From 832da5f5a026bc75c3d2ad67f93cea2676dd0bdc Mon Sep 17 00:00:00 2001
From: JSONbored <49853598+JSONbored@users.noreply.github.com>
Date: Fri, 10 Jul 2026 19:31:21 -0700
Subject: [PATCH] ci: drop dead-weight full-history checkout in validate-code;
 probe runner CPU count

validate-code's Codecov upload steps moved to validate-tests when
coverage was split out (#4815) -- it no longer needs fetch-depth: 0
(measured: shallow checkout is ~3s faster than full-history on this
repo). Also adds a temporary nproc diagnostic to validate-tests to
check whether --maxWorkers=4 (pinned to the assumed standard-runner
vCPU count) actually matches the real runner spec, or whether there's
free parallelism available without adding more shards.
---
 .github/workflows/ci.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7d4bb3a0fc..f247036ec6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -171,8 +171,8 @@ jobs:
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
         with:
-          # Full history so Codecov can resolve the merge base for patch coverage.
-          fetch-depth: 0
+          # Shallow (default depth): this job no longer uploads to Codecov -- that moved to validate-tests
+          # (#ci-shard-coverage) -- so it has no reason to fetch full history anymore.
           ref: ${{ github.event_name == 'pull_request' && github.event.pull_request.head.sha || github.sha }}
       - name: Neutralize untrusted npm config
         run: rm -f .npmrc
@@ -435,6 +435,8 @@ jobs:
         run: npm run build --workspace @jsonbored/gittensory-engine
       - name: Prepare test reports dir
         run: mkdir -p reports/junit
+      - name: Report runner CPU count (temporary diagnostic)
+        run: nproc
       - name: Test with coverage (shard ${{ matrix.shard }}/6)
         id: coverage
         env: