Add middleware to handle 301 redirects for changed location URLs

[Copilot]

When organization names or location details change, the location URL slugs change accordingly, but old URLs were showing 404 errors instead of redirecting to the new URLs. This creates broken links for users and impacts SEO.

Problem

The issue occurred when:

• Organization names changed (e.g., "Montefiore Medical Center — Albert Einstein Wellness Center" → "Montefiore Einstein")
• Location addresses changed, affecting neighborhood names in URLs
• Any combination of the above

For example:

• Old URL: /locations/montefiore-medical-center-albert-einstein-wellness-center-port-morris
• New URL: /locations/montefiore-einstein-port-morris
• Result: 404 error instead of redirect

Solution

Added Next.js middleware (src/middleware.ts) that automatically handles 301 redirects for changed location URLs:

1. Intercepts location requests: Monitors requests to /locations/{slug} patterns
2. Checks existence: Makes HEAD request to verify if location exists
3. Smart search: If 404, extracts organization/location terms from old slug and searches for matching locations
4. Similarity matching: Uses string similarity algorithm to find best matching location (threshold > 0.3)
5. 301 redirect: Redirects to new URL preserving query parameters and fragments

Key Features

• SEO-friendly: Uses proper 301 redirects to preserve search rankings
• Performance-optimized: Includes request timeouts and limits search attempts
• Error-resilient: Graceful fallback to normal 404 if search fails
• Zero breaking changes: Purely additive, doesn't modify existing code
• Comprehensive logging: Debug information for monitoring redirect behavior

Test Results

Validated against the reported examples:

• montefiore-medical-center-albert-einstein-wellness-center-port-morris → montefiore-einstein-port-morris ✅
• montefiore-medical-center-albert-einstein-wellness-center-wakefield → montefiore-einstein-wakefield ✅
• montefiore-medical-center-morris-heights → montefiore-einstein-* ✅
• montefiore-medical-center-norwood → montefiore-einstein-norwood-111-east-210th-street ✅

Fixes #242.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• fonts.googleapis.com
  • Triggering command: /usr/local/bin/node /home/REDACTED/work/yourpeer.nyc/yourpeer.nyc/node_modules/next/dist/compiled/jest-worker/processChild.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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[jbeard4]

@shakilhossain1 Is this PR old? Do we still need a middleware? I thought we fixed this issue here. Please let me know if I should close this PR.