/explain

Deep-dive explanation of Go code with diagrams

**If `$ARGUMENTS` is empty or not provided:**

Display usage information and ask for input:

**Usage:** `/explain <target>`

**Examples:**

- `/explain pkg/auth/login.go` - Explain a file
- `/explain HandleAuthentication` - Explain a function
- `/explain pkg/services/` - Explain a package

**Workflow:**

1. Analyze the specified Go code target
2. Extract key concepts, interfaces, dependencies
3. Generate documentation-style explanation
4. Create Mermaid diagrams for complex flows
5. Identify idiomatic Go patterns used

Ask the user: "What file, function, or package would you like me to expl...