Chore: [#150] Migrate from ESLint and Prettier to Oxlint and Oxfmt

[RomiC]

Closes #150

Replace ESLint + Prettier with Oxlint + Oxfmt, matching the ya-disk and ya-disk-stream project setup.

Changes

• Remove eslint, @eslint/js, @eslint/markdown, eslint-config-prettier, eslint-plugin-prettier, globals and prettier
• Add oxlint 1.77.0 and oxfmt 0.62.0
• Add oxlint.config.mjs and oxfmt.config.mjs
• Delete eslint.config.js and .prettierrc
• Update lint-staged to run oxlint --fix + oxfmt on staged files
• Add format and format:check scripts
• Fix ternary-as-statement patterns in specs to satisfy oxlint correctness rules

[greptile-apps]

Greptile Summary

The PR replaces ESLint and Prettier with Oxlint and Oxfmt and updates automation to use the new commands.

• Adds Oxlint and Oxfmt dependencies and configuration.
• Splits CI linting and formatting checks into matching package scripts.
• Updates staged-file processing and reformats affected files.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
package.json	Defines matching Oxlint and Oxfmt scripts, dependencies, and lint-staged commands.
.github/workflows/npm-test.yml	Replaces the removed aggregate lint command with existing lint and formatting-check scripts.
.github/workflows/npm-publish.yml	Runs the new lint and formatting checks before testing and publication.
oxlint.config.mjs	Introduces the Oxlint correctness and Node environment configuration.
oxfmt.config.mjs	Introduces formatting settings corresponding to the previous project style.
specs/cli.spec.js	Rewrites test conditionals to satisfy the new lint rules without changing their intended branches.

_{Reviews (2): Last reviewed commit: "Chore: [#150] Migrate from ESLint and Pr..." | Re-trigger Greptile}

[greptile-apps]

Removed script breaks CI

When either GitHub Actions workflow runs, it still invokes npm run lint:all, but this scripts block no longer defines that command, causing the test and publish pipelines to terminate with npm's missing-script error.

Prompt To Fix With AI

This is a comment left during a code review.
Path: package.json
Line: 11-14

Comment:
**Removed script breaks CI**

When either GitHub Actions workflow runs, it still invokes `npm run lint:all`, but this scripts block no longer defines that command, causing the test and publish pipelines to terminate with npm's missing-script error.

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