PR-M: parca-agent recipe + delete pyspy — DEFERRED to v0.4.0+

[trilamsr]

Per parca-agent OTel Profiles research (2026-05-31).

Verdict from research: VAPOR. parca-agent v0.47.1 has NO OTel Profiles exporter (output goes to Parca-server via native gRPC, not OTLP). OTel Profiles signal still Alpha (Mar 2026), collector needs --feature-gates=+service.profilesSupport.

Defer triggers:

1. OTel Profiles reaches Beta + feature-gate removed
2. AND either parca-agent gains OTLP export OR re-scope PR-M to "otelcol-ebpf-profiler sibling distro" pattern

v0.3.0 action: keep pyspy. Do NOT ship parca-agent recipe v0.3.0.

Research memo in memory/project_pivot_pr_sequence.md.