From e3f3fc72fe4a6f19d2e6a04d76e6fe51900c26ff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Iv=C3=A1n=20Montiel=20Cardona?=
 <ivan_montiel2013@hotmail.com>
Date: Sat, 11 Jul 2026 02:51:57 -0600
Subject: [PATCH] ci(publish): stamp a rolling BUSL Change Date (release + 4
 years)

Each published version now gets its Change Date set to the release date plus
four years at pack time, so every release carries its own full 4-year BUSL
window before converting to MIT.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 .github/workflows/publish.yml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index fc0384f..dbe7875 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -73,6 +73,22 @@ jobs:
           --no-build
           --logger "console;verbosity=normal"
 
+      # ── Rolling BUSL Change Date: stamp each packed license file with
+      #    (release date + 4 years) so every published version gets a full
+      #    4-year BUSL window before it converts to the Change License (MIT). ──
+      - name: Stamp BUSL Change Date (release + 4 years)
+        run: |
+          CHANGE_DATE=$(date -u -d "+4 years" +%Y-%m-%d)
+          stamped=0
+          for f in LICENSE-BUSL.txt LICENSE; do
+            if [ -f "$f" ] && grep -qE '^Change Date:' "$f"; then
+              sed -i -E "s|^(Change Date: +).*|\1$CHANGE_DATE|" "$f"
+              echo "$f -> Change Date $CHANGE_DATE"
+              stamped=1
+            fi
+          done
+          [ "$stamped" = 1 ] || { echo "::error::no BUSL license file with a Change Date found"; exit 1; }
+
       # ── Pack ─────────────────────────────────────────────────────────────────
       - name: Pack Avr8Sharp
         run: >