🔧 Add DevContainer Configuration and GitHub Actions Workflows

[dsyme]

Summary

This pull request adds several new GitHub Actions workflows, DevContainer configuration, and developer experience improvements:

New Workflows

• ci.yml: Core continuous integration workflow
• create-branch.yml: GitHub Actions workflow for creating branches
• format-and-commit.yml: Workflow for formatting, linting, and committing changes
• integration-agentics.yml: Integration testing for agentic workflows
• ci-doctor.lock.yml: CI failure investigation and reporting workflow

DevContainer Improvements

• Updated .devcontainer/devcontainer.json with:
  • Node.js 24 support
  • Enhanced GitHub Actions integration
  • Added permissions for test repository access

Developer Tools

• Added configuration files:
  • .golangci.yml for Go linting
  • .nvmrc for Node.js version management
  • .prettierrc.json for code formatting
  • tsconfig.json for TypeScript configuration
  • vitest.config.js for JavaScript testing

Key Changes

• Enhanced build and test infrastructure
• Improved code quality tools
• Added comprehensive CI/CD workflows
• Better developer onboarding experience

Validation

• All workflows have been configured with appropriate permissions
• DevContainer setup ensures consistent development environment
• Linting and formatting tools integrated

Next Steps

• Review and merge DevContainer configuration
• Validate GitHub Actions workflows
• Ensure all developers use the new configuration