Refactor compare-view component to use observables for data loading, enhancing performance and responsiveness. Update compare service interfaces and methods for improved delta computation. Modify audit log component to handle optional event properties gracefully. Optimize Monaco editor worker loading to reduce bundle size. Introduce shared SCSS mixins for consistent styling across components. Add Gitea test instance setup and NuGet package publishing test scripts for CI/CD validation. Update documentation paths and ensure all references are accurate.

devops/compose/docker-compose.gitea-test.yaml

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+# docker-compose.gitea-test.yaml - Local Gitea instance for testing package registry
+# Sprint: SPRINT_20251226_004_CICD
+#
+# Usage:
+#   docker compose -f devops/compose/docker-compose.gitea-test.yaml up -d
+#   # Wait for Gitea to start, then:
+#   # 1. Open http://localhost:3000 and complete initial setup
+#   # 2. Create a user and generate access token with package:write scope
+#   # 3. Test NuGet push:
+#   #    dotnet nuget push pkg.nupkg --source http://localhost:3000/api/packages/owner/nuget/index.json --api-key YOUR_TOKEN
+#
+# Cleanup:
+#   docker compose -f devops/compose/docker-compose.gitea-test.yaml down -v
+
+services:
+  gitea:
+    image: gitea/gitea:1.21
+    container_name: stellaops-gitea-test
+    environment:
+      - USER_UID=1000
+      - USER_GID=1000
+      # Enable package registry
+      - GITEA__packages__ENABLED=true
+      - GITEA__packages__CHUNKED_UPLOAD_PATH=/data/tmp/package-upload
+      # Enable NuGet
+      - GITEA__packages__NUGET_ENABLED=true
+      # Enable Container registry
+      - GITEA__packages__CONTAINER_ENABLED=true
+      # Database (SQLite for simplicity)
+      - GITEA__database__DB_TYPE=sqlite3
+      - GITEA__database__PATH=/data/gitea/gitea.db
+      # Server config
+      - GITEA__server__ROOT_URL=http://localhost:3000/
+      - GITEA__server__HTTP_PORT=3000
+      # Disable metrics/telemetry
+      - GITEA__metrics__ENABLED=false
+      # Session config
+      - GITEA__session__PROVIDER=memory
+      # Cache config
+      - GITEA__cache__ADAPTER=memory
+      # Log level
+      - GITEA__log__LEVEL=Warn
+    volumes:
+      - gitea-data:/data
+      - gitea-config:/etc/gitea
+    ports:
+      - "3000:3000"      # Web UI
+      - "3022:22"        # SSH (optional)
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3000/api/healthz"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 60s
+
+volumes:
+  gitea-data:
+    driver: local
+  gitea-config:
+    driver: local