🧹 chore: Right-size Depot runners

[jpmcb]

👨🏼

Refs PCC-1288

🤖

Right-sizes compute-heavy Depot runners for PCC-1288.

• Uses 8 CPU / 32 GB runners for Rust or multi-target build and release jobs.
• Leaves lightweight metadata and administrative jobs on the base runner.

Validation

• Parsed all changed workflow YAML with Ruby Psych
• Ran git diff --check

[linear-code]

PCC-1288

[greptile-apps]

Greptile Summary

Updates compute-intensive CI, nightly, and release jobs to use 8-vCPU Depot runners while preserving GitHub-hosted runners for fork pull requests.

• Moves lint/test and multi-target CI build jobs to depot-ubuntu-24.04-8.
• Moves nightly and tagged release builds to the same larger runner.
• Leaves lightweight and administrative jobs on their existing runners.

Confidence Score: 5/5

The PR appears safe to merge because the changed jobs use a valid Depot runner label and preserve existing workflow routing.

The changes only adjust runner capacity for compute-intensive jobs; no blocking or independently actionable failure remains.

Important Files Changed

Filename	Overview
.github/workflows/ci.yaml	Selects 8-vCPU Depot runners for lint/test and multi-target builds while preserving the fork-PR fallback.
.github/workflows/nightly.yaml	Selects an 8-vCPU Depot runner for nightly artifact builds without changing workflow behavior.
.github/workflows/release.yaml	Selects an 8-vCPU Depot runner for tagged release publication without changing permissions or release steps.

_{Reviews (1): Last reviewed commit: "🧹 chore(ci): right-size Depot runners (..." | Re-trigger Greptile}