🛡️ Sentinel: [MEDIUM] Fix Information Leakage via Error Messages

[DerUntote]

🚨 Severity: MEDIUM
💡 Vulnerability: Raw internal RPC and system error messages (e.g., from bitcoind-rpc client) were being sent directly to Discord users via message.reply(err.message). This can potentially leak sensitive infrastructure information or internal system states.
🎯 Impact: An attacker or user could glean insights into internal daemon operations, connection errors, or server details by intentionally triggering failed transactions or operations and observing the error text.
🔧 Fix: Modified all tipper modules in bot/modules/ to catch these errors, log them internally using console.error(err), and instead reply to the user with a safe, generic message (An internal error occurred.). I also appended .catch(console.error) to the message delete promises to prevent unhandled promise rejections if deleting the message fails (e.g., due to permissions).
✅ Verification: Ran node -c on all modified files to ensure syntax validity, followed by npm run precommit for code formatting. I successfully verified the code structure via diff review. No regressions are expected as normal successful flows remain completely unaffected.

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PR created automatically by Jules for task 9538634825032103516 started by @DerUntote

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