chore: add release.sh and update maintain.sh

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

maintain.sh

@@ -2,13 +2,10 @@
 
 set -euo pipefail
 
-# Ensure git hooks are active
-git config core.hooksPath .githooks
-
 uv sync --all-extras
 uv run uv-outdated
 uv run uv-secure --ignore-unfixed
 uv run ruff check --fix
 uv run ruff format
-uv run pytest
 uv run pyright
+uv run pytest -n auto

release.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+VERSION="${1:-}"
+
+if [[ -z "$VERSION" ]]; then
+    echo "Usage: ./release.sh <version>"
+    echo "Example: ./release.sh 0.4.0"
+    exit 1
+fi
+
+if ! [[ "$VERSION" =~ ^[1-9][0-9]*\.[0-9]+\.[0-9]+$|^0\.[0-9]+\.[0-9]+$ ]]; then
+    echo "Error: version must be in X.Y.Z format (e.g. 0.4.0)"
+    exit 1
+fi
+
+TAG="v$VERSION"
+
+BRANCH="$(git rev-parse --abbrev-ref HEAD)"
+if [[ "$BRANCH" != "main" ]]; then
+    echo "Error: releases must be made from the main branch (currently on $BRANCH)"
+    exit 1
+fi
+
+if git rev-parse "$TAG" >/dev/null 2>&1; then
+    echo "Error: tag $TAG already exists"
+    exit 1
+fi
+
+if [[ -n "$(git status --porcelain)" ]]; then
+    echo "Error: working tree is not clean. Commit or stash changes first."
+    exit 1
+fi
+
+echo "=== Releasing $TAG ==="
+
+echo "→ Running checks..."
+uv run ruff check
+uv run ruff format --check
+uv run pytest
+uv run pyright
+
+echo "→ Updating version to $VERSION..."
+# Portable sed -i: works on both macOS (BSD) and Linux (GNU)
+if sed --version >/dev/null 2>&1; then
+    # GNU sed
+    sed -i "s/^version = \".*\"/version = \"$VERSION\"/" pyproject.toml
+    sed -i "s/^__version__ = \".*\"/__version__ = \"$VERSION\"/" src/remove_ai_watermarks/__init__.py
+else
+    # BSD sed (macOS)
+    sed -i '' "s/^version = \".*\"/version = \"$VERSION\"/" pyproject.toml
+    sed -i '' "s/^__version__ = \".*\"/__version__ = \"$VERSION\"/" src/remove_ai_watermarks/__init__.py
+fi
+
+echo "→ Committing..."
+git add pyproject.toml src/remove_ai_watermarks/__init__.py
+git commit -m "chore: bump version to $VERSION"
+
+echo "→ Tagging $TAG..."
+git tag "$TAG"
+
+echo "→ Pushing..."
+git push origin main
+git push origin "$TAG"
+
+echo "=== Released $TAG ==="