fails to build examples/interactive-visualizer

[michaelfung]

I want to verify my installation, so I tried to run the example. But when following the instruction in the README file, at npm run build step:

mike@main-pc:~/github/pi-mcp-adapter/examples/interactive-visualizer$ npm run build

> interactive-visualizer-example@0.1.0 build
> node ./scripts/build.mjs

✘ [ERROR] Could not resolve "zod"

    ../../ui-stream-types.ts:1:18:
      1 │ import { z } from "zod";
        ╵                   ~~~~~

  You can mark the path "zod" as external to exclude it from the bundle, which will remove this
  error and leave the unresolved path in the bundle.

✘ [ERROR] Could not resolve "zod"

    ../../ui-stream-types.ts:1:18:
      1 │ import { z } from "zod";
        ╵                   ~~~~~

  You can mark the path "zod" as external to exclude it from the bundle, which will remove this
  error and leave the unresolved path in the bundle.

/home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:1467
  let error = new Error(text);
              ^

Error: Build failed with 1 error:
../../ui-stream-types.ts:1:18: ERROR: Could not resolve "zod"
    at failureErrorWithLog (/home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:1467:15)
    at /home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:926:25
    at /home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:878:52
    at buildResponseToResult (/home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:924:7)
    at /home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:951:16
    at responseCallbacks.<computed> (/home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:603:9)
    at handleIncomingPacket (/home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:658:12)
    at Socket.readFromStdout (/home/mike/github/pi-mcp-adapter/examples/interactive-visualizer/node_modules/esbuild/lib/main.js:581:7)
    at Socket.emit (node:events:509:28)
    at addChunk (node:internal/streams/readable:563:12) {
  errors: [Getter/Setter],
  warnings: [Getter/Setter]
}

Node.js v24.15.0