From 014682e50925c7be593d97d7259d1b6d3ed057d0 Mon Sep 17 00:00:00 2001
From: David Gwilliam <dhgwilliam@gmail.com>
Date: Wed, 24 Jun 2026 04:24:51 -0700
Subject: [PATCH] feat: auto-flash MCU sketch on post-merge if sketch/ changes

---
 .githooks/post-merge | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/.githooks/post-merge b/.githooks/post-merge
index 846b677..88bac9f 100755
--- a/.githooks/post-merge
+++ b/.githooks/post-merge
@@ -11,6 +11,13 @@ fi
 
 SYSTEMD_CHANGED=$(echo "$CHANGED" | grep -c "^system/" || true)
 SCRIPT_CHANGED=$(echo "$CHANGED" | grep -c "^scripts/" || true)
+SKETCH_CHANGED=$(echo "$CHANGED" | grep -c "^sketch/" || true)
+
+# Reflash MCU if sketch changed
+if [ "$SKETCH_CHANGED" -gt 0 ]; then
+    echo "[githook:post-merge] MCU sketch changed — reflashing..."
+    cd "$REPO" && arduino-cli compile --upload --fqbn arduino:zephyr:unoq sketch/ 2>&1
+fi
 
 # Reinstall systemd units if any changed
 if [ "$SYSTEMD_CHANGED" -gt 0 ]; then