Module error 

DSFB-Debug: error types — additive, Copy, no-panic.

Every fallible operation in the crate returns Result<T, DsfbError> rather than panicking. The crate’s top-level lints (#![deny(clippy::unwrap_used)]) enforce this at compile time.

DsfbError is Copy + Clone + Debug + PartialEq + Eq — every variant is a stack-only enum, no heap allocation. Variants are additive across versions: existing variants are never removed or renumbered, so cross-version match arms remain valid.

Variant taxonomy

• DimensionMismatch / BufferTooSmall — caller-shape errors (operator passed wrong slice lengths or undersized output buffer)
• MissingRealData / HashMismatch — paper-lock integrity gates (sentinel fixture / SHA-256 drift)
• ParseError — adapter/fixture-format errors (invalid TSV, missing header, etc.)
• InvalidConfig — paper-lock config-construction errors

Operators reading these errors at runtime can map each variant to a specific corrective action; the crate documents the action in each variant’s per-variant doc-comment.

Enums

DsfbError

All errors the DSFB engine can produce. No heap allocation — all variants are Copy.

Type Aliases

Result