Remove PGO from release workflow

[jeremy]

Summary

• Drop the "Collect PGO profile" step from the release workflow — it iterated 30+ packages at 3s each for 16 benchmarks across 3 packages (dateparse, names, output), adding 5+ minutes to every release for code that isn't on any hot path
• Remove -pgo=auto from GoReleaser build flags
• Remove Makefile targets: build-pgo, collect-profile, clean-pgo
• Delete scripts/collect-profile.sh
• Clean up .gitignore entry for default.pgo

Test plan

• make check passes (fmt, vet, lint, unit tests, e2e tests, surface check)
• make build produces binary without PGO flags
• Next release tag confirms workflow completes faster without the step

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Summary by cubic

Remove PGO from the release pipeline and build tooling to cut ~5 minutes from each release. Binaries are now built without PGO.

• Refactors
  • Remove PGO profile collection from .github/workflows/release.yml
  • Drop -pgo=auto from .goreleaser.yaml
  • Delete PGO build tooling: Makefile targets (build-pgo, collect-profile, clean-pgo) and scripts/collect-profile.sh; remove stale collect-profile notes/help and update clean-all to remove profiling/benchmark artifacts
  • Remove .gitignore entry for default.pgo
  • Clear .surface-breaking for v0.3.1

^{Written for commit d0e65b3. Summary will update on new commits.}

[github-actions]

Sensitive Change Detection (shadow mode)

This PR modifies control-plane files:

• .github/workflows/release.yml
• .goreleaser.yaml

Shadow mode — this check is informational only. When activated, changes to these paths will require approval from a maintainer.

[chatgpt-codex-connector]

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[cubic-dev-ai]

1 issue found across 5 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="Makefile">

<violation number="1" location="Makefile:255">
P2: The `bench-cpu` and `bench-mem` targets still print `"Note: For full multi-package profiling, use 'make collect-profile'"` (Makefile lines 114 and 125), but the `collect-profile` target was removed in this PR. These echo lines should be deleted or reworded so they don't reference a non-existent target.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[Copilot]

Pull request overview

Removes Profile-Guided Optimization (PGO) generation/usage from the release pipeline and local tooling to speed up releases and simplify builds.

Changes:

• Drops the “Collect PGO profile” step from the GitHub release workflow.
• Removes -pgo=auto and related PGO hooks from GoReleaser.
• Deletes PGO-related Makefile targets/flags and removes the profile collection script and .gitignore entry.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
scripts/collect-profile.sh	Deletes the benchmark-based profile collection script.
Makefile	Removes PGO flags/targets and updates clean-all/help output accordingly.
.goreleaser.yaml	Removes PGO detection hook and -pgo=auto build flag.
.gitignore	Removes ignore rule for default.pgo.
.github/workflows/release.yml	Removes the PGO profiling/merge step from the release workflow.

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