v0.2.0

0.2.0 - 2026-09-21

Breaking Changes

• Replaced the legacy message media projection with the unified attachment projection used by
  the active Platform contract.
• Added required capabilities and captureFreshness properties to conversation results and a
  required captureFreshness property to message-update results.
• Added current nudge, conversation avatar, target identity, and attachment descriptor variants
  to the exported result types.

Added

• Validated successful Platform responses at the HTTP boundary while tolerating unknown additive
  fields.
• Added the sanitized PlatformContractError with machine code invalid_platform_response.
• Surfaced Platform API deprecation and sunset metadata on stderr without contaminating CLI JSON or
  MCP protocol output.
• Added one release identity across the package, CLI, MCP server, Plugins, tags, and artifacts.
• Added curated changelog release notes and a stable-release compatibility gate against the current
  test Platform.

Migration

• Read message binary state from attachment instead of media.
• Handle the required conversation capabilities and capture freshness fields, including empty
  message-update pages.
• Consumers upgrading from 0.1.x must handle the result changes above.
• Consumers already using 0.2.0-rc.1 have no additional API migration steps.