Add explicit IIIF v2 prefixed types to resource set

[Copilot]

IIIF Presentation v2 resources use prefixed types (sc:Canvas, oa:Annotation) while v3 uses unprefixed forms (Canvas, Annotation). Without explicit support for v2 prefixed types, these resources were not being recognized and hydrated correctly.

Changes:

• Explicitly add IIIF v2 prefixed types to iiifResourceTypes set
• Add v2 Shared Canvas types: sc:collection, sc:canvas, sc:sequence, sc:range, sc:layer
• Keep existing v2 types: sc:manifest, oa:annotation, oa:annotationlist
• Add documentation clarifying v2 (prefixed) vs v3 (unprefixed) type differences
• Preserve prefixes to avoid ontology collisions (e.g., dcterms:Agent vs foaf:Agent)

Approach:

The _normalizeType method lowercases types while preserving prefixes. Both v2 and v3 types are explicitly listed in the iiifResourceTypes set:

_normalizeType('sc:Canvas')  // → 'sc:canvas'
_normalizeType('Canvas')     // → 'canvas'
// Both are in iiifResourceTypes set and recognized as IIIF resources
// v2 and v3 use different cache keys (as intended)

This approach avoids collisions between different ontologies while ensuring both IIIF v2 and v3 resources are properly recognized and hydrated.

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[cubap]

Not this. If we remove a lot of the prefixes we cannot tell what sort of data we have because of collisions between ontologies. Only add and equivocate when it is the same type of thing. You can look in http://iiif.io/api/presentation/2/context.json which holds most of hte new things we would need to add.

[Copilot]

Not this. If we remove a lot of the prefixes we cannot tell what sort of data we have because of collisions between ontologies. Only add and equivocate when it is the same type of thing. You can look ...

You're absolutely right. I've reverted the prefix-stripping approach and instead explicitly added the IIIF v2 prefixed types to the iiifResourceTypes set. This avoids ontology collisions while properly recognizing v2 resources like sc:Canvas, sc:Manifest, etc.

Changes in commit 261e85a:

• Reverted to original _normalizeType (lowercase only, no prefix stripping)
• Added v2 types: sc:collection, sc:canvas, sc:sequence, sc:range, sc:layer
• Added documentation clarifying v2 vs v3 differences
• No ontology collisions (e.g., dcterms:Agent ≠ foaf:Agent)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• iiif.io
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)