feat(FN-3079): add plugin dashboard views and dependency graph plugin

- Add plugin dashboard view registration and hosting across core, dashboard routes, and plugin SDK exports
- Integrate plugin-provided views into app navigation, mobile/header UI, and view state hooks with coverage
- Add fusion-plugin-dependency-graph example plugin with persisted storage, dashboard view UI, and manifest wiring
- Update plugin authoring and architecture docs for dashboard view extension points
- Add a changeset for @runfusion/fusion covering plugin dashboard view support

Fusion-Task-Id: FN-3079

plugins/fusion-plugin-dependency-graph/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "@fusion-plugin-examples/dependency-graph",
+  "version": "0.1.0",
+  "type": "module",
+  "description": "Dependency graph dashboard view plugin for Fusion",
+  "private": true,
+  "exports": {
+    ".": {
+      "types": "./src/index.ts",
+      "import": "./src/index.ts"
+    },
+    "./dashboard-view": {
+      "types": "./src/DependencyGraphView.tsx",
+      "import": "./src/DependencyGraphView.tsx"
+    }
+  },
+  "scripts": {
+    "build": "tsc",
+    "test": "vitest run --silent=passed-only --reporter=dot"
+  },
+  "dependencies": {
+    "@fusion/plugin-sdk": "workspace:*",
+    "@fusion/core": "workspace:*"
+  },
+  "devDependencies": {
+    "@types/node": "^25.5.2",
+    "@types/react": "^19.0.0",
+    "typescript": "^5.7.0",
+    "vitest": "^3.2.4",
+    "react": "^19.0.0"
+  }
+}