chore: add Prettier configuration file (.prettierrc)

[vansh7nvc]

Summary

Closes #58 — adds a Prettier configuration file (.prettierrc) to the repository root.

Changes

1. .prettierrc

• Created the configuration file specifying double quotes, semicolons, and 2-space tab width.

[kannupriyakalra]

The .prettierrc config has no effect without prettier installed. It's not in devDependencies and there's no format script in package.json, so developers have no way to actually run it short of npx prettier --write ..

This PR needs at minimum:

// package.json — devDependencies
"prettier": "^3.x"

// package.json — scripts
"format": "prettier --write .",
"format:check": "prettier --check ."

format:check is also worth wiring into CI alongside the upcoming typecheck step (#65) so formatting drift is caught automatically.

[kannupriyakalra]

Review summary

Verdict: Request changes — 1 error.

What's good

• The config values match the existing code style: double quotes, semicolons, 2-space indentation, ES5 trailing commas — no churn on existing files when Prettier runs.

Error

prettier package is missing
The .prettierrc config file is inert without prettier installed. It's absent from both devDependencies and scripts in package.json, so there's no way to actually run it. The PR needs:

1. prettier added to devDependencies (e.g. "prettier": "^3.x")
2. A format script: prettier --write .
3. A format:check script: prettier --check . — useful for CI

Without these, the config file ships but does nothing, and developers won't know how to invoke it.

[kannupriyakalra]

Hey @vansh7nvc — one blocker to fix before this can merge: prettier isn't installed and there's no format script, so the .prettierrc config has no effect. See the inline comment for the exact changes needed in package.json. Quick fix — should only take a couple of minutes!