Allow direct access to Bioschemas JSON-LD

[fbacall]

Summary of changes

• Adds a jsonld format to events/materials which returns the Bioschemas JSON-LD that would be embedded on the page.

Motivation and context

Allows direct access to the JSON-LD without having to parse the HTML.

Checklist

• I have read and followed the CONTRIBUTING guide.
• I confirm that I have the authority necessary to make this contribution on behalf of its copyright owner and agree
  to license it to the TeSS codebase under the
  BSD license.

[Copilot]

Pull request overview

This PR adds direct access to Bioschemas JSON-LD data for events and materials by introducing a new jsonld format endpoint. This allows consumers to retrieve the structured data without parsing HTML, making it easier to integrate with external systems and tools.

Key changes:

• Registers application/ld+json MIME type for the new :jsonld format
• Adds JSON-LD response handlers to events and materials controllers
• Improves Bioschemas generator by using compact_blank to remove empty address fields and implementing provider deduplication

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
config/initializers/mime_types.rb	Registers application/ld+json MIME type with alias for Schema.org JSON-LD
app/controllers/events_controller.rb	Adds jsonld format response that renders Bioschemas JSON directly
app/controllers/materials_controller.rb	Adds jsonld format response that renders Bioschemas JSON directly
lib/bioschemas/generator.rb	Replaces compact with compact_blank to remove empty strings; reorders and deduplicates provider list
test/controllers/events_controller_test.rb	Adds test coverage for JSON-LD endpoint, verifying response structure and content
test/controllers/materials_controller_test.rb	Adds test coverage for JSON-LD endpoint, verifying response structure and content
test/models/event_test.rb	Adds tests for blank address field removal and provider deduplication in Bioschemas output

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[Copilot]

[nitpick] Consider using render json: @bioschemas.first.generate instead of render plain: @bioschemas.first.to_json. This would allow Rails to handle JSON serialization consistently and automatically set proper headers. The generate method returns a hash which Rails can serialize, avoiding the need for manual to_json conversion and plain rendering.

Suggested change

	format.jsonld { render plain: @bioschemas.first.to_json }
	format.jsonld { render json: @bioschemas.first.generate }

[fbacall]

I used to_json because it pretty generates it with nice formatting.

[Copilot]

[nitpick] Consider using render json: @bioschemas.first.generate instead of render plain: @bioschemas.first.to_json. This would allow Rails to handle JSON serialization consistently and automatically set proper headers. The generate method returns a hash which Rails can serialize, avoiding the need for manual to_json conversion and plain rendering.

Suggested change

	format.jsonld { render plain: @bioschemas.first.to_json }
	format.jsonld { render json: @bioschemas.first.generate }