adk_dart 2026.2.28 changelog

2026.2.28 #

Switched package versioning scheme to date-based YYYY.M.D.
Expanded adk web / adk api_server parity surface with bundled /dev-ui serving and broader API route compatibility.
Hardened MCP transport/session behavior through adk_mcp integration updates and related tests.
Added runtime gap audit document for remaining non-functional/default-unwired features.

Expanded Python parity coverage across evaluator workflows and remote code executor paths.
Added parity ports for model contracts and toolset stacks, including Google API, Pub/Sub, and OpenAPI integrations.
Added Spanner, Bigtable, and BigQuery client/toolset parity layers with vector store and metadata/query support.
Added session schema/migration utilities and missing shared utility modules.

Bootstrap adk_dart package as an ADK core runtime port (based on ref/adk-python).
Added core agent/session/event/tool/model abstractions and execution flow.
Added Runner / InMemoryRunner with async invocation path.
Added function-call orchestration in LLM flow.
Added baseline tests for event behavior, session service, and runner flow.