Release v0.48.0-nightly.20260613.g9e5599c32

What's Changed

• fix(core): implement atomic update in MCP tool discovery by @luisfelipe-alt in #27619
• Vertex ai model mapping fix by @DavidAPierce in #27749
• Add documentation and migration commands for Antigravity CLI by @DavidAPierce in #27765
• Avoid persisting empty resume sessions by @SandyTao520 in #27770
• chore(release): bump version to 0.48.0-nightly.20260609.g3a13b8eeb by @gemini-cli-robot in #27779
• ci(dependabot): enable cooldown period for npm packages by @ruomengz in #27743
• refactor(core): standardize tool output formatting by @galz10 in #27772
• ci: update workflow logging and policy configurations by @galz10 in #27853
• fix(core): Ensure zero-quota limits fail fast to prevent retry loop hang by @luisfelipe-alt in #27698
• fix(core): handle multi-line escaped quotes in stripShellWrapper by @sanchezcoraspe in #27467

New Contributors

• @luisfelipe-alt made their first contribution in #27619
• @sanchezcoraspe made their first contribution in #27467

Full Changelog: v0.47.0-nightly.20260609.g0567b25a2...v0.48.0-nightly.20260613.g9e5599c32