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>

compliance-agent/src/api/handlers/mod.rs

@@ -1,3 +1,6 @@
+pub mod dast;
+pub mod graph;
+
 use std::sync::Arc;
 
 #[allow(unused_imports)]
@@ -410,8 +413,11 @@ async fn collect_cursor_async<T: serde::de::DeserializeOwned + Unpin + Send>(
 ) -> Vec<T> {
     use futures_util::StreamExt;
     let mut items = Vec::new();
-    while let Some(Ok(item)) = cursor.next().await {
-        items.push(item);
+    while let Some(result) = cursor.next().await {
+        match result {
+            Ok(item) => items.push(item),
+            Err(e) => tracing::warn!("Failed to deserialize document: {e}"),
+        }
     }
     items
 }