fix: update database commands in package.json to include dotenv for local development

[heyy-kartik]

fix: add localhost backend port for local development in auth.ts
fix: correct valkey image reference in docker-compose.db.yaml

Description

Ensure drizzle-kit loads environment variables from .dev.vars

• This PR fixes an issue where running pnpm db:push or pnpm db:generate inside the server workspace fails because drizzle-kit
  doesn't automatically load the DATABASE_URL from Cloudflare's .dev.vars file.

• Why is this needed?

  • Currently, new developers setting up the project locally run into Error: password authentication failed or completely missing relations when trying to sign in. The pnpm db:push command exits silently or fails if DATABASE_URL isn't globally exported in the shell.

By prefixing the database scripts with dotenv -e .dev.vars, we guarantee that Drizzle always has the correct database connection string available during local setup and schema migrations

Type of Change

Please delete options that are not relevant.

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 💥 Breaking change (fix or feature with breaking changes)
• 📝 Documentation update
• 🎨 UI/UX improvement
• 🔒 Security enhancement
• ⚡ Performance improvement

Areas Affected

Please check all that apply:

• Email Integration (Gmail, IMAP, etc.)
• User Interface/Experience
• Authentication/Authorization
• Data Storage/Management
• API Endpoints
• Documentation
• Testing Infrastructure
• Development Workflow
• Deployment/Infrastructure

Security Considerations

For changes involving data or authentication:

• No sensitive data is exposed
• Authentication checks are in place
• Input validation is implemented
• Rate limiting is considered (if applicable)

Checklist

• I have read the CONTRIBUTING document
• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in complex areas
• I have updated the documentation
• My changes generate no new warnings
• I have added tests that prove my fix/feature works
• All tests pass locally
• Any dependent changes are merged and published

Additional Notes

During my initial local development setup, I got completely stuck because the database container initialized with the default postgres password, but the Drizzle migrations (pnpm db:push) were failing silently or throwing 500 Internal Server Error and missing relation errors because drizzle-kit wasn't picking up the DATABASE_URL from .dev.vars. Once I explicitly passed the environment variables using dotenv-cli, the schema pushed perfectly and the authentication errors disappeared.

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By submitting this pull request, I confirm that my contribution is made under the terms of the project's license.