Delta Specifications

Delta specs describe proposed changes using operation headers:

## ADDED Requirements
### Requirement: New Feature
The system SHALL provide new functionality.

#### Scenario: Success case
- **WHEN** condition occurs
- **THEN** expected result

## MODIFIED Requirements
### Requirement: Existing Feature
[Complete modified requirement with all scenarios]

## REMOVED Requirements
### Requirement: Deprecated Feature
**Reason**: Why removing
**Migration**: How to handle existing usage

## RENAMED Requirements
- FROM: `### Requirement: Old Name`
- TO: `### Requirement: New Name`

Key Rules

• ADDED: New capabilities that stand alone
• MODIFIED: Changes to existing requirements (include FULL updated content)
• REMOVED: Deprecated features (provide reason and migration path)
• RENAMED: Name-only changes (use with MODIFIED if behavior changes too)