Add MIT LICENSE file

[deslawson]

Added a standard MIT LICENSE file to the repository root with the copyright line Copyright (c) 2026 XStreamRoll. This resolves the project being legally unlicensed, enabling contribution, distribution, and adoption without legal risk. The MIT license was chosen for its permissiveness and compatibility with the project's existing stack (Next.js, NestJS, PostgreSQL).

Summary

Added an MIT LICENSE file to the repository root to resolve the project being legally unlicensed. Without this, the code cannot be used, modified, or distributed by anyone. MIT was chosen for its permissiveness and compatibility with the existing tech stack.

Related issues

Closes #197

Type of change

• feat
• fix
• docs
• chore
• test
• ci

Match the PR title to Conventional Commits: <type>(<scope>): <summary>.

Testing performed

No automated tests needed.I Verified the file is valid MIT license text with correct copyright holder and placed at the repository root.
ls LICENSE
cat LICENSE

Screenshots (if applicable)

Attach screenshots or animated GIFs for UI changes.

Checklist — author

• I rebased onto origin/main and resolved conflicts.
• I ran the quality gates locally: npm run lint, npm run build, npm test.
• Title follows Conventional Commits and references the issue (see above).
• I added/updated tests where applicable and they pass locally.
• No new TypeScript errors or lint warnings introduced.
• I updated documentation if the change affects public behavior.
• Screenshots included for UI changes.

Checklist — reviewer guidance

• Required checks: lint, build, unit tests, and any package-specific E2E must be green.
• Request review from CODEOWNER(s) for touched packages.
• Prefer small, focused PRs. If large, confirm feature-flagging or follow-up tasks.

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Follow the full PR process in CONTRIBUTING.md — particularly: sync with main, run quality gates, request a CODEOWNER review, and use squash-and-merge with a Conventional Commit-style squash message.

Closed #197