Update subscriptions

[anandani4136]

No description provided.

[Copilot]

Pull Request Overview

This PR refactors the subscription system from an email-based model to a user-based model. Instead of storing email addresses directly in subscription lists, subscriptions are now linked to user IDs with a foreign key relationship to the authInfo table.

• Subscription data model changed from storing arrays of emails to individual user-mailing list records
• API endpoints updated to handle user-based subscriptions with proper authorization checks
• New endpoints added for user subscription management and unsubscription functionality

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/services/subscription/subscription-schema.ts	Updates Zod validators and Mongoose schema to use userId instead of email arrays
src/services/subscription/subscription-router.ts	Refactors all endpoints to work with user-based subscriptions and adds new user management endpoints
src/services/subscription/subscription-router.test.ts	Updates all tests to use userId-based subscriptions and adds tests for new endpoints
src/database.types.ts	Updates TypeScript types to reflect new subscription table structure
docker/init-scripts/01-schema.sql	Modifies database schema to use userId with foreign key constraint and composite primary key

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[Timothy-Gonzalez]

Several syntax issues but @anandani4136 said this was tested & we'll fix later, good for prod since we need it now