Run and repair quality gate failures

Run CI quality gates locally and repair failures in correct order

When CI quality gates fail and local repo needs repair in deterministic order (env → format → lint → type → test).

• · test coverage baseline
• · lint/type/format config

• · gate-by-gate pass/fail report
• · minimal repair patch set

• · pytest/coverage
• · mypy
• · ruff
• · black
• · isort

Project has linting and type-check configuration (mypy, ruff, black, isort)

• · Environment/dependency not installed
• · gate config mismatch with CI
• · code defects unreachable by formatting

• · 6-gate sequence defined
• · failure classification schema
• · repair-order discipline