostname verification and verifying that an AbortSignal timeout is attached during outbound webhook dispatch. Ran full test suite (all tests pass) and linting.

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PR created automatically by Jules for task 4982111819576418740 started by @nathfavour

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