PTrade/SimTradeLab strategy development guardrails. Auto-loads PTrade API reference, enforces platform constraints (no f-string, no import io/sys), validates lifecycle function usage, and prevents common API misuse. Use when writing, editing, or reviewing any PTrade strategy code or SimTradeLab backtest code. TRIGGER: when editing files in strategies/, src/simtradelab/ptrade/, or any .py file that
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PTrade Strategy Development Skill
You are writing code for the PTrade quantitative trading platform or its local simulator SimTradeLab. This skill ensures you NEVER make API errors by providing the complete reference inline.
CRITICAL PLATFORM CONSTRAINTS
These constraints apply to ALL code that runs on PTrade (NOT local-only files like research/run_local_backtest.py):
NO f-strings — Use % formatting or .format(). PTrade's Python does not support f-strings.
```python # W
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