Add CODEOWNERS requiring internal-dev review

.github/CODEOWNERS

@@ -0,0 +1,3 @@
+# All changes require an approving review from the internal-dev team.
+# Enforced via the org "main branch protection" ruleset (require_code_owner_review).
+* @Sea-Haven-Industries/internal-dev

.github/workflows/ci.yml

@@ -0,0 +1,11 @@
+name: CI
+on:
+  pull_request:
+    branches: [main, dev]
+jobs:
+  ci:
+    uses: Sea-Haven-Industries/.github/.github/workflows/ci-dotnet.yaml@main
+    with:
+      dotnet-version: "8.0.x"
+      solution: "SeaHavenIndustries.sln"
+      run-tests: true