{"name":"tengu_cobalt_plinth_campion","slug":"tengu-cobalt-plinth-campion","family":"flag","title":"Feature flags","noun":"feature flag","description":"Publish checks could warn about page thumbnails, but the experiment is off.","description_source":"entry","described_by":{"version":"2.1.251","anchor":"thumbnail-checks-in-the-artifact-publish-preflight"},"presence":{"first_seen":"2.1.251","removed_in":null,"in_current_build":true,"newest_mined":"2.1.280","builds":23,"mined_builds":123,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.257","anchor":"artifact-publish-gains-a-live-document-thumbnail-skip-path","heading":"Artifact publish gains a 'live document' thumbnail-skip path","line":"Publishing a live artifact can skip thumbnail extraction, showing a dedicated note when the page declares one.","released_at":"2026-09-01 17:15:33","reason":"gate cited by this entry"},{"version":"2.1.251","anchor":"thumbnail-checks-in-the-artifact-publish-preflight","heading":"Thumbnail checks in the artifact publish preflight","line":"Publish checks could warn about page thumbnails, but the experiment is off.","released_at":"2026-08-28 15:34:26","reason":"gate cited by this entry, found in this entry's text"},{"version":"2.1.251","anchor":"artifact-publishing-can-attach-page-thumbnails-switched-off-","heading":"Artifact publishing can attach page thumbnails, switched off in this build","line":"Published pages could carry light and dark thumbnails, but the feature is off.","released_at":"2026-08-28 15:34:26","reason":"gate cited by this entry, found in this entry's text"}],"entries_total":3,"docs":[],"docs_total":0,"gates":[{"version":"2.1.257","state":"unknown","account":null,"baseline":null,"code_default":false},{"version":"2.1.251","state":"unknown","account":null,"baseline":null,"code_default":false}],"related":[{"name":"tengu_cobalt_plinth","slug":"tengu-cobalt-plinth","description":"PR review artifact pages can show a pinned button that approves the pull request from your GitHub account."},{"name":"tengu_cobalt_plinth_alder","slug":"tengu-cobalt-plinth-alder","description":"Claude can now read back a published artifact's contents; browsing, multi-file publishing and deletion are built but off."},{"name":"tengu_cobalt_plinth_aspen","slug":"tengu-cobalt-plinth-aspen","description":"The preview browser is locked to the local server and refuses to run if the lock fails."},{"name":"tengu_cobalt_plinth_bracken","slug":"tengu-cobalt-plinth-bracken","description":"You could start a private artifact from a published template, but two server switches keep it shut here."},{"name":"tengu_cobalt_plinth_bryony","slug":"tengu-cobalt-plinth-bryony","description":null},{"name":"tengu_cobalt_plinth_burnet","slug":"tengu-cobalt-plinth-burnet","description":"Artifact comment and subscription operations can each be switched on separately from the server."},{"name":"tengu_cobalt_plinth_comfrey","slug":"tengu-cobalt-plinth-comfrey","description":"A new flag affects relay routing when reading published artifact files."},{"name":"tengu_cobalt_plinth_damson","slug":"tengu-cobalt-plinth-damson","description":"The artifact tool's flat verbs are mapped to a canonical action shape, with a gate deciding which toolset is active."},{"name":"tengu_cobalt_plinth_dataviz","slug":"tengu-cobalt-plinth-dataviz","description":"The chart skill hint now only appears if the dataviz skill is actually installed."},{"name":"tengu_cobalt_plinth_direct","slug":"tengu-cobalt-plinth-direct","description":"Artifact availability now hinges on one gate, and direct upload kicks in for create paths."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-cobalt-plinth-campion","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}