What's Changed

Changelog for v0.50.0-preview.1 by @gemini-cli-robot in #28150
Fix no_proxy test by @jerrylin3321 in #28131
chore(release): bump version to 0.51.0-nightly.20260625.g3fbf93e26 by @gemini-cli-robot in #28151
Vertex base url update by @DavidAPierce in #28145
fix(security): enforce case-insensitive sensitive path blocklist and vscode...