Switch to dotnet runner label, remove container override

.forgejo/workflows/build.yml

@@ -8,10 +8,8 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
-    container: mcr.microsoft.com/dotnet/sdk:10.0
+    runs-on: dotnet
     steps:
-      # No checkout needed — Forgejo Actions auto-clones the repo
       - name: Restore dependencies
         run: dotnet restore
 
@@ -24,8 +22,7 @@ jobs:
   publish:
     needs: build
     if: github.ref == 'refs/heads/main'
-    runs-on: ubuntu-latest
-    container: mcr.microsoft.com/dotnet/sdk:10.0
+    runs-on: dotnet
     steps:
       - name: Publish Blazor WASM
         run: dotnet publish -c Release -o /tmp/publish
@@ -35,5 +32,3 @@ jobs:
           echo "Deploying StellarisIdle Blazor WASM to /srv/web/stellaris.holoshaii.dev/"
           mkdir -p /srv/web/stellaris.holoshaii.dev
           cp -r /tmp/publish/wwwroot/* /srv/web/stellaris.holoshaii.dev/
-        # Only works if runner runs on same host as web server
-        # For remote deploy, use rsync/scp instead