refactor: migrate to eslint-for-ai with enhanced type safety

[eli0shin]

Summary

This PR modernizes the development infrastructure and improves type safety across the codebase through:

• Migration to eslint-for-ai for AI-friendly linting standards
• Implementation of Changesets for automated release management and semantic versioning
• Enhanced type safety with @total-typescript/ts-reset and type-safe JSON parsing
• Re-export of MCP SDK types for better protocol consistency

Changes

Infrastructure

• Release Management: Added Changesets configuration for automated versioning and changelog generation
  • GitHub Actions workflow for automated PR creation and npm publishing
  • Changeset status checks to ensure releases are properly documented
• Claude Command: Added /changeset command for automatic changeset generation from git history

Type Safety

• Enhanced Type Definitions: Added @total-typescript/ts-reset for improved built-in type inference
• Type Guards: Implemented isObject, parseJsonRpcResponse, and parseToolsArray for runtime-safe JSON parsing
• SDK Types: Re-exported MCP SDK types instead of maintaining custom type definitions
• Zod Integration: Leveraged Zod schemas from MCP SDK for type-safe response parsing

ESLint Configuration

• Modern Config: Migrated to eslint-for-ai package consolidating multiple ESLint dependencies
• Dependencies Removed: @eslint/js, typescript-eslint, eslint-plugin-import-x, globals
• Code Quality: Fixed type assertions, removed unnecessary conditions, addressed console statements

Benefits

• Automated Releases: Changesets provides automated version bumping and changelog generation based on semantic versioning
• Better Documentation: Release notes automatically generated from changeset summaries
• Improved Type Safety: Type guards and ts-reset eliminate unsafe type assertions and improve runtime safety
• Simplified Configuration: Single ESLint package reduces maintenance burden
• AI-Friendly Standards: ESLint rules optimized for AI code generation and analysis

Test Plan

• All existing tests pass with updated type-safe implementations
• ESLint configuration validates successfully
• Type checking passes with enhanced type definitions
• Integration tests confirm runtime type safety improvements
• Changeset workflows configured and validated

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR modernizes the codebase by migrating to eslint-for-ai for consolidated ESLint configuration and enhances type safety through @total-typescript/ts-reset and custom type guard functions. The changes also introduce Changesets for automated release management.

• Replaces multiple ESLint packages with the single eslint-for-ai package
• Adds runtime type validation with custom type guard functions for JSON-RPC responses
• Implements @total-typescript/ts-reset for improved built-in TypeScript type definitions
• Introduces Changesets workflow for versioning and publishing

Reviewed changes

Copilot reviewed 18 out of 20 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
tests/wildcard-filtering.test.ts	Adds helper function for process output handling with explicit type annotations
tests/test-utils.ts	Introduces isJsonRpcResponse type guard and simplifies JSON parsing logic
tests/test-messages.ts	Updates default parameter syntax to use implicit typing
tests/setup.ts	Replaces console.log with process.stderr.write for test output
tests/proxy.test.ts	Modifies invalid command test to check async spawn behavior
tests/integration.test.ts	Adds type guard and ESLint disable comments for Bun-specific type narrowing
tests/bunx-integration.test.ts	Removes redundant type checks and simplifies error handling
src/types.ts	Adds type guard functions parseJsonRpcResponse and parseToolsArray for safe JSON parsing
src/reset.d.ts	Imports ts-reset for enhanced TypeScript type definitions
src/proxy-server.ts	Adds readonly modifiers, uses Zod schemas for validation, and adopts nullish coalescing
src/cli.ts	Integrates new type guard functions for safer JSON parsing in CLI operations
package.json	Replaces ESLint packages with eslint-for-ai and adds Changesets dependencies
eslint.config.mjs	Simplifies configuration to use eslint-for-ai recommended config
.github/workflows/version.yml	Adds workflow for automated versioning and publishing
.github/workflows/changeset-check.yml	Adds workflow to enforce changesets on source changes
.changeset/*	Adds Changesets configuration and initial changeset file

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