v0.2.0 - Documentation improvements

Added

• Demo gif showing hook in action
• Mermaid sequence diagram in README
• Documentation of Claude Code 2.0.22+ requirement

Changed

• Renamed project from "optimizer" to "improver" for accuracy
• Simplified bypass output to use plain text consistently
• Updated demo gif speed to 1.5x for more concise demonstration

Fixed

• LICENSE copyright updated to use GitHub handle