Checkstyle is now a ratchet: severity="error" only for rules that are at
zero violations, design-debt rules report as warnings and must be flipped
to error as soon as their backlog hits zero (tracked in TODO.md).
- thresholds tightened: MethodLength 80->40, CyclomaticComplexity 20->15,
NestedIfDepth 3->2, ParameterNumber 7->5; new rules ReturnCount(5),
FinalClass, HiddenField, VisibilityModifier; MagicNumber and
FinalLocalVariable promoted from warning to error (both clean)
- suppressions.xml emptied: 45 legacy entries removed, never add back
- fixed 102 baseline violations (431->329): FinalClass in 37 classes,
WhitespaceAround in 11 files
- TODO.md: Task 1 done (lolib removed, smoke test passed) and Task 2
baseline recorded (red report, per-package list, next steps)
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