docs: add Windows unblock troubleshooting for launch issues

fix: address code review findings across security, quality, and testing

refactor: comprehensive code quality improvements (P0-P3)

fix: address critical and high priority security issues from review

ui: clean up design with minimal aesthetic

fix: correct wailsjs import paths and build script

ci: update Go version to 1.22 in release workflow

docs: add bilingual README with Korean/English sections

chore: add go.sum and update dependencies to Wails v2.11.0

feat: initial implementation of Claude Code Windows One-Click Installer