Fix install.ps1 encoding + add one-liner installs

Security audit fixes + full README with icon explanations

Fix git branch cache per directory

Replace GitHub icon with plain 'git:' label

Replace leaf emoji with GitHub icon (U+F3ED)

Split statusline into 2 lines for readability

Remove 'compact soon' warning from context bar

Add duration, lines changed, git branch, ctx label, rate limit alert

Add 5-hour rate limit window to statusline

Fix statusline for all OS and terminals

Initial release: Claude Code Powerups