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Renn F
996ef56ac3
The in-house RAG engine (which replaced piragi) reads/writes a `content` column and a `created_at` column on every chunks_<index_type> table and provisions them at runtime via CREATE TABLE IF NOT EXISTS. On databases that already carried the piragi-era tables (column `text`, no `created_at`) that DDL is a silent no-op, so the engine never reshapes them and every ingest/search/list fails with `column "content" ... does not exist`. Migration 030 ALTERs each existing chunk table in place — renames text -> content and adds created_at — preserving the non-rebuildable agent knowledge (journals, decisions, errors, learnings, reviews, conversations) that a docs reindex cannot regenerate. It guards on actual column presence, so it is idempotent and safe on piragi-shaped, already-correct, or absent tables (e.g. chunks_code). Adds a guard test pinning the migration's table list to the IndexType enum so a new index type cannot silently escape the schema alignment.