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-dashboard/Cargo.toml

@@ -12,7 +12,7 @@ path = "../bin/main.rs"
 workspace = true
 
 [features]
-web = ["dioxus/web", "dioxus/router", "dioxus/fullstack", "dep:web-sys"]
+web = ["dioxus/web", "dioxus/router", "dioxus/fullstack", "dep:web-sys", "dep:gloo-timers"]
 server = [
     "dioxus/server",
     "dioxus/router",
@@ -43,6 +43,7 @@ thiserror = { workspace = true }
 # Web-only
 reqwest = { workspace = true, optional = true }
 web-sys = { version = "0.3", optional = true }
+gloo-timers = { version = "0.3", features = ["futures"], optional = true }
 
 # Server-only
 axum = { version = "0.8", optional = true }