v2.1.0

What's Changed

• docs(examples/workflow): add per-example READMEs and a workflow index by @msampathkumar in #1113
• docs(contributing): document v1/v2 branch split by @wolo-lab in #1114
• ci: run Go workflow on main and v1 branches by @wolo-lab in #1117
• docs: update AGENTS.md repository layout for current packages by @karolpiotrowicz in #1118
• feat: add platform TaskRunner seam for caller-controlled tool fan-out by @DABH in #1050
• feat: add a name-based model registry (Register/NewLLM) by @DABH in #1057
• feat: expose the tool-declaration packer (PackTool) as a public API by @DABH in #1055
• test(runner): cover node-runtime behaviors by @wolo-lab in #1103
• fix: stable ordering of generated tool-confirmation requests by @DABH in #1053
• fix: update confirmation wrapper to propagate ProcessRequest calls to underlying tools and intercept packing registration by @hanorik in #1130
• feat(runner): add NewInMemory convenience constructor by @wolo-lab in #1133
• use t.Context() instead of context.Background() in tests by @wolo-lab in #1132
• fix: prevent mutation of input event during temporary state delta stripping by creating a shallow copy by @hanorik in #1128
• test(remotagent) deflake a2a cleanup propagation by @wolo-lab in #1131
• feat(agentregistry): add package foundation and REST transport by @wolo-lab in #1122
• feat(workflow): emit invoke_node spans for parallel worker items by @wolo-lab in #1134
• chore(deps): bump google.golang.org/genai from 1.57.0 to 1.63.0 by @dependabot[bot] in #1021
• chore(deps): bump golang.org/x/crypto to v0.52.0 by @wolo-lab in #1144
• test(remoteagent): de-flake TestCompat_A2ACleanupPropagation by @wolo-lab in #1145
• feat(agentregistry): add discovery methods for agents, MCP servers, e… by @wolo-lab in #1124
• AgentEngine deployment changes by @kdroste-google in #1162
• feat(agentregistry): add RemoteAgent and McpToolset factory helpers by @wolo-lab in #1127
• feat(auth): add core credential and provider package by @wolo-lab in #1143
• feat(mcptoolset): apply per-request auth via Config.Auth by @wolo-lab in #1148
• fix(parallelagent): await sub-agent teardown before returning on early stop by @wolo-lab in #1186
• feat: support multi-module Go development in CI and update developer documentation by @hanorik in #1155
• feat: Add BigQuery Agent Analytics Plugin by @vasilyl in #738
• OpenAI support by @hanorik in #1178 — building on the original contribution by @levigross in #242

New Contributors

• @msampathkumar made their first contribution in #1113
• @vasilyl made their first contribution in #738

Full Changelog: v2.0.0...v2.1.0