Tool registry discovery now available

What's Changed

• fix/verify release npm ci ignore scripts by @rmedranollamas in https://github.com/google-gemini/gemini-cli/pull/28116
• fix(ci): prevent workspace binary shadowing in release verification by @galdawave in https://github.com/google-gemini/gemini-cli/pull/28132
• Feat/tool registry discovery by @ved015 in https://github.com/google-gemini/gemini-cli/pull/28113
• fix(ci): prevent bad NPM releases and promote job crashes by @galdawave in https://github.com/google-gemini/gemini-cli/pull/28147

Full Changelog: https://github.com/google-gemini/gemini-cli/compare/v0.49.0...v0.50.0