[brianvarskonst]

Replaced by #24 after renaming the source branch to feat/change-plugin-slug. The source commit is unchanged.

The old nginx-cache slug can make WordPress offer an update from the unrelated WordPress.org plugin. Use ns-nginx-cache/ns-nginx-cache.php, display NS Nginx Cache, and declare the GitHub repository as the plugin's Update URI so WordPress.org excludes it from update responses while active or inactive. This uses WordPress's documented third-party update protection.

Align Composer's install name and kernel entry, release archive names/folders, PHPCS input, compiled settings-link hook, stylesheet URLs, and version lookups with the new entry. The Composer package remains sympress/nginx-cache; existing settings, queues, tables, cron hooks, REST routes, translation domain, and CLI commands keep their identifiers. Updates continue through Composer or release archives.

Existing installations: follow docs/migration.md to deactivate the old SymPress installation, switch the directory/entry, reactivate with the previous site/network scope, and refresh cached update notices. Keep old files outside the plugins directory; using Delete can invoke the existing delete-on-uninstall setting.

Validation:

• composer validate --strict and composer qa: pass; 102 unit tests / 510 assertions.
• Real WordPress 7.1.2 + MariaDB: 236 integration assertions; Multisite: 103 assertions. New checks exercise discovery, active/inactive update requests, unrelated updates, compiled settings links, archive metadata, stylesheet URLs, and Site Health version lookup. Harness HTTP is intercepted.
• Direct WordPress.org API comparison with disposable inactive plugin metadata: the unguarded old slug was offered the unrelated nginx-cache 1.0.8 update; guarded old and new slugs received no update.
• Hosted QA passed all eight jobs, including MariaDB/MySQL, Nginx and Redis. Archive build and archive check also passed, all on 4f92a2c9ea2db7271d6c49af101a4c63b6de65f4.
• Downloaded archive inspection: exactly one ns-nginx-cache/ root, matching ns-nginx-cache.php, correct source SHA and Composer metadata, 2,468 verified checksums, 41 production dependencies and no installed development packages.