Seshat Scanner

Parses source code files into intermediate representation (IR) using Tree-sitter grammars. Produces [seshat_core::ProjectFile] structs consumed by convention detectors.

Responsibilities:

• File discovery with .gitignore respect (via ignore crate)
• Tree-sitter AST parsing for Rust, TypeScript, JavaScript, Python
• Dependency manifest analysis (Cargo.toml, package.json, pyproject.toml)
• Documentation ingestion (Markdown, JSON schema, OpenAPI)
• Content hashing (SHA256) for incremental change detection