chore: Replace ESLint with Oxlint/Oxfmt

[mahata]

This pull request makes several key changes to migrate the project from ESLint to Oxlint/Oxfmt for linting and formatting, updates the CI workflow to reflect these tools, and applies consistent code style and formatting across the codebase and documentation. The most important changes are summarized below:

Tooling migration and configuration:

• Replaces ESLint and related dependencies with oxlint and oxfmt in package.json, updates npm scripts accordingly, and removes the eslint.config.js file. [1] [2] [3]
• Adds .oxlintrc.json and .oxfmtrc.json configuration files to define ignore patterns and set up linting/formatting rules. [1] [2]

CI workflow improvements:

• Updates the GitHub Actions workflow to add a dedicated lint job using oxlint and oxfmt, ensures linting passes before running Playwright component tests, and upgrades pnpm to version 10. [1] [2] [3]

Codebase formatting and consistency:

• Applies consistent use of double quotes, semicolons, and code style throughout TypeScript, Markdown, and configuration files to align with new formatting rules. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19]

Documentation updates:

• Updates README.md to reflect the new linting and formatting tools, and ensures code samples use the new preferred style (double quotes, semicolons, etc.). [1] [2]

These changes collectively modernize the project's code quality tooling, enforce consistent code style, and improve the reliability of CI checks.

[Copilot]

Pull request overview

This pull request migrates the project from ESLint to Oxlint/Oxfmt for linting and formatting, applies consistent code styling (double quotes and semicolons) across the codebase, and updates the CI workflow to incorporate the new tooling.

Changes:

• Replaces ESLint and related dependencies with Oxlint v1.41.0 and Oxfmt v0.26.0 in package.json and removes eslint.config.js
• Adds .oxlintrc.json and .oxfmtrc.json configuration files with ignore patterns for dist and playwright/.cache directories
• Updates GitHub Actions workflow to add a dedicated lint job using oxlint and oxfmt that runs before Playwright tests, and upgrades pnpm to version 10
• Applies consistent formatting changes throughout TypeScript, test, configuration, and markdown files (double quotes instead of single quotes, semicolons at statement ends, consistent indentation)

Reviewed changes

Copilot reviewed 93 out of 96 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
package.json	Updates dependencies, removes ESLint packages, adds oxlint and oxfmt, updates npm scripts
.oxlintrc.json	New configuration file for oxlint with ignore patterns
.oxfmtrc.json	New configuration file for oxfmt with ignore patterns
eslint.config.js	Removed - no longer needed after migration to oxlint
.github/workflows/test-ct.yml	Adds lint job, updates workflow name, upgrades pnpm to v10, adds dependency between lint and test jobs
src//*.ts, src//*.tsx	Formatting changes: double quotes, semicolons, consistent code style
*.md files (posts, fixtures)	YAML front matter formatting updates to use double quotes
vite.config.ts, playwright-ct.config.ts, playwright.config.ts, tsconfig.json	Formatting updates for consistency
README.md	Code examples reformatted with double quotes and semicolons

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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[Copilot]

Component state property 'error' is written, but it is never read.

[mahata]

@copilot open a new pull request to apply changes based on this feedback

[Copilot]

@mahata I've opened a new pull request, #30, to work on those changes. Once the pull request is ready, I'll request review from you.