feat(FN-3082): restructure dependency graph plugin with modular architectur

Implements a modular dependency graph feature for the Fusion dashboard plugin, replacing the monolithic `DependencyGraphView` component with a factored architecture: graph types and filtering (Step 1), a data hook (Step 2), auto-layout engine (Step 3), SVG edge rendering (Step 4), an interaction hoo

Fusion-Task-Id: FN-3082

plugins/fusion-plugin-dependency-graph/vitest.config.ts

@@ -9,6 +9,7 @@ export default defineConfig({
     alias: {
       "@fusion/core": fileURLToPath(new URL("../../packages/core/src/index.ts", import.meta.url)),
       "@fusion/plugin-sdk": fileURLToPath(new URL("../../packages/plugin-sdk/src/index.ts", import.meta.url)),
+      "@fusion/dashboard": fileURLToPath(new URL("../../packages/dashboard", import.meta.url)),
     },
   },
   test: {