You spent three days writing a migration script for 4,900 vectors. Then you switched vector DBs. You did it again. Open any AI developer forum right now and you will find a specific kind of post. It goes like this: "I finally got my agent running beautifully on Qdrant. Now the client wants Pinecone. There's no standard format. Anyone done this migration before?" Forty replies. Twelve different scripts. Nine contradictory approaches. Someone posts a 200-line Python file they wrote at 2am that "mostly works." Someone else links to a Medium article from 2023 that references an API that no longer exists. The developer reads all of it. Then writes their own script anyway. This happens because every vector database speaks a different language. Pinecone's REST API looks nothing like Qdrant's. ChromaDB's Python client has no overlap with VEKTOR's SQLite schema. Weaviate wants HNSW parameters up front. pgvector lives inside Postgres.…