Demo background agent (#4409)

Co-authored-by: Bryan Morgan <bryanmorgan@google.com>

package-lock.json

@@ -916,6 +916,10 @@
       "resolved": "packages/core",
       "link": true
     },
+    "node_modules/@google/gemini-cli-examples": {
+      "resolved": "packages/examples",
+      "link": true
+    },
     "node_modules/@google/genai": {
       "version": "1.9.0",
       "resolved": "https://registry.npmjs.org/@google/genai/-/genai-1.9.0.tgz",
@@ -5657,6 +5661,19 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/get-tsconfig": {
+      "version": "4.10.1",
+      "resolved": "https://registry.npmjs.org/get-tsconfig/-/get-tsconfig-4.10.1.tgz",
+      "integrity": "sha512-auHyJ4AgMz7vgS8Hp3N6HXSmlMdUyhSUrfBF16w153rxtLIEOE+HGqaBppczZvnHLqQJfiHotCYpNhl0lUROFQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "resolve-pkg-maps": "^1.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/privatenumber/get-tsconfig?sponsor=1"
+      }
+    },
     "node_modules/glob": {
       "version": "10.4.5",
       "resolved": "https://registry.npmjs.org/glob/-/glob-10.4.5.tgz",
@@ -9190,6 +9207,16 @@
         "node": ">=4"
       }
     },
+    "node_modules/resolve-pkg-maps": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/resolve-pkg-maps/-/resolve-pkg-maps-1.0.0.tgz",
+      "integrity": "sha512-seS2Tj26TBVOC2NIc2rOe2y2ZO7efxITtLZcGSOnHHNOQ7CkiUBfw0Iw2ck6xkIhPwLhKNLS8BO+hEpngQlqzw==",
+      "dev": true,
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/privatenumber/resolve-pkg-maps?sponsor=1"
+      }
+    },
     "node_modules/restore-cursor": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-4.0.0.tgz",
@@ -10490,6 +10517,26 @@
       "dev": true,
       "license": "0BSD"
     },
+    "node_modules/tsx": {
+      "version": "4.20.3",
+      "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.20.3.tgz",
+      "integrity": "sha512-qjbnuR9Tr+FJOMBqJCW5ehvIo/buZq7vH7qD7JziU98h6l3qGy0a/yPFjwO+y0/T7GFpNgNAvEcPPVfyT8rrPQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "esbuild": "~0.25.0",
+        "get-tsconfig": "^4.7.5"
+      },
+      "bin": {
+        "tsx": "dist/cli.mjs"
+      },
+      "engines": {
+        "node": ">=18.0.0"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.3"
+      }
+    },
     "node_modules/type-check": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
@@ -11860,6 +11907,17 @@
       "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
       "license": "MIT"
     },
+    "packages/examples": {
+      "name": "@google/gemini-cli-examples",
+      "version": "0.1.0",
+      "dependencies": {
+        "@modelcontextprotocol/sdk": "1.15.1",
+        "zod": "^3.23.8"
+      },
+      "devDependencies": {
+        "tsx": "^4.16.2"
+      }
+    },
     "packages/vscode-ide-companion": {
       "name": "gemini-cli-vscode-ide-companion",
       "version": "0.0.1",