feat: scope the package as @webship/diffy-steps at 2.0.0 (#1)

[Natshah]

Scopes the package and moves it onto the 2.0.x line.

- "name": "diffy-steps",
- "version": "0.1.0",
+ "name": "@webship/diffy-steps",
+ "version": "2.0.0",

Closes #1

Why 2.0.0

The plugin peers against webship-js ^2.0.4, its branch is 2.0.x, and its step
phrasings are the 2.0.x phrasings extracted from webship-js. 0.1.0 implied a
pre-release with no compatibility promise and put the plugin on a version track
unrelated to the harness it plugs into.

One addition beyond the rename

"publishConfig": { "access": "public" }

Scoped packages publish as restricted by default. Without this, npm publish
would either fail or publish privately — contradicting the now-public
repository. Flagging it because it was not in the request but the rename is
incomplete without it.

Everything that follows the name

File	Updated
README.md	heading, prose, install command, require: path
docs/README.md	heading, intro
tests/step-definitions/README.md	install, require: path, cp snippet, uninstall snippet
tests/step-definitions/diffy.steps.js	header comment
package-lock.json	regenerated

The consumer require: path becomes:

'node_modules/@webship/diffy-steps/tests/step-definitions/**/*.js'

GitHub URLs (github.com/webship/diffy-steps) and the directory name are
unchanged — only the npm package identity moved.

Before publishing — two prerequisites outside this repo

• The webship org must exist on npmjs.com. https://registry.npmjs.org/-/org/webship returns 404 today, and npm publish will fail on a scope with no org behind it.
• The publishing account must be a member of that org with publish rights.

Still unpublished, as intended.

Test notes

• npm pack --dry-run → @webship/diffy-steps@2.0.0, filename webship-diffy-steps-2.0.0.tgz, same 5-file payload.
• package.json re-parsed through Node after editing — valid, key order preserved, non-ASCII intact.
• Suite re-run after the change: 6 scenarios / 37 steps passing against the mock Diffy API.

One knock-on outside this repository: webship-js PR
#303 documents the unscoped
node_modules/diffy-steps/... path. It needs the scoped path before it merges —
handled separately so this PR stays single-purpose.

AI-Generated: Yes (applied the rename and version bump and updated every
reference; reviewed by Rajab Natshah.)

Checkpoints

• File an issue about this project
• Addition/Change/Update/Fix to this project
• Testing to ensure no regression
• Automated unit/functional testing coverage
• Developer Documentation support on feature change/addition
• User Guide Documentation support on feature change/addition
• Accessibility and Readability
• Reviewed by a human
• Code review by maintainers
• Full testing and approval
• Credit contributors
• Review with the product owner
• Update Release Notes
• Release