From e22e2aed72e0dbc3fd0813f9871135697f21c387 Mon Sep 17 00:00:00 2001
From: Marcin Rataj <lidel@lidel.org>
Date: Thu, 22 Jan 2026 15:23:16 +0100
Subject: [PATCH] ci(deploy): add concurrency to prevent duplicate artifacts

prevents multiple deploy workflows from running concurrently for the
same branch, which caused "multiple github-pages artifacts" errors
when builds completed close together.
---
 .github/workflows/deploy.yml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 170d43c2..b49fdebf 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -21,6 +21,12 @@ on:
 env:
   BUILD_PATH: 'blog-build'
 
+# Prevent concurrent deployments to the same target
+# This avoids the "multiple github-pages artifacts" error
+concurrency:
+  group: deploy-${{ github.event.workflow_run.head_branch }}
+  cancel-in-progress: true
+
 jobs:
   deploy-ipfs:
     if: github.event.workflow_run.conclusion == 'success'