Add DAST, graph modules, toast notifications, and dashboard enhancements

Add DAST scanning and code knowledge graph features across the stack:
- compliance-dast and compliance-graph workspace crates
- Agent API handlers and routes for DAST targets/scans and graph builds
- Core models and traits for DAST and graph domains
- Dashboard pages for DAST targets/findings/overview and graph explorer/impact
- Toast notification system with auto-dismiss for async action feedback
- Button click animations and disabled states for better UX

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Dockerfile.dashboard

@@ -4,15 +4,15 @@ RUN cargo install dioxus-cli --version 0.7.3
 
 WORKDIR /app
 COPY . .
-RUN dx build --release --features server --platform web
+RUN dx build --release --package compliance-dashboard
 
 FROM debian:bookworm-slim
 RUN apt-get update && apt-get install -y ca-certificates libssl3 && rm -rf /var/lib/apt/lists/*
 
-COPY --from=builder /app/target/release/compliance-dashboard /usr/local/bin/compliance-dashboard
+WORKDIR /app
+COPY --from=builder /app/target/dx/compliance-dashboard/release/web/compliance-dashboard /app/compliance-dashboard
 COPY --from=builder /app/target/dx/compliance-dashboard/release/web/public /app/public
 
 EXPOSE 8080
 
-WORKDIR /app
-ENTRYPOINT ["compliance-dashboard"]
+ENTRYPOINT ["./compliance-dashboard"]