{"name":"tengu_cobalt_thistle","slug":"tengu-cobalt-thistle","family":"flag","title":"Feature flags","noun":"feature flag","description":"Artifact syntax highlighting and mermaid diagrams are now always on; three other gates were renamed and stay off.","description_source":"entry","described_by":{"version":"2.1.239","anchor":"three-feature-gates-renamed-three-retired"},"presence":{"first_seen":"2.1.211","removed_in":"2.1.239","in_current_build":false,"newest_mined":"2.1.309","builds":27,"mined_builds":150,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.239","anchor":"three-feature-gates-renamed-three-retired","heading":"Three feature gates renamed, three retired","line":"Artifact syntax highlighting and mermaid diagrams are now always on; three other gates were renamed and stay off.","released_at":"2026-08-21 17:18:54","reason":"gate cited by this entry, found in this entry's text"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[{"version":"2.1.239","state":"off","account":false,"baseline":false,"code_default":null}],"related":[{"name":"tengu_cobalt_awning","slug":"tengu-cobalt-awning","description":"Remote sessions gain bookkeeping for the time of the last full sign-in check before model requests, off unless a server value is set"},{"name":"tengu_cobalt_compass","slug":"tengu-cobalt-compass","description":null},{"name":"tengu_cobalt_frost","slug":"tengu-cobalt-frost","description":null},{"name":"tengu_cobalt_harbor","slug":"tengu-cobalt-harbor","description":"Whether remote control auto-started, and why, is now recorded."},{"name":"tengu_cobalt_harbor_notice","slug":"tengu-cobalt-harbor-notice","description":"A resume-precheck gate is now passed to the VS Code extension, on by default."},{"name":"tengu_cobalt_heron","slug":"tengu-cobalt-heron","description":"Default `false`. Makes the context tip `opus-on-pro-near-limit` eligible: on a Pro plan, with an Opus model, after more than half of the usage limit is used, the tip suggests `\/model` and says Sonnet 5 uses the weekly limit more slowly than Opus."},{"name":"tengu_cobalt_lantern","slug":"tengu-cobalt-lantern","description":"Quick web setup stays off, now behind a named helper needing a flag and two entitlements."},{"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."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-cobalt-thistle","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}