[CI] Fix Qwen3.8 pre-commit gates

[yangzhuxinyzx]

Purpose

Fix the post-merge pre-commit failures from #477 without changing runtime semantics.

Base and scope

• Base SHA: b295ab94afeddb875b03ddbd0f0171fa3ab83f38
• Head SHA: 7388c6f98c
• Replace a mypy-invalid mock lambda with an explicit function and narrow the captured config type.
• Apply the exact Ruff formatter output reported by CI to four files.

Test Plan and Result

• Focused hybrid PLE/dual-graph tests: 6 passed
• Ruff format: passed
• Ruff check: passed
• mypy Python 3.11: passed
• mypy Python 3.12: passed
• mypy Python 3.13: passed
• git diff --check: passed

No production behavior or performance path changes.