[breaking] Google schedules gemini-embedding-001 shutdown for July 14, 2026

The Gemini deprecations schedule lists gemini-embedding-001 (released July 14, 2025) for earliest shutdown July 14, 2026, replaced by gemini-embedding-2. The changelog carries no dated announcement; announced_at reflects the date this was captured from the schedule. Effective: 2026-07-14. Migration target: google/gemini-embedding-2. Affected: google/gemini-embedding-001. Severity: breaking. Verification: verified.