Document Kolibri's optional plugins in the user manual

[indirectlylit]

Overview

Add a user-manual page cataloguing Kolibri's optional plugins — the ones that ship as separate PyPI wheels rather than in core.

Context

• The optional plugins now live in-tree in the Kolibri monorepo at python_packages/ and publish as independent PyPI wheels: kolibri-sentry-plugin, kolibri-oidc-client-plugin, kolibri-oidc-provider-plugin, kolibri-opensearch-plugin, kolibri-sync-extras-plugin.
• context_translation (Extract the context_translation plugin into python_packages kolibri#14975) and demo_server (Extract the demo_server plugin into python_packages kolibri#14976) are being extracted into python_packages/ too.
• Kolibri's developer docs cover the contributor view — adding and publishing a member package, and the plugin mechanism itself.
• No page tells an admin which optional plugins exist, or how to install and enable one.
• This supersedes the original 2020 framing, which assumed the plugins lived in separate repositories.
• The migration moved their source in-tree.

The Change

• Add an "Optional plugins" page to the user manual.
• List each optional plugin with a one-line description of what it does.
• Give the install command for each (pip install kolibri-<name>-plugin).
• Give the enable step for each (via kolibri plugin enable).
• Note each plugin's configuration, or state that it needs none.
• Point to the plugin's python_packages/ source directory.
• Cross-link the page from Kolibri's developer docs.

Out of Scope

• The platform installers (server, debian, pi, app, gnome, android) — covered by their own migration issues and existing install docs.
• The contributor "how to add a member package" flow — already in the developer docs.
• Third-party or community plugins outside python_packages/.
• In-platform plugin discovery/management — a separate future feature.

Acceptance Criteria

• A user-manual page lists every python_packages/ optional plugin with a one-line description.
• Each entry gives the install command.
• Each entry gives the enable step.
• Each entry states its configuration, or that it needs none.
• Each entry links to its python_packages/ source directory.
• Kolibri's developer docs link to the new page.

References

• Original example of hidden plugin functionality: Removed OIDC provider plugin kolibri#7083
• Monorepo tracking issue: Kolibri Monorepo kolibri#13720

AI usage

Rewrote this 2020 issue with Claude Code to reflect the monorepo migration. Claude checked Kolibri's existing docs to confirm the catalogue gap.