/arch

Start new feature - define spec and gather context

# Feature Specification

**Input:** $ARGUMENTS

Parse the input above. It may be:
- A single topic word (e.g., "auth")
- A longer description of what the user wants
- Context about priorities or constraints

Extract the core feature topic and any relevant context to inform your investigation.

## Objective

Define the feature through collaborative conversation. Produce a clear specification that captures behavior and—when relevant—high-level architecture.

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## Process

### 1. Initial Investigation

Briefly explore the codebase to understand:
- Relevant existing patterns or similar featu...