diff --git a/.gitignore b/.gitignore
index 6efe806..5f250c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,25 +2,40 @@
 [Bb]in/
 [Oo]bj/
 [Aa]rtifacts/
+[Bb]enchmark[Dd]ot[Nn]et.[Aa]rtifacts/
 [Tt]est[Rr]esult*/
 coverage/
 *.coverage
 *.coveragexml
+*.nupkg
+*.snupkg
 
 # IDE and user-specific files
 .vs/
 .vscode/
+.idea/
+.dotnet/
 *.user
+*.userprefs
+*.rsuser
 *.suo
 *.userosscache
 *.sln.docstates
+*.DotSettings.user
 
 # Local configuration and credentials
 .env
 .env.*
 !.env.example
 appsettings.Development.json
+appsettings.Local.json
+appsettings.*.local.json
 secrets.json
+*.secrets.json
+*.pfx
+*.p12
+*.pem
+*.key
 
 # Operating-system files
 .DS_Store
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 5ad5c9f..84b9ebe 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -8,18 +8,21 @@ backwards compatible unless a breaking change is explicitly planned.
 Install the SDK pinned in `global.json`, then run:
 
 ```bash
-dotnet restore src/BinaryLane.Api/BinaryLane.Api.csproj --locked-mode
-dotnet restore tests/BinaryLane.Api.Tests/BinaryLane.Api.Tests.csproj --locked-mode
-dotnet restore examples/BinaryLane.Api.Demo/BinaryLane.Api.Demo.csproj --locked-mode
-dotnet build src/BinaryLane.Api/BinaryLane.Api.csproj -c Release --no-restore
-dotnet build tests/BinaryLane.Api.Tests/BinaryLane.Api.Tests.csproj -c Release --no-restore
-dotnet build examples/BinaryLane.Api.Demo/BinaryLane.Api.Demo.csproj -c Release --no-restore
-dotnet test tests/BinaryLane.Api.Tests/BinaryLane.Api.Tests.csproj -c Release --no-build
+dotnet restore src/BinaryLane.Api/BinaryLane.Api.csproj --locked-mode --disable-parallel
+dotnet restore tests/BinaryLane.Api.Tests/BinaryLane.Api.Tests.csproj --locked-mode --disable-parallel
+dotnet restore examples/BinaryLane.Api.Demo/BinaryLane.Api.Demo.csproj --locked-mode --disable-parallel
+dotnet build src/BinaryLane.Api/BinaryLane.Api.csproj -c Release --no-restore -m:1 -nodeReuse:false -p:BuildInParallel=false
+dotnet build tests/BinaryLane.Api.Tests/BinaryLane.Api.Tests.csproj -c Release --no-restore -m:1 -nodeReuse:false -p:BuildInParallel=false
+dotnet build examples/BinaryLane.Api.Demo/BinaryLane.Api.Demo.csproj -c Release --no-restore -m:1 -nodeReuse:false -p:BuildInParallel=false
+dotnet test tests/BinaryLane.Api.Tests/BinaryLane.Api.Tests.csproj -c Release --no-build -m:1 -nodeReuse:false
 dotnet format src/BinaryLane.Api/BinaryLane.Api.csproj --verify-no-changes --no-restore
 dotnet format tests/BinaryLane.Api.Tests/BinaryLane.Api.Tests.csproj --verify-no-changes --no-restore
 dotnet format examples/BinaryLane.Api.Demo/BinaryLane.Api.Demo.csproj --verify-no-changes --no-restore
 ```
 
+Run these commands sequentially. Do not run separate restore, build, test, or
+pack commands concurrently on the same checkout.
+
 The tracked demo application lives in
 `examples/BinaryLane.Api.Demo`. Configure a personal API token with user
 secrets; never put it in a file, test fixture, issue, pull request, or commit.
diff --git a/assets/package-icon-illustration.png b/assets/package-icon-illustration.png
new file mode 100644
index 0000000..4c0af25
Binary files /dev/null and b/assets/package-icon-illustration.png differ
diff --git a/assets/package-icon.svg b/assets/package-icon.svg
deleted file mode 100644
index 8b52ee1..0000000
--- a/assets/package-icon.svg
+++ /dev/null
@@ -1,10 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="256" height="256" viewBox="0 0 256 256" role="img" aria-labelledby="title">
-  <title id="title">Abstract network route icon</title>
-  <rect width="256" height="256" rx="52" fill="#172554"/>
-  <path d="M66 82h55c19 0 35 16 35 35v57" fill="none" stroke="#67E8F9" stroke-linecap="round" stroke-linejoin="round" stroke-width="24"/>
-  <path d="M100 174h35c19 0 35-16 35-35V82" fill="none" stroke="#A7F3D0" stroke-linecap="round" stroke-linejoin="round" stroke-width="24"/>
-  <circle cx="66" cy="82" r="17" fill="#F8FAFC"/>
-  <circle cx="100" cy="174" r="17" fill="#F8FAFC"/>
-  <circle cx="156" cy="174" r="17" fill="#F8FAFC"/>
-  <circle cx="170" cy="82" r="17" fill="#F8FAFC"/>
-</svg>
diff --git a/eng/test-demo-package.sh b/eng/test-demo-package.sh
index 5e04939..92d1fc1 100755
--- a/eng/test-demo-package.sh
+++ b/eng/test-demo-package.sh
@@ -53,6 +53,7 @@ dotnet restore "$demo_project" \
     --source "$package_directory" \
     --source https://api.nuget.org/v3/index.json \
     --no-cache \
+    --disable-parallel \
     -p:RestoreLockedMode=false
 dotnet build "$demo_project" \
     --configuration Release \
diff --git a/src/BinaryLane.Api/icon.png b/src/BinaryLane.Api/icon.png
index 12c644c..fda5adb 100644
Binary files a/src/BinaryLane.Api/icon.png and b/src/BinaryLane.Api/icon.png differ