0.19.0

What's Changed

• fix: makefile gemini enterprise by @eliasecchig in #429
• feat: add adk a2a base template by @allen-stephen in #418
• fix: install a2a-sdk for cloud run load test by @allen-stephen in #430
• docs: add register-gemini-enterprise CLI documentation by @eliasecchig in #431
• fix: secret manager api by @eliasecchig in #433
• Fix agent engine artifacts bucket name format by @eliasecchig in #435
• fix: use deployment URL for ADK A2A agent card RPC endpoint by @eliasecchig in #434
• Add register-gemini-enterprise to CLI sidebar by @eliasecchig in #437
• refactor: use module execution for agent_engine_app by @eliasecchig in #436
• fix: makefile deploy logic ae by @eliasecchig in #438
• feat: bump version to 0.19.0 by @eliasecchig in #439

Full Changelog: 0.18.2...0.19.0