quality

Quality scorecard for DeepSeek Harness (dsh) plugins: 0-100, 6 components, fix suggestions, batch leaderboard. CLI + agent-callable quality_score tool.

DSH quality suite plugin: automatic tsc --noEmit diagnostics (code_check tool) + multi-lens /code-review command. Merged absorption of dsh-code-check (BSD-3) and dsh-command-code-review (MIT).