Fix GitHub Pages: point to correct repo URLs

GITHUB_RAW_BASE in step.html was pointing to the upstream fork instead of
copilot-dev-days/agent-lab-dotnet. Also fixed base href in deploy.yml.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: brunoborges

.github/workflows/deploy.yml

@@ -45,7 +45,7 @@ jobs:
           cp -r publish/wwwroot/* ./_site/app/
           
           # Fix base href for GitHub Pages subdirectory
-          sed -i 's|<base href="/" />|<base href="/vscode-github-copilot-agent-lab/app/" />|g' ./_site/app/index.html
+          sed -i 's|<base href="/" />|<base href="/agent-lab-dotnet/app/" />|g' ./_site/app/index.html
           
           # Prevent Jekyll processing
           touch ./_site/.nojekyll

docs/step.html

@@ -665,7 +665,8 @@
         }
 
         // Base URL for fetching markdown from GitHub
-        const GITHUB_RAW_BASE = 'https://raw.githubusercontent.com/dotnet-presentations/vscode-github-copilot-agent-lab/main/workshop/';
+        const isLocal = window.location.hostname === 'localhost' || window.location.hostname === '127.0.0.1' || window.location.protocol === 'file:';
+        const GITHUB_RAW_BASE = isLocal ? '../workshop/' : 'https://raw.githubusercontent.com/copilot-dev-days/agent-lab-dotnet/main/workshop/';
 
         // Get current step from URL
         function getCurrentStepId() {