Fixes #235

Fix

• Install each plugin from an isolated working directory so an ambient (legacy) root bower.json cannot inject its own dependencies into the install directory. This is the actual cause of adapt install places menu plugin in src/components/ when already installed in src/menu/ #235: a stale bower.json ("name": "manifest"), left over from the old grunt/bower toolchain and never removed, pinned adapt-contrib-boxMenu@7.1.0. Bower installed that manifest dependency into whichever type folder the requested plugin used (e.g. src/components when installing adapt-contrib-media), creating a duplicate copy of boxMenu.

Update

• Skip reinstalling plugins already at the resolved version (projectVersion === matchedVersion), and fetch installed-plugin info during install so that comparison is available. Reduces redundant reinstalls on a no-arg adapt install.

Testing

Setup

1. Start from a fresh framework project (e.g. 5.56.2) with the default plugins installed (run adapt install once), so adapt-contrib-boxMenu is present in src/menu/.
2. Add a legacy root bower.json at the project root:

{
    "name": "manifest",
    "dependencies": {
        "adapt-contrib-boxMenu": "7.1.0"
    }
}

Reproduce the bug (current published CLI / master)

3. Run adapt install adapt-contrib-media.
4. Observe: adapt-contrib-boxMenu@7.1.0 is duplicated into src/components/, alongside the correct copy still in src/menu/.

Verify the fix (this PR, issue/235)

5. Delete the duplicate src/components/adapt-contrib-boxMenu, leaving the root bower.json in place.
6. Run adapt install adapt-contrib-media again.
7. Confirm adapt-contrib-media installs to src/components/ and adapt-contrib-boxMenu is NOT duplicated there.
8. Run adapt install (no args) and confirm already-current plugins are skipped rather than reinstalled.