[codex] Fix MCP hot-reload feedback

[Star-Star66]

What changed

• honor the MCP mutation API's requiresRestart result for both add and remove flows
• only show the marketplace restart warning when an installed server is not live-bridged
• update English and Chinese feedback so successful hot reload no longer claims a restart is required
• add focused regression tests for restart and bridge-state decisions

Why

The dashboard previously ignored the remove response and always displayed restart guidance. Marketplace details also showed a stale restart warning even when the MCP server had already been bridged into the current session.

Validation

• npm run verify
• 338 test files passed
• 3914 tests passed, 2 skipped
• build, lint, and typecheck passed

[Cyberforker]

Review Summary

Reviewed & merged by Carbon Code

Tests: npm run verify - 3914/3914 passed, 2 skipped
Fix: honor MCP mutation API restart feedback and only show restart guidance when an installed server is not live-bridged.

Thanks @Star-Star66 for the focused dashboard hot-reload feedback fix and regression coverage.

Co-Authored-By: Carbon Code carboncode@code.ai6666.com

-- Carbon Code