Add comprehensive workshop guide for mastering GitHub Administration on EMU

This document outlines a 3-hour intermediate/advanced workshop focused on administering GitHub Enterprise Cloud with Enterprise Managed Users (EMU). It includes workshop overview, learning outcomes, prerequisites, agenda, and detailed modules covering governance, identity, access, policies, security, GitHub Actions, and migration readiness. The guide emphasizes the importance of governance before migration and provides decision moments for participants to engage in discussions.

Author: CalinL

README.md

@@ -6,6 +6,9 @@
 
 Comprehensive L400-level technical documentation for GitHub Enterprise Cloud administration and governance.
 
+### Workshop Guide
+- [🎓 Mastering GitHub Administration on EMU — 3-Hour Workshop](docs/00-mastering-github-administration-workshop.md) - Instructor-led workshop for Enterprise Managed Users enterprises, anchored to the Enterprise Adoption Plan; clear learning objectives, decision moments, EMU-specific limits and pitfalls, and embedded reference tables so participants don't need to flip away from the deck
+
 ### Enterprise Administration
 - [📘 Enterprise Hierarchy](docs/01-enterprise-hierarchy.md) - GHEC structure, roles, and multi-org management
 - [🏢 Organization Strategies](docs/02-organization-strategies.md) - Single/multi-org patterns, red-green-sandbox-archive
@@ -58,24 +61,24 @@ Comprehensive L400-level technical documentation for GitHub Enterprise Cloud adm
 
 ## Hands-on Labs
 
-Practical exercises to reinforce GitHub administration concepts.
+Short guided exercises covering **foundational GitHub mechanics** (webhooks, Actions settings, branch protection, repository templates, REST and GraphQL APIs). These predate the EMU workshop refocus and are useful as standalone skill-builders rather than direct reinforcement of the EMU governance modules — see the workshop's [§9 lab map](docs/00-mastering-github-administration-workshop.md#hands-on-labs-optional-after-the-workshop) for closest touchpoints and an EMU caveat on `setup.md`.
 
 ### Hands-on Labs Setup
 - [ ]  [Lab Setup](/labs/setup.md)
 
-### Module 1: Introduction to Repository Webhooks and Events
+### Lab 01: Introduction to Repository Webhooks and Events
 - [ ]  _Hands-on Lab:_ > [Activity 1](/labs/lab01.md)
 
-### Module 2: Managing GitHub Actions settings for a repository
+### Lab 02: Managing GitHub Actions settings for a repository
 - [ ]  _Hands-on Lab:_ > [Activity 2](/labs/lab02.md)
 
-### Module 3: Managing a branch protection rule
+### Lab 03: Managing a branch protection rule
 - [ ]  _Hands-on Lab:_ > [Activity 3](/labs/lab03.md)
 
-### Module 4: GitHub Templates
+### Lab 04: GitHub Templates
 - [ ]  _Hands-on Lab:_ > [Activity 4](/labs/lab04.md)
 
-### Module 5: GitHub API
+### Lab 05: GitHub API
 - [ ]  _Hands-on Lab:_ > [Activity 5](/labs/lab05.md)
 
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