Added

• Project stats playground expanded from 10 to 50 open-source PHP projects with per-directory breakdown and expandable node-variant rows.
• Per-project stats pages with interactive directory tree navigation.
• AST node comparison page for side-by-side project analysis.

Fixed

• Parser no longer consumes [index] after ->prop in string interpolation (php-rs-parser).
• Parser now correctly handles single-keyword asymmetric visibility (private(set)) (php-rs-parser).