nit(release) document release process and remove broken release script

doc/RELEASE.md

@@ -0,0 +1,44 @@
+# Release Process
+
+Releases are automated via [release-it](https://github.com/release-it/release-it) running in GitHub Actions. The workflow bumps `package.json`, updates `doc/CHANGELOG.md`, creates a bare semver git tag, and publishes to npm with OIDC provenance. The tag push triggers a separate workflow that builds ncc binaries for three platforms and creates the GitHub Release.
+
+## Cutting a release
+
+### From the CLI
+
+```bash
+gh workflow run release.yml --repo indexzero/flatlock -f increment=minor
+```
+
+Replace `minor` with `patch` or `major` as appropriate.
+
+### From the GitHub UI
+
+1. Go to **Actions > Release > Run workflow**
+2. Select the increment type (patch, minor, or major)
+3. Click **Run workflow**
+
+## What happens
+
+1. `release-it --ci --increment <type>` runs on `ubuntu-latest`
+2. Determines the new version from the latest git tag + increment
+3. Moves `[Unreleased]` content in `doc/CHANGELOG.md` into a versioned section
+4. Bumps `version` in `package.json`
+5. Commits `chore: release <version>`, tags with bare semver (e.g. `1.6.0`)
+6. Publishes to npm (triggers `prepublishOnly` → `build:types` automatically)
+7. Pushes commit and tag to `main`
+8. Tag push triggers `ncc-release.yaml` which builds binaries (linux-x64, linux-arm64, darwin-arm64) and creates the GitHub Release with assets
+
+## npm authentication
+
+npm publishing uses [Trusted Publishers](https://docs.npmjs.com/trusted-publishers/) (OIDC) — the `Release` workflow in `indexzero/flatlock` is linked as a trusted publisher for the `flatlock` package. No `NPM_TOKEN` secret is needed.
+
+## Changelog
+
+The `@release-it/keep-a-changelog` plugin manages `doc/CHANGELOG.md`. When writing changes, add entries under the `## [Unreleased]` heading. The plugin converts this to a versioned heading at release time.
+
+## Configuration
+
+- `.release-it.json` — release-it config (tag format, changelog path, npm settings)
+- `.github/workflows/release.yml` — release workflow (workflow_dispatch)
+- `.github/workflows/ncc-release.yaml` — binary build workflow (tag-triggered)

package.json

@@ -61,8 +61,7 @@
     "check": "biome check src test && pnpm run build:types",
     "check:fix": "biome check --write src test",
     "build:ncc": "./bin/ncc.sh",
-    "prepublishOnly": "pnpm run build:types",
-    "release": "gh workflow run release.yml --repo indexzero/flatlock -f increment="
+    "prepublishOnly": "pnpm run build:types"
   },
   "dependencies": {
     "@yarnpkg/lockfile": "^1.1.0",