feat(server): add seeding script

[WA11AX]

Summary

• remove automatic call to initializeData from storage
• add dedicated seeding script and npm command
• document how to seed demo tournaments

Testing

• npm test
• npm run lint:check
• npm run type-check

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https://chatgpt.com/codex/tasks/task_e_689cd877c9dc83279fb651eb3560cbb4

[Copilot]

Pull Request Overview

This PR removes automatic initialization of demo tournament data and introduces a dedicated seeding script for better control over when sample data is populated. The changes provide a cleaner separation between application startup and data seeding.

• Removes automatic initializeData call from storage module
• Adds dedicated seeding script with proper error handling and exit codes
• Documents the new seeding process in README files

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
server/storage.ts	Removes automatic initialization call that was running on startup
server/seed.ts	New dedicated seeding script with error handling and process management
server/README.md	Documents the new npm seed command
package.json	Adds npm script for running the seeding process
README.md	Updates setup instructions to include optional seeding step

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