Add James Petty author page

Adds content/authors/james-petty/_index.md so the `James Petty` byline
(used across 29 articles/podcasts) renders a full profile: tagline,
Gravatar avatar, bio, and social links.

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

Author: psjamesp

content/authors/james-petty/_index.md

@@ -0,0 +1,16 @@
+---
+title: "James Petty"
+tagline: "CEO, The DevOps Collective · PowerShell.org · Microsoft MVP"
+gravatar_hash: "a7f8b94204f4ca1e53c84aedc1242f8e"
+twitter: "https://twitter.com/psjamesp"
+bluesky: "https://bsky.app/profile/psjamesp.dev"
+website: "https://powershell.org"
+---
+
+James Petty is the CEO of The DevOps Collective, Inc. and helps run PowerShell.org.
+He is also the conference chair for [The PowerShell Summit](https://powershellsummit.org). A 7x Microsoft MVP, he is a co-author of
+*PowerShell in a Month of Lunches* and *Learn PowerShell Scripting in a month of Lunches*
+
+He is passionate about the PowerShell community — speaking at conferences and
+user groups, writing, and helping others get the most out of PowerShell and
+DevOps automation.