fix(detector): detect partial bound method replay

[prasannakotyal]

KernelGuard-Red-Submission: 155

Detects functools.partial entrypoints that wrap a bound instance method which replays from mutated instance state.

The pass requires:

• module-level custom_kernel = partial(instance.method, ...)
• a resolvable module-level instance and class method
• a no-compute fast path in that method that does not depend on live input
• fast-path return from an instance attribute
• mutation of that same instance attribute inside the method

Local validation:

• uv run python -m py_compile kernelguard.py
• uv run python /home/nino/repos/paradigma/kernelguard_bypasses/eval_blue_patch.py /home/nino/repos/paradigma/competition_state/kernelguard_mirror/kernelguard.py

Target red fixture: red_35_partial_bound_method_replay.py

[github-actions]

KernelGuard Blue Evaluation

• Evaluation job: 138
• Blue submission: 110
• Result: passed
• Target red submission caught: True
• Validation suite: TP 20/20, FP 20/20
• Surgicalness score: 1.0
• Workflow run: https://github.com/SinatrasC/kernelguard/actions/runs/25254288088

[SinatrasC]

Thanks for the KernelGuard Flywheel Campaign contribution. This PR is now superseded by the consolidated rule-family implementation in #273, which folds this detector coverage together with the related passing-eval variants.