What it is
The /diff panel is now prototyped internally as a plugin pane rather than built-in UI
Not Anthropic's. This is the line from the earliest changelog entry here that named it, v2.1.273.
Presence across releases
0The miner has never read a build containing this name. It is here because a changelog entry of ours names it, which is evidence that it existed and not evidence of which releases carried it. The inventory starts at v2.1.138 and everything older than that was never mined.
First cited
0No release's published evidence quotes this name. The ledger indexes the Evidence lines of every changelog on this site, so this says nobody here has ever quoted it; it says nothing about how old the name is.
Gate readings
0No release here has a gate table behind it for this flag. Most published releases have none at all: the readings exist only for versions the pipeline captured flag state on.
Names beside it
Every feature flag in the inventory starting tengu_quiet, up to twelve of them.
tengu_quiet_harborNo description from anybody. v2.1.138
tengu_quiet_heronContinuing a server-side conversation thread can now skip resending the system prompt and tools list, with a fallback if the server disagrees v2.1.269
tengu_quiet_hollowNo description from anybody. never mined
tengu_quiet_lanternA new gate, tengu_quiet_lantern, controls whether the server classifier falls back to local when unsupported v2.1.278
tengu_quiet_slate_wrenNo description from anybody. v2.1.138
Read out of the published npm bundle release by release, and out of Anthropic's own documentation as this site captured it. Nothing on this page is a description anybody here wrote about what the feature flag does. All feature flags.