Fix buy price limit: cap at maxProbability to prevent slippage exceed…

[Adialia1]

…ing limit

The maxProbability filter (0.90) only checked the trader's signal price, but the slippage tolerance (10%) could push the actual execution price above the limit. Now the buy price limit is hard-capped at maxProbability so the bot never pays more than the configured maximum.

https://claude.ai/code/session_01XwJtbiAM1zP68HogpG66Gz

Description

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Code refactoring

Changes Made

Testing

• Tested with DRY_RUN=true
• Tested with small amounts
• Tested on multiple Node.js versions
• All existing tests pass
• Added new tests for new features

Checklist

• My code follows the project's code style
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation (README.md, etc.)
• My changes generate no new warnings
• I have checked my code doesn't expose any secrets or sensitive data
• I have tested this with real Polymarket API (or explained why not)

Screenshots (if applicable)

Related Issues

Additional Notes