feat: complete Zeroshot task

[mkceichelbeck]

Created by Zeroshot v2.

[greptile-apps]

Greptile Summary

Adds a root-level marker file recording successful native-v2 Codex/OpenRouter provider validation.

• Adds provider-proof.txt containing native-v2-codex-openrouter-ok.

Confidence Score: 5/5

The PR appears safe to merge because the added marker file does not affect runtime, build, packaging, or verification behavior.

The sole change is an unreferenced text artifact, and no actionable defect or repository-rule violation was identified.

Important Files Changed

Filename	Overview
provider-proof.txt	Adds an inert one-line provider-validation marker with no repository code, workflow, or documented contract consuming it.

_{Reviews (1): Last reviewed commit: "feat: complete Zeroshot task" | Re-trigger Greptile}