Prompt Suggestion Code Refactoring

What: The prompt suggestion function was refactored for better code organization and maintainability.

Details:

• The system prompt text was extracted from inline to a module-level constant (iH8 at line 366298)
• The function was converted from promise-chain style to explicit async/await
• Response parsing changed from .then() chain with .find() to a for...of loop with early return
• Variables were extracted for better readability (cacheSafeParams to Q, canUseTool callback to B)
• Evidence: nH8() at lines 366252-366273 in v2.0.69 vs lines 366252-366280 in v2.0.68