chore(deps): align QPK pin to de18c2e9d93b

Automated downstream QPK pin update after QPK_PIN landed on main.

Co-Authored-By: Claude <noreply@anthropic.com>

Author: QuantStrategyLab QPK Sync

pyproject.toml

@@ -18,7 +18,7 @@ dependencies = [
     "pytest",
     "pytz",
     "requests",
-    "quant-platform-kit @ git+https://github.com/QuantStrategyLab/QuantPlatformKit.git@2381aa4577e9fd6329053a73a1c888929170eaf3",
+    "quant-platform-kit @ git+https://github.com/QuantStrategyLab/QuantPlatformKit.git@de18c2e9d93bcfc2220148a99749447059a6f4c6",
     "us-equity-strategies @ git+https://github.com/QuantStrategyLab/UsEquityStrategies.git@17ddb86c72d44b2c7b78ba7a10d8f71b21180166",
 ]
 license = "MIT"
@@ -82,5 +82,5 @@ show_missing = true
 
 [tool.uv]
 override-dependencies = [
-  "quant-platform-kit @ git+https://github.com/QuantStrategyLab/QuantPlatformKit.git@2381aa4577e9fd6329053a73a1c888929170eaf3",
+  "quant-platform-kit @ git+https://github.com/QuantStrategyLab/QuantPlatformKit.git@de18c2e9d93bcfc2220148a99749447059a6f4c6",
 ]