Teach the Agent CPU and Python broad-to-narrow profiling

[itdevwu]

Goal

Make an unknown CPU or mixed workload as actionable to an agent as the existing GPU aggregate workflow.

Acceptance criteria

• The Skill chooses sampled CPU, syscall, CPython runtime, GPU aggregate, or direct exact routes from the question and validated capabilities.
• CPU and GPU inventories may run concurrently for a mixed workload while retaining independent bounds, artifacts, failures, and perturbation.
• Sampled hotspots and aggregate groups produce hypotheses; every exact selector still passes read-only validation before attachment.
• Python semantic coverage, native fallback, sampling uncertainty, drops, stack truncation, and permission failures remain visible.
• Deterministic forward tests cover unknown CPU, Python, mixed CPU/GPU, known-selector, existing-artifact, and unsupported-runtime routes.
• The user is not required to run manual nm, readelf, perf, or py-spy before the agent can begin narrowing.