Fix/release please permissions (#6)

* fix: update release-please workflow permissions and configuration

- Add issues: write permission to fix label creation error
- Configure multi-package release for both MCP server and FoundryVTT module
- Add release-please-config.json for proper package management
- Add FoundryVTT module artifact upload to releases
- Enable proper module installation via GitHub releases

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: resolve ESLint configuration and parsing errors

- Fix ESLint configuration for ES modules (.eslintrc.js → .eslintrc.cjs)
- Resolve parsing errors in character/manager.ts (incomplete template literals)
- Fix JSDoc comment syntax in foundry/types.ts (remove nested /* */ comments)
- Fix duplicate property declarations and identifier conflicts
- Add proper curly braces for if statements and unused variable prefixes
- Update package dependencies for ESLint TypeScript support

ESLint now runs successfully with 0 errors and 53 warnings (mostly any types in tests).

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* feat: major codebase improvements and diagnostics integration

- Add comprehensive diagnostics module with client and types
- Integrate diagnostics into main MCP server
- Remove deprecated useRestModule configuration
- Enhance FoundryVTT client with improved connection handling
- Update all tests for new architecture
- Improve documentation and configuration examples
- Enhance FoundryVTT REST API module functionality
- Fix formatting and standardize codebase style

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

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Co-authored-by: Claude <noreply@anthropic.com>

Author: laurigates