diff --git a/supabase/migrations/20251106235753_ac63e78e-ccd6-4f4f-b24b-fe168be7b001.sql b/supabase/migrations/20251106235753_ac63e78e-ccd6-4f4f-b24b-fe168be7b001.sql
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+++ b/supabase/migrations/20251106235753_ac63e78e-ccd6-4f4f-b24b-fe168be7b001.sql
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+-- ============================================================================
+-- PHASE 2: RESILIENCE IMPROVEMENTS - Slug Uniqueness Constraints
+-- ============================================================================
+-- Add UNIQUE constraints on slug columns for companies and ride_models
+-- to prevent duplicate slugs and ensure data integrity
+
+-- Add unique constraint to companies.slug
+ALTER TABLE companies 
+  ADD CONSTRAINT companies_slug_unique UNIQUE (slug);
+
+-- Add unique constraint to ride_models.slug
+ALTER TABLE ride_models 
+  ADD CONSTRAINT ride_models_slug_unique UNIQUE (slug);
+
+-- Add indexes for performance (if they don't already exist)
+CREATE INDEX IF NOT EXISTS idx_companies_slug ON companies(slug);
+CREATE INDEX IF NOT EXISTS idx_ride_models_slug ON ride_models(slug);
+
+COMMENT ON CONSTRAINT companies_slug_unique ON companies IS 
+  'Ensures each company has a unique slug for URL routing';
+  
+COMMENT ON CONSTRAINT ride_models_slug_unique ON ride_models IS 
+  'Ensures each ride model has a unique slug for URL routing';
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