⚡ Remove artificial delay from askCrystalBall for faster chat response

[marcin2121]

💡 What:
Removed the await new Promise(resolve => setTimeout(resolve, 800)); artificial 800ms delay from the askCrystalBall function in lib/magic.ts.

🎯 Why:
The delay was originally intended for a "better effect in UI", but executing it in a backend function (askCrystalBall is called directly by the /api/chat route before calling AI models) causes the server to stall unnecessarily. In environments like Vercel, this unnecessarily uses up billable execution time and slows down the Time to First Byte (TTFB) of chat API responses. If an artificial typing or "thinking" delay is desired, it should be strictly implemented on the client side (frontend UI).

📊 Measured Improvement:
Measured execution time of askCrystalBall for 5 iterations using a local benchmark:

• Baseline Average: 801.17 ms per iteration.
• New Average: 0.04 ms per iteration.
• Improvement: ~801 ms faster response preparation time (~100% relative improvement for this specific backend function). This will directly decrease the overall response time of /api/chat calls by ~800ms.

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PR created automatically by Jules for task 14488035108780019535 started by @marcin2121

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