style: format code with Prettier

[WA11AX]

Summary

• run Prettier across repository
• execute ESLint autofix to tidy code

Testing

• npx prettier --write .
• npm run lint -- --fix
• npm test

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https://chatgpt.com/codex/tasks/task_e_689c2b6a932883279fe8d2a67511853a

[Copilot]

Pull Request Overview

This PR applies code formatting using Prettier and ESLint autofix to standardize code style across the repository. The changes focus on formatting consistency without altering functionality.

• Removes trailing whitespace and empty lines at file endings
• Reformats multi-line expressions and function parameters for better readability
• Simplifies parentheses usage in type assertions

Reviewed Changes

Copilot reviewed 16 out of 17 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
server/validation.ts	Removes trailing empty line
server/routes.ts	Removes trailing empty line
server/rateLimiter.ts	Removes unnecessary parentheses in type assertions and reformats multi-line expressions
server/rateLimiter.simple.ts	Removes trailing empty line
server/middleware.ts	Removes trailing empty line
server/logger.ts	Reformats function parameters and winston format configuration
server/errorHandler.ts	Removes unnecessary parentheses in type assertion and trailing empty line
server/db.ts	Removes trailing empty line
server/auth.ts	Removes trailing empty line
client/src/pages/tournaments.tsx	Removes trailing empty line
client/src/pages/tournament-detail.tsx	Removes trailing empty line
client/src/components/ui/sidebar.tsx	Reformats ternary expression to single line
client/src/components/ui/chart.tsx	Reformats filter function to multi-line for readability
client/src/components/ui/carousel.tsx	Removes trailing empty line
client/src/components/tournament-card.tsx	Removes trailing empty line
.eslintrc.json	Reformats ESLint rule configuration to multi-line

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