Pre-migration survey for engine-slop residuals Area A. Catalogues every
MagnotiaError::StorageError construction site in the storage crate
(78 total across database.rs and migrations.rs), groups by failure
mode, proposes a typed magnotia_storage::Error enum with a serde-
friendly MagnotiaError::Storage { kind, operation, detail } variant on
top, and flags 6 ambiguities + 3 migration risk classes.
Key findings the residuals plan did not capture:
- StorageError is a String variant on MagnotiaError, not a separate
enum — there is nothing called StorageError in the storage crate.
- Actual site count is 78, not the ~25 the residuals plan estimated.
- Tauri commands stringify every error before crossing into the
frontend (Result<T, String>), so MagnotiaError's Serialize impl is
presently unused at the FE/BE boundary. Area E owns that fix.
- Zero Other(String) sites in storage — already cleaned in db654de.
No code changes. Migration awaits decisions on the 6 ambiguous cases
in §"Ambiguous cases / decisions needed".
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Jake
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