v1.9.0

What's Changed

• fix(session/database): backport state write fixes (#1551, #1743) by @wolo-lab in #1830
• fix(artifact): backport keeping session filenames out of shared listings (#1673, #1708, #1767) by @wolo-lab in #1831
• fix: backport session, artifact and memory fixes (#1575, #1729, #1565, #1756) by @wolo-lab in #1832
• fix: backport live runner fixes (#1547, #1603, #1795) by @wolo-lab in #1833
• docs: backport doc comment fixes (#1721, #1745, #1761) by @wolo-lab in #1835
• fix: backport agent and tool fixes (#1709, #1509, #1493, #1803) by @wolo-lab in #1836
• fix(llminternal): backport request assembly and streaming fixes (#1566, #785, #1719, #1804, #1802) by @wolo-lab in #1837
• fix(workflowagents): backport loop and sequential agent fixes (#1722, #1684, #1780) by @wolo-lab in #1838
• fix(model/gemini): backport preserving empty text on thought-signature parts (#1639) by @wolo-lab in #1839
• fix(mcptoolset): backport connection and session lifecycle fixes (#1687, #1713, #1717, #1779) by @wolo-lab in #1840
• fix(launcher): backport Host and Origin checks on every web launcher route (#1641, #1505) by @wolo-lab in #1841
• fix(adkrest): backport REST server fixes (#1686, #1724, #1648) by @wolo-lab in #1842
• chore(deps): bump google.golang.org/grpc to v1.83.2 by @wolo-lab in #1843
• chore(version): bump the tagged version constant to 1.9.0 by @wolo-lab in #1845
• test(llminternal): count fake live connections before the upgrade by @wolo-lab in #1847
• fix(runner): backport preserving BeforeRun plugin responses (#1598) by @wolo-lab in #1834

Full Changelog: v1.8.0...v1.9.0