📋 Implement Configurable Response Headers

Description

Add support for configurable response headers including license specifications, data retention policies, and custom metadata.

New Capabilities

• License Specification: MIT License headers with terms links
• Data Retention Policies: Configurable retention policy headers
• UI Component Specifications: Custom rendering hints for client applications
• Custom Metadata: Deployment-specific headers

Implementation

• Add ResponseHeadersOptions configuration
• Implement middleware for automatic header injection
• Update demo to showcase header customization
• Document header configuration patterns

Priority & Effort

• Priority: Medium
• Effort: Small
• Timeline: Phase 3 (Months 4-6) - 2-3 weeks
• Business Value: Medium - Compliance and customization

References

• NLWeb June 2025 Analysis - Section: "Configurable Response Headers"
• GitHub Issues Plan - Issue 6