Show export failures and unexpected stops in package.sh and release.sh

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tools/package.sh

@@ -21,7 +21,15 @@ sed -i \
     export_presets.cfg
 
 rm -rf build dist
-make export-linux export-windows export-android export-macos export-web >/dev/null
+# Les journaux d'export sont conserves ; en cas d'echec on en montre la fin au
+# lieu de s'arreter sans un mot.
+EXPORT_LOG="$(mktemp)"
+trap 'rm -f "${EXPORT_LOG}"' EXIT
+if ! make export-linux export-windows export-android export-macos export-web >"${EXPORT_LOG}" 2>&1; then
+    echo "ERREUR : un export a echoue. Fin du journal :" >&2
+    tail -n 25 "${EXPORT_LOG}" >&2
+    exit 1
+fi
 
 write_notice() {
     cat > "$1/LISEZMOI.txt" <<NOTICE

tools/release.sh

@@ -22,6 +22,7 @@ for arg in "$@"; do
 done
 
 fail() { echo "ERREUR : $*" >&2; exit 1; }
+trap 'echo "ERREUR : arret inattendu a la ligne ${LINENO} (code $?)" >&2' ERR
 
 VERSION="$(sed -n 's/^config\/version="\(.*\)"/\1/p' project.godot)"
 [ -n "${VERSION}" ] || fail "config/version absent de project.godot"