fix: install scripts clone v0.7.5 (was v0.7.2)

docs: update v0.7.5 page pipeline + features

docs: v0.7.5 landing page for GitHub Pages

docs: fix install command for PowerShell 5.1 (irm instead of iwr)

docs: smart installer scripts + simplified website

fix: install.ps1 ErrorActionPreference Stop → Continue

fix: use iwr instead of irm for install script (PS5 compat)

fix: install.ps1 cd out before deleting old folder

docs: update v0.7.2 webpage with one-liner install commands

feat: one-line installer scripts served via clawdcursor.com

docs: v0.7.2 page — chain install commands to prevent skipping cd

docs: v0.7.2 page — OS-specific install tabs

docs: add v0.7.2 website page + link from landing

Update hero badge to v0.6.3

Add v0.7.0 release page