backstage release v3.38.0

(agent-platform) Delete an organization from its page by @QuentinBisson — People who manage an organization get Delete organization on its page: the dialog lists what is erased and kept and the running sessions, and erases once the organization’s name is typed. For one applied from git, it opens the pull request that removes it.
(agent-platform) Preselect the default agent; prefill the new-session prompt from ?prompt= by @Rotfuks — The new-session screen starts with the installation’s default agent selected, and a link with ?prompt= fills in the message without sending it, so an agent’s reply can hand you over to another agent with a prepared message.
(agent-platform) Accept {url, ref, path, readOnly} skill repositories by @Rotfuks — Skills from read-only sources, such as the platform’s own skills, are listed and can be added to agents, but have no Edit or Evaluate. For operators: agentPlatform.skills.repositories entries take url, ref, path and readOnly.

(agent-platform) Edit organization models and open the credential form in place by @fiunchinho — Edit model works again for an organization’s models, and Add model, Replace key and Replace credential open the portal’s credential form in the same tab instead of asking to open a page for agent-manager.
(agent-platform) Name each model’s owner when Models spans more than one by @Rotfuks — When Customize · Models lists models of the platform and of an organization together, each row names its owner, e.g. Owner: Platform, so two default models no longer look identical.
(agent-platform) Replace organization credentials with replace_organization_credential by @fiunchinho — Replace key and Replace credential on an organization’s page replace only the stored secret. A connector with several secrets offers one Replace for each, and an organization model’s provider can no longer be changed in Edit model.

Full Changelog: https://github.com/giantswarm/backstage/compare/v3.37.1...v3.38.0