Key System and Cross-References

Document Identification

Each document is identified by a Key - a path-based identifier:

pub struct Key {
    pub relative_path: Arc<String>,  // e.g., "folder/document"
}

Key features:

• Path-based: Hierarchical organization support
• Reference counting: Arc enables efficient cloning
• Extension handling: Automatic .md extension management
• Relative linking: Support for ../parent/document syntax

Reference Types

IWE supports three reference types:

1. Regular markdown links: [text](document.md)
2. Wiki-style links: [[document]]
3. Piped wiki links: [[document|display text]]

Each reference type is preserved and can be normalized or converted as needed.