llm-diff 0.1.0

Output diffing and versioning primitives for LLM outputs: semantic diff, version store, lineage tracking
Documentation 
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// SPDX-License-Identifier: MIT
use thiserror::Error;

/// All errors that can occur in the llm-diff library.
#[derive(Debug, Error)]
pub enum DiffError {
    /// A requested version ID was not found in the store.
    #[error("Version '{0}' not found in store")]
    VersionNotFound(String),
    /// A rollback target version has no accessible path.
    #[error("Cannot rollback to version '{0}': no path exists")]
    RollbackFailed(String),
    /// An output exceeded the configured token size limit.
    #[error("Output too large: {size} tokens exceeds limit {limit}")]
    OutputTooLarge { size: usize, limit: usize },
    /// JSON serialization or deserialization failed.
    #[error("Serialization error: {0}")]
    Serialization(#[from] serde_json::Error),
    /// A diff was structurally invalid.
    #[error("Invalid diff: {0}")]
    InvalidDiff(String),
    /// Two different versions mapped to the same content address.
    #[error("Content address collision for '{0}'")]
    ContentAddressCollision(String),
    /// A branch name was not found in the store.
    #[error("Branch '{0}' not found")]
    BranchNotFound(String),
}