crowd-runner

feat: seeded random boss skills (bullet patterns, AOE slam, adds, damage-shield) + verifier rework

feat: homing enemies, shrinking off-lane road guards, longer fire range + rebalance

style: restyle UI to 8-bit NES/Mario aesthetic

feat: endless procedural stages, army-scaled threats, random events, statistical verifier

feat: difficulty tiers (Normal/Hard), fan+enrage boss, Stage 3, balance verifier