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2026-03-01T09-29-20_auto_memory/memories.db-wal, memory/2026-03-01-umap-pro

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Nicholai Vogel 2026-03-01 02:29:20 -07:00
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# 2026-03-01 Session Notes
## UMAP Projection Database Schema Bug
Investigated a critical UMAP projection failure in the signetai daemon deployed on macOS. The error was a SQLiteError indicating the query referenced a non-existent column `e.vector` in the embeddings table schema. The issue occurred in the `computeProjection` function within `packages/daemon/src/umap-projection.ts` when processing embeddings for the memory projection visualization.
The debugging approach involved:
1. Grepping for `e.vector` references across the codebase (found 6 files)
2. Grepping for `computeProjection` function (found 2 files: daemon.ts and umap-projection.ts)
3. Beginning source code inspection of the problematic UMAP projection module
The root cause appeared to be a schema mismatch between the query being executed and the actual database schema, likely a migration gap or column naming inconsistency. Investigation was ongoing at session end.

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