From 15d08a86c6d29423adda33bf74d60bbb8b095bcd Mon Sep 17 00:00:00 2001
From: Diego Rodrigues de Sa e Souza
 <8016841+diegosouzapw@users.noreply.github.com>
Date: Fri, 10 Jul 2026 07:23:06 -0300
Subject: [PATCH] =?UTF-8?q?ci(quality):=20shard=20unit=20fast-path=202?=
 =?UTF-8?q?=E2=86=924=20=E2=80=94=20halves=20the=20heaviest=20job's=20wall?=
 =?UTF-8?q?=20time=20(#6781)?=
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---
 .github/workflows/quality.yml | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
index d1e765cb79..7b10170301 100644
--- a/.github/workflows/quality.yml
+++ b/.github/workflows/quality.yml
@@ -130,15 +130,17 @@ jobs:
       - run: npm run test:vitest
 
   fast-unit:
-    name: Unit Tests fast-path (${{ matrix.shard }}/2)
+    name: Unit Tests fast-path (${{ matrix.shard }}/4)
     # Dynamic runner — see fast-gates (own-origin + flag; fork/unset → ubuntu-latest).
-    # This is the heaviest fast-path job (~9min on ubuntu-latest); the 32-core VPS
-    # cuts it to ~2-3min when the flag is on.
+    # This is the heaviest fast-path job; 4-way sharding (was 2) halves the critical
+    # path again (~8.5min → ~4.5min on ubuntu-latest; ~2min on the 8-slot runner box).
+    # Node's native --test-shard=N/total takes any denominator — only this matrix and
+    # the TEST_SHARD env below encode the shard count.
     runs-on: ${{ (vars.USE_VPS_RUNNER == 'true' && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository)) && fromJSON('["self-hosted","omni-release"]') || 'ubuntu-latest' }}
     strategy:
       fail-fast: false
       matrix:
-        shard: [1, 2]
+        shard: [1, 2, 3, 4]
     env:
       JWT_SECRET: ci-lint-secret-with-sufficient-length-for-validation
       API_KEY_SECRET: ci-lint-api-key-secret-long
@@ -157,7 +159,7 @@ jobs:
       # silenciosamente não rodavam no fast path) e o setupPolyfill não era importado.
       - run: npm run test:unit:ci:shard
         env:
-          TEST_SHARD: ${{ matrix.shard }}/2
+          TEST_SHARD: ${{ matrix.shard }}/4
 
   # ── Pacote 4 (plano mestre testes+CI, aprovado 2026-07-04) ─────────────────────────
   # No-new-warnings por PR via ESLint bulk suppressions nativo (>=9.24). O baseline