docs(components): align package scopes with published npm names (#645)

Audit every first-party package reference against npm and update the
docs to the name actually published, plus point repository links at the
repos' current HarperFast org locations.

- @harperfast/vite-plugin is deprecated ("Renamed to @harperfast/vite");
  the Known Custom Components entry now lists @harperfast/vite.
- The Next.js plugin reference in the Harper Applications in Depth guide
  now uses @harperfast/nextjs (2.x) instead of the legacy
  @harperdb/nextjs (1.x).
- apollo, astro, status-check, prometheus-exporter, and acl-connect stay
  on @HarperDB, which is the only scope each is published under.
- Add a one-line note under Known Custom Components explaining why both
  scopes appear, so readers seeing both are not confused.

Closes #503

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

Author: Ethan-Arrowood

learn/developers/harper-applications-in-depth.mdx

@@ -50,7 +50,7 @@ Beyond the component system, Harper also includes some other important subsystem
 
 ### Component Classification: Built-in vs Custom
 
-Harper further classifies components (plugins and applications) as either built-in or custom. **Built-in** components are internal to Harper, require no additional installation steps, and are immediately accessible for use. The `graphqlSchema` and `rest` plugins are great examples of built-in plugins. **Custom** components are external to Harper, generally available as an npm package or git repository, and do require additional installation steps in order to be used. Custom components can be authored by anyone, including Harper. Any of Harper's official custom components are published using the `@harperdb` and `@harperfast` package scopes, such as the [`@harperdb/nextjs`](https://github.com/HarperDB/nextjs) plugin for developing Next.js applications or the [`@harperdb/status-check`](https://github.com/HarperDB/status-check) application.
+Harper further classifies components (plugins and applications) as either built-in or custom. **Built-in** components are internal to Harper, require no additional installation steps, and are immediately accessible for use. The `graphqlSchema` and `rest` plugins are great examples of built-in plugins. **Custom** components are external to Harper, generally available as an npm package or git repository, and do require additional installation steps in order to be used. Custom components can be authored by anyone, including Harper. Any of Harper's official custom components are published using the `@harperdb` and `@harperfast` package scopes, such as the [`@harperfast/nextjs`](https://github.com/HarperFast/nextjs) plugin for developing Next.js applications or the [`@harperdb/status-check`](https://github.com/HarperFast/status-check) application.
 
 Harper's reference documentation contains detailed documentation for all [built-in components](/reference/v5/components/overview#built-in-extensions-reference). Custom components are documented within their respective repositories.
 

reference/components/overview.md

@@ -136,16 +136,18 @@ Extensions require an `extensionModule` option pointing to the extension source.
 
 ## Known Custom Components
 
+Harper's official components are published under two npm scopes — `@harperfast` for packages already migrated as part of the HarperDB to HarperFast transition, and `@harperdb` for those still on the original scope — so install each one using exactly the name listed below.
+
 ### Applications
 
-- [`@harperdb/status-check`](https://github.com/HarperDB/status-check)
-- [`@harperdb/prometheus-exporter`](https://github.com/HarperDB/prometheus-exporter)
-- [`@harperdb/acl-connect`](https://github.com/HarperDB/acl-connect)
+- [`@harperdb/status-check`](https://github.com/HarperFast/status-check)
+- [`@harperdb/prometheus-exporter`](https://github.com/HarperFast/prometheus-exporter)
+- [`@harperdb/acl-connect`](https://github.com/HarperFast/acl-connect)
 
 ### Plugins
 
 - [`@harperfast/nextjs`](https://github.com/HarperFast/nextjs) — Run a Next.js application on Harper ([docs](./nextjs.md))
-- [`@harperfast/vite-plugin`](https://github.com/HarperFast/vite-plugin) — Develop and serve Vite-built front-ends from Harper, with HMR via `harper run`
+- [`@harperfast/vite`](https://github.com/HarperFast/vite) — Develop and serve Vite-built front-ends from Harper, with HMR via `harper run`
 
 ### Extensions