Module code 

Code structure graph — code.graph, code.query, code.affected_by, fragment.search.

Port of the v26 CodeStructureGraph surface: scan a project, extract symbols (functions, classes, methods, imports) and edges (calls, imports, inheritance), then answer structural questions:

• code.graph — build (or refresh) the graph for a project root
• code.query — natural-language queries: “what calls X”, “what does X call”, “path from A to B”, “explain X”, “god nodes”, “search X”
• code.affected_by — everything transitively affected by changing a symbol (reverse call-graph BFS)
• fragment.search — locate the file/line fragments mentioning a query

Extraction is regex-based per language (no parser dependency), bounded by file count and file size, and the graph is shared across calls so a single code.graph build serves many queries.

Structs

CodeAffectedByTool

code.affected_by — find symbols affected by a change.

CodeEdge

A directed relationship between two nodes.

CodeGraph

The shared code structure graph.

CodeGraphTool

code.graph — build (or refresh) the code structure graph.

CodeNode

A symbol in the code graph.

CodeQueryTool

code.query — natural-language queries against the code graph.

FragmentSearchTool

fragment.search — locate code fragments mentioning a query.

Functions

register_code

Register the code tools (4) against a shared graph.