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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/features/graph.md

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+# Code Knowledge Graph
+
+The Code Knowledge Graph feature parses your repository source code and builds an interactive graph of symbols (functions, classes, modules) and their relationships (calls, imports, inheritance).
+
+## Graph Index
+
+Navigate to **Code Graph** in the sidebar to see all repositories. Click a repository card to open its graph explorer.
+
+## Building a Graph
+
+Before exploring, you need to build the graph:
+
+1. Open the graph explorer for a repository
+2. Click **Build Graph**
+3. The agent parses all source files and constructs the graph
+4. A spinner shows build progress
+
+The graph builder supports these languages:
+- Rust
+- TypeScript
+- JavaScript
+- Python
+
+## Graph Explorer
+
+The graph explorer provides an interactive network visualization.
+
+### Canvas
+
+The main area renders an interactive network diagram using vis-network:
+
+- **Nodes** represent code symbols (functions, classes, structs, enums, traits, modules, files)
+- **Edges** represent relationships between symbols
+- Nodes are **color-coded by community** — clusters of highly connected symbols detected using Louvain community detection
+- Pan by dragging the background, zoom with scroll wheel
+
+### Node Types
+
+| Type | Description |
+|------|-------------|
+| Function | Standalone functions |
+| Method | Methods on classes/structs |
+| Class | Classes (TypeScript, Python) |
+| Struct | Structs (Rust) |
+| Enum | Enumerations |
+| Interface | Interfaces (TypeScript) |
+| Trait | Traits (Rust) |
+| Module | Modules and namespaces |
+| File | Source files |
+
+### Edge Types
+
+| Type | Description |
+|------|-------------|
+| Calls | Function/method invocation |
+| Imports | Module or symbol import |
+| Inherits | Class inheritance |
+| Implements | Interface/trait implementation |
+| Contains | Parent-child containment (module contains function) |
+| TypeRef | Type reference or usage |
+
+### Statistics
+
+The statistics panel shows:
+- Total node and edge count
+- Number of detected communities
+- Languages found in the repository
+- File tree of the codebase
+
+### Search
+
+Search for symbols by name:
+
+1. Type at least 2 characters in the search box
+2. Matching symbols appear in a dropdown
+3. Click a result to highlight it on the canvas and open the inspector
+
+### Code Inspector
+
+When you click a node (on the canvas or from search), the inspector panel shows:
+
+- **Symbol name** and kind (function, class, etc.)
+- **File path** with line range
+- **Source code** excerpt from the file
+- **Connected nodes** — what this symbol calls, what calls it, etc.
+
+## Use Cases
+
+- **Onboarding** — Understand unfamiliar codebase structure at a glance
+- **Architecture review** — Identify tightly coupled modules and circular dependencies
+- **Security** — Trace data flow from entry points to sensitive operations
+- **Refactoring** — See what depends on code you plan to change