BUG-T16: Tool Distribution (Pie) widget is cropped at medium widths

[SoundBlaster]

Description

Fixes BUG-T16 by preventing medium-width cropping of the Tool Distribution (Pie) widget in the Web UI dashboard.

Implemented changes:

• Updated chart container CSS to avoid clipping at medium breakpoints.
• Added responsive doughnut legend positioning logic:
  • right on wide layouts
  • bottom on medium/smaller layouts (<= 1280px)
• Added regression coverage for responsive doughnut legend behavior.
• Archived FLOW artifacts for BUG-T16 (plan, validation, review).

Type of Change

• Bug fix
• New feature
• Documentation update
• Refactoring
• CI/CD improvement

Quality Gates

Before submitting, ensure all quality gates pass:

make check

Or run individually:

• make test - All tests pass with ≥90% coverage
• make lint - No linting errors
• make format - Code is properly formatted
• make typecheck - Type checking passes
• make doccheck - Documentation is synced with DocC (if docs changed)

Documentation Sync

If you modified files in docs/, ensure corresponding DocC files are also updated:

docs/ file	DocC file
docs/installation.md	mcpbridge-wrapper.docc/Installation.md
docs/cursor-setup.md	mcpbridge-wrapper.docc/CursorSetup.md
docs/claude-setup.md	mcpbridge-wrapper.docc/ClaudeCodeSetup.md
docs/codex-setup.md	mcpbridge-wrapper.docc/CodexCLISetup.md
docs/troubleshooting.md	mcpbridge-wrapper.docc/Troubleshooting.md
docs/architecture.md	mcpbridge-wrapper.docc/Architecture.md
docs/environment-variables.md	mcpbridge-wrapper.docc/EnvironmentVariables.md
README.md	mcpbridge-wrapper.docc/mcpbridge-wrapper.md

• Documentation changes are synced with DocC catalog (or N/A)

Testing

• Added/updated tests for new functionality
• All tests pass locally
• Manually tested the changes

Checklist

• Code follows the project's style guidelines
• Self-review completed
• Comments added for complex code
• Documentation updated (if needed)
• No new warnings generated
• PR title is descriptive

Validation Output

• pytest -q => 629 passed, 5 skipped
• ruff check src/ => pass
• mypy src/ => pass
• pytest --cov => 91.33%

Task Artifacts

• /Users/egor/Development/GitHub/XcodeMCPWrapper/SPECS/ARCHIVE/BUG-T16_Tool_Distribution_Pie_widget_is_cropped_at_medium_widths/BUG-T16_Tool_Distribution_Pie_widget_is_cropped_at_medium_widths.md
• /Users/egor/Development/GitHub/XcodeMCPWrapper/SPECS/ARCHIVE/BUG-T16_Tool_Distribution_Pie_widget_is_cropped_at_medium_widths/BUG-T16_Validation_Report.md
• /Users/egor/Development/GitHub/XcodeMCPWrapper/SPECS/ARCHIVE/_Historical/REVIEW_bug_t16_pie_responsive.md