Add build/install scripts

scripts/apply-patches.sh

@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+PATCHDIR="${ROOT}/patches"
+
+usage() {
+  cat <<USAGE
+Usage: $0
+Applies patches/*.patch to the working tree (idempotent).
+USAGE
+}
+
+if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
+  usage
+  exit 0
+fi
+
+cd "$ROOT"
+
+if [[ ! -d "$PATCHDIR" ]]; then
+  echo "ERROR: patches/ directory not found at: $PATCHDIR" >&2
+  exit 1
+fi
+
+# Apply patches only if they are not already applied.
+# We use --dry-run to test applicability; if it fails, we assume it's already applied.
+shopt -s nullglob
+patches=( "$PATCHDIR"/000[1-4]-*.patch )
+#patches=( "$PATCHDIR"/*.patch )
+if (( ${#patches[@]} == 0 )); then
+  echo "ERROR: no patches found in $PATCHDIR" >&2
+  exit 1
+fi
+
+for p in "${patches[@]}"; do
+  echo "==> Checking $p"
+  if patch --dry-run -p1 < "$p" >/dev/null 2>&1; then
+    echo "==> Applying $(basename "$p")"
+    patch -p1 < "$p"
+  else
+    echo "==> Skipping $(basename "$p") (already applied or does not apply cleanly)"
+  fi
+done
+
+echo "Done."