chore: bootstrap independent git workflow

Co-Authored-By: Paperclip <noreply@paperclip.ing>

scripts/release/package-unix.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [ "$#" -ne 2 ]; then
+  echo "usage: scripts/release/package-unix.sh <target-triple> <binary-path>" >&2
+  exit 2
+fi
+
+target_triple="$1"
+binary_path="$2"
+repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+version="$(node "$repo_root/scripts/release/version.mjs")"
+artifact_basename="dbtool-$version-$target_triple"
+artifact_dir="$repo_root/dist/$artifact_basename"
+archive_path="$repo_root/dist/$artifact_basename.tar.gz"
+checksum_path="$archive_path.sha256"
+
+mkdir -p "$repo_root/dist"
+rm -rf "$artifact_dir"
+mkdir -p "$artifact_dir"
+
+cp "$binary_path" "$artifact_dir/dbtool"
+cp "$repo_root/README.md" "$artifact_dir/README.md"
+cp "$repo_root/RELEASE_RUNBOOK.md" "$artifact_dir/RELEASE_RUNBOOK.md"
+cp "$repo_root/SMOKE_RUNBOOK.md" "$artifact_dir/SMOKE_RUNBOOK.md"
+
+tar -czf "$archive_path" -C "$repo_root/dist" "$artifact_basename"
+
+(
+  cd "$repo_root/dist"
+  if command -v sha256sum >/dev/null 2>&1; then
+    sha256sum "$(basename "$archive_path")" > "$(basename "$checksum_path")"
+  else
+    shasum -a 256 "$(basename "$archive_path")" > "$(basename "$checksum_path")"
+  fi
+)