Gemini CLI's Antigravity migration funnel reached stable

What this changes for operators

• Stable v0.47.0 carries the Antigravity migration funnel: a built-in antigravity-support skill that hands users a curl ... | bash install of a separate agy binary (#27765), plus a removed five-show cap on the 'Antigravity is coming to town' banner so it now shows every session for free- and unpaid-tier users (#27676). The clearest sign yet of a managed succession — shipped to stable in the same release that left the skill path-traversal security fix in preview.
• Operators should expect the migration prompt every session on free/unpaid tiers and treat the in-product curl | bash install of agy as a supply-chain decision, not a default to accept silently.