v0.4.5

What's new?

Fixed

• Demo app: the theme toggle now controls the whole page. The demo previously wrapped its content in a second, uncontrolled ThemeRoot (from ui-components, defaultTheme="system") that followed the OS independently of the header toggle, leaking dark tokens (e.g. --sidebar) into the light .a2a-root and leaving the sidebar dark in light mode. Removed the redundant wrapper so a single, toggle-synced theme root governs the app. (Demo only — the published library was unaffected.)
• Outbound v0.3 message parts now always include the required kind discriminator ("text", "file", "data"). buildOutboundParts previously passed v0.3 parts through unchanged, so messages sent to v0.3 agents omitted kind (e.g. { "text": "Hello" }), breaking agents that use it as a discriminator. The legacy type field is also dropped, since it is superseded by kind in the v0.3 wire format.
• SSE streaming: non-terminal task envelopes (e.g. submitted) no longer close the stream prematurely. The chat store now keeps the stream open until a terminal state (completed, failed, canceled, rejected) is received, preventing blank or dropped responses from agents that send an initial task object before artifact-update / status-update events.

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What's Changed

• feat: improve light mode on dev server by @jurijat in #97
• fix: required kind field by @jurijat in #96
• feat: add terminal task state fix by @jurijat in #93
• chore: format and fix local mock agent by @jurijat in #25
• chore(deps): update all minor updates in #76
• chore(deps): update github actions (major) in #71
• chore(deps): update ui components in #72
• chore(deps): update github actions in #69
• chore(deps): update dev toolchain in #68
• fix(deps): pin dependency react-markdown to 10.1.0 in #67
• fix(deps): pin dependencies in #66
• chore(deps): pin dependencies in #65

Full Changelog: v0.4.4...v0.4.5