chat@4.40.0

Minor Changes

• 4a0b5c0: Add tooltip to Button and LinkButton, and a width hint to Card. The Teams adapter and the @chat-adapter/teams/cards subpath render them as the Adaptive Card action tooltip and the msteams full-width card property; other adapters ignore them. Emitted Adaptive Cards now declare schema version 1.5, which is the version that introduced action tooltips. Buttons with a callbackUrl keep their tooltip and other fields when the URL is swapped for a callback token.

Patch Changes

• f485255: Harden webhook tenant isolation, require explicit Google Chat bot identity for reliable mention handling, use native Google Chat pagination, isolate Slack caches, and bound recording storage.
• b7c9316: Tighten AI tool and queued-message scoping, isolate direct-message conversations, preserve ephemeral follow-ups, consume callback tokens once, and mark external link metadata as untrusted.