Added

• Module inference rewrite: directory elbow + LCOM4 adaptive split + ICR + TCC quality metrics
• cha layers --depth N to override auto-detected directory depth
• cha layers --format dsm|terminal output formats
• Composite risk scoring for long_method: risk = lines_ratio × complexity_factor

Changed

• Module inference algorithm: replaced Union-Find with directory elbow + LCOM4 + ICR
• long_method severity now based on composite risk (Hint/Warning/Error at risk 1/2/4)

Fixed

• cha:ignore directive now covers up to 2 lines before a function
• Fixed corrupted dot output and switched to LR layout for better layer readability