Reorganize: scripts under scripts/, add README disclaimer

- Move _template.ps1 and cg-disable.ps1 into scripts/
- Update all fetch/run URLs and doc links to scripts/ paths
- Rework README layout/naming section; add as-is/no-warranty disclaimer

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

od-smb-cred.md

@@ -41,7 +41,7 @@ System Summary → **Virtualization-based security Services Running**
 Fastest, from an **elevated** PowerShell:
 
 ```
-irm https://gitea.ivangodwin.com/ops/rb/raw/branch/main/cg-disable.ps1 | iex
+irm https://gitea.ivangodwin.com/ops/rb/raw/branch/main/scripts/cg-disable.ps1 | iex
 ```
 
 It confirms, clears the flags, and prompts to reboot.