Enhance Database Uniqueness and Fix Worker Script

[cd996]

addresses several crucial improvements and refinements:

1. Database Enhancements:

   • Introduced composite unique indexes on the 'links' and 'pages' tables to ensure the uniqueness of domain and shortcode combinations, thereby eliminating duplicate entries.
   • Modified 'links' and 'pages' tables to utilize hash values for uniqueness based on user IDs and URL/template data, replacing the prior unique indexes on short codes and domain names.
   • Altered the userId field from integer to text to provide greater flexibility.
   • Revised indexes and unique constraints to accommodate the new hash-based uniqueness.

2. Worker Script Fixes:

   • Amended references in the Cloudflare Pages worker type generation script.
   • Adjusted the ESLint configuration to exclude additional files during the build process.

Changes Made:

• Refined the database schema to enhance data integrity.
• Resolved issues in the worker script and ESLint configuration.