Add Requirement

COMMAND: Add a requirement to specs. Auto-detect type from description.

Execute

1. Parse argument for requirement description
2. Detect type: FR (feature) or NFR (performance/security/etc)
3. Create spec file (scaffold dirs if needed)
4. Report what was created

Type Detection

Templates

Source of truth: _templates/TEMPLATES.md

Feature Spec Template (inline for non-interactive execution)

---
status: Active
maturity: Exploring
module: src/[module]/
related_adrs: []
---

# [Feature Name]

## Overview
[1-2 sentence description]

## User Stories
- As a [user type], I want [capability] so that [benefit]

## Requirements
- [Requirement 1]

## Implementation State

**Current focus:** TBD

**Open questions:**
- <!-- TODO: Add open questions -->

## Acceptance Criteria
<!-- TODO: Add when ready for test automation -->

NFR Template (inline for non-interactive execution)

---
category: Performance | Security | Scalability | Reliability
---

# [Category] Requirements

| Metric | Target | Measured At |
|--------|--------|-------------|
| [metric] | [target] | [location] |

## [Specific Requirement]
**Requirement:** [Measurable statement]
**Rationale:** [Why this matters]

Output

Added requirement to docs/specs/[path]

If details missing, use TBD markers.