audit work, fixed StellaOps.sln warnings/errors, fixed tests, sprints work, new advisories

devops/docker/timeline.Dockerfile

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+# StellaOps Timeline Service
+# Multi-stage build for optimized production image
+
+FROM mcr.microsoft.com/dotnet/sdk:10.0-preview AS build
+WORKDIR /src
+
+# Copy solution and project files for restore
+COPY ["src/Timeline/StellaOps.Timeline.WebService/StellaOps.Timeline.WebService.csproj", "src/Timeline/StellaOps.Timeline.WebService/"]
+COPY ["src/Timeline/__Libraries/StellaOps.Timeline.Core/StellaOps.Timeline.Core.csproj", "src/Timeline/__Libraries/StellaOps.Timeline.Core/"]
+COPY ["src/__Libraries/StellaOps.Eventing/StellaOps.Eventing.csproj", "src/__Libraries/StellaOps.Eventing/"]
+COPY ["src/__Libraries/StellaOps.HybridLogicalClock/StellaOps.HybridLogicalClock.csproj", "src/__Libraries/StellaOps.HybridLogicalClock/"]
+COPY ["src/__Libraries/StellaOps.Microservice/StellaOps.Microservice.csproj", "src/__Libraries/StellaOps.Microservice/"]
+COPY ["src/__Libraries/StellaOps.Replay.Core/StellaOps.Replay.Core.csproj", "src/__Libraries/StellaOps.Replay.Core/"]
+COPY ["nuget.config", "."]
+COPY ["Directory.Build.props", "."]
+COPY ["Directory.Packages.props", "."]
+
+# Restore dependencies
+RUN dotnet restore "src/Timeline/StellaOps.Timeline.WebService/StellaOps.Timeline.WebService.csproj"
+
+# Copy source code
+COPY ["src/", "src/"]
+
+# Build
+WORKDIR /src/src/Timeline/StellaOps.Timeline.WebService
+RUN dotnet build -c Release -o /app/build --no-restore
+
+# Publish
+FROM build AS publish
+RUN dotnet publish -c Release -o /app/publish --no-build /p:UseAppHost=false
+
+# Runtime image
+FROM mcr.microsoft.com/dotnet/aspnet:10.0-preview AS runtime
+WORKDIR /app
+
+# Create non-root user
+RUN addgroup --system --gid 1000 stellaops && \
+    adduser --system --uid 1000 --ingroup stellaops stellaops
+
+# Copy published files
+COPY --from=publish /app/publish .
+
+# Set ownership
+RUN chown -R stellaops:stellaops /app
+
+# Switch to non-root user
+USER stellaops
+
+# Environment configuration
+ENV ASPNETCORE_URLS=http://+:8080 \
+    ASPNETCORE_ENVIRONMENT=Production \
+    DOTNET_EnableDiagnostics=0 \
+    DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=false
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8080/health || exit 1
+
+# Expose port
+EXPOSE 8080
+
+# Entry point
+ENTRYPOINT ["dotnet", "StellaOps.Timeline.WebService.dll"]