Store origin URI when exchanging

[fbacall]

Summary of changes

• Adds an origin_uri to events and materials, which should point back to the URI of the resource on the original instance it was exchanged from.
• Displays notice and link back to origin instance when viewing an event/material.
• Adds a <description> to the OAI-PMH identify response to indicate that this is a TeSS instance.
• Populates origin_uri when ingesting via OAI-PMH from a TeSS instance.
• Changed OAI-PMH tests to use mocked HTTP responses vs. mocked client.

Motivation and context

Needed a way to credit origin instance for exchanged content, since metadata may be stale/incomplete.

Screenshots

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

Adds first-class “origin instance” attribution for exchanged Events/Materials by persisting an origin_uri, surfacing it in the UI, and enriching OAI-PMH identify/ingestion so TeSS instances can be detected and credited.

Changes:

• Adds origin_uri to events and materials, displays “Original entry” UI, and shows an exchange icon in listings.
• Extends OAI-PMH provider Identify response to mark the instance as TeSS, and updates the OAI-PMH ingestor to populate origin_uri when ingesting from a TeSS instance.
• Refactors OAI-PMH tests to use WebMock/VCR-recorded HTTP responses instead of a mocked OAI client.

Reviewed changes

Copilot reviewed 22 out of 22 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
test/vcr_cassettes/ingestors/tess_oai_pmh_listrecords.yml	Adds recorded TeSS ListRecords response fixture for replayable ingestion testing.
test/vcr_cassettes/ingestors/tess_oai_pmh_identify.yml	Adds recorded TeSS Identify response fixture including the TeSS marker description.
test/unit/ingestors/oai_pmh_ingestor_test.rb	Switches OAI-PMH tests to HTTP stubs/VCR and adds coverage for origin_uri population.
test/controllers/materials_controller_test.rb	Verifies origin-info link is conditionally displayed on material show page.
test/controllers/events_controller_test.rb	Verifies origin-info link is conditionally displayed on event show page.
lib/ingestors/oai_pmh_ingestor.rb	Detects TeSS instances via Identify and injects origin_uri during RDF ingestion.
lib/ingestors/material_ingestion.rb	Simplifies material ingestion param extraction.
lib/ingestors/event_ingestion.rb	Simplifies event ingestion param extraction.
db/schema.rb	Updates schema to include origin_uri columns.
db/migrate/20260710154329_add_origin_uri_to_tables.rb	Adds origin_uri columns to materials and events.
config/locales/en.yml	Adds i18n strings for origin attribution UI.
config/initializers/oai_provider.rb	Adds TeSS marker Identify description and customizes OAI identifiers to include route keys.
app/views/materials/show.html.erb	Renders shared origin-info block on material pages.
app/views/materials/_material.html.erb	Displays exchange icon for exchanged materials in lists/cards.
app/views/events/show.html.erb	Renders shared origin-info block on event pages.
app/views/events/_event.html.erb	Displays exchange icon for exchanged events in lists/cards.
app/views/common/_origin_info.erb	New shared sidebar block that links to the origin instance entry.
app/models/application_record.rb	Adds a default oai_identifier used by OAI-PMH provider identifier rendering.
app/helpers/application_helper.rb	Adds exchanged icon type and helper to render the exchange icon.
app/controllers/materials_controller.rb	Permits origin_uri in strong params for materials.
app/controllers/events_controller.rb	Permits origin_uri in strong params for events.
app/assets/stylesheets/application.scss	Styles the exchange icon.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[eilmiv]

Looks great.

[eilmiv]

Suggested change

	<tess-instance xmlns="http://tess.elixir-europe.org/xmlns" />
	<tess-instance xmlns="http://tesshub.org/xmlns" />

Of course, it does not matter, but given that this domain exists I think it is cooler in this case.