First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/d3/LICENSE

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+Copyright 2010-2023 Mike Bostock
+
+Permission to use, copy, modify, and/or distribute this software for any purpose
+with or without fee is hereby granted, provided that the above copyright notice
+and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+THIS SOFTWARE.

client/node_modules/d3/README.md

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+# D3: Data-Driven Documents
+
+<a href="https://d3js.org"><img src="./docs/public/logo.svg" width="256" height="256"></a>
+
+**D3** (or **D3.js**) is a free, open-source JavaScript library for visualizing data. Its low-level approach built on web standards offers unparalleled flexibility in authoring dynamic, data-driven graphics. For more than a decade D3 has powered groundbreaking and award-winning visualizations, become a foundational building block of higher-level chart libraries, and fostered a vibrant community of data practitioners around the world.
+
+## Resources
+
+* [Documentation](https://d3js.org)
+* [Examples](https://observablehq.com/@d3/gallery)
+* [Releases](https://github.com/d3/d3/releases)
+* [Getting help](https://d3js.org/community)

client/node_modules/d3/package.json

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+{
+  "name": "d3",
+  "version": "7.9.0",
+  "description": "Data-Driven Documents",
+  "homepage": "https://d3js.org",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/d3/d3.git"
+  },
+  "keywords": [
+    "d3",
+    "dom",
+    "visualization",
+    "svg",
+    "animation",
+    "canvas"
+  ],
+  "license": "ISC",
+  "author": {
+    "name": "Mike Bostock",
+    "url": "https://bost.ocks.org/mike"
+  },
+  "type": "module",
+  "files": [
+    "dist/d3.js",
+    "dist/d3.min.js",
+    "src/**/*.js"
+  ],
+  "module": "src/index.js",
+  "main": "src/index.js",
+  "jsdelivr": "dist/d3.min.js",
+  "unpkg": "dist/d3.min.js",
+  "exports": {
+    "umd": "./dist/d3.min.js",
+    "default": "./src/index.js"
+  },
+  "dependencies": {
+    "d3-array": "3",
+    "d3-axis": "3",
+    "d3-brush": "3",
+    "d3-chord": "3",
+    "d3-color": "3",
+    "d3-contour": "4",
+    "d3-delaunay": "6",
+    "d3-dispatch": "3",
+    "d3-drag": "3",
+    "d3-dsv": "3",
+    "d3-ease": "3",
+    "d3-fetch": "3",
+    "d3-force": "3",
+    "d3-format": "3",
+    "d3-geo": "3",
+    "d3-hierarchy": "3",
+    "d3-interpolate": "3",
+    "d3-path": "3",
+    "d3-polygon": "3",
+    "d3-quadtree": "3",
+    "d3-random": "3",
+    "d3-scale": "4",
+    "d3-scale-chromatic": "3",
+    "d3-selection": "3",
+    "d3-shape": "3",
+    "d3-time": "3",
+    "d3-time-format": "4",
+    "d3-timer": "3",
+    "d3-transition": "3",
+    "d3-zoom": "3"
+  },
+  "devDependencies": {
+    "@observablehq/plot": "^0.6.7",
+    "@observablehq/runtime": "^5.7.3",
+    "@rollup/plugin-json": "6",
+    "@rollup/plugin-node-resolve": "15",
+    "@rollup/plugin-terser": "^0.4.0",
+    "eslint": "8",
+    "mocha": "10",
+    "rollup": "3",
+    "topojson-client": "^3.1.0",
+    "vitepress": "^1.0.0-beta.2"
+  },
+  "scripts": {
+    "test": "mocha 'test/**/*-test.js' && eslint src test",
+    "prepublishOnly": "rm -rf dist && rollup -c",
+    "postpublish": "git push && git push --tags",
+    "docs:dev": "node --experimental-network-imports node_modules/vitepress/dist/node/cli.js dev docs",
+    "docs:build": "./prebuild.sh && node --experimental-network-imports node_modules/vitepress/dist/node/cli.js build docs",
+    "docs:preview": "vitepress preview docs"
+  },
+  "engines": {
+    "node": ">=12"
+  }
+}

client/node_modules/d3/src/index.js

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+export * from "d3-array";
+export * from "d3-axis";
+export * from "d3-brush";
+export * from "d3-chord";
+export * from "d3-color";
+export * from "d3-contour";
+export * from "d3-delaunay";
+export * from "d3-dispatch";
+export * from "d3-drag";
+export * from "d3-dsv";
+export * from "d3-ease";
+export * from "d3-fetch";
+export * from "d3-force";
+export * from "d3-format";
+export * from "d3-geo";
+export * from "d3-hierarchy";
+export * from "d3-interpolate";
+export * from "d3-path";
+export * from "d3-polygon";
+export * from "d3-quadtree";
+export * from "d3-random";
+export * from "d3-scale";
+export * from "d3-scale-chromatic";
+export * from "d3-selection";
+export * from "d3-shape";
+export * from "d3-time";
+export * from "d3-time-format";
+export * from "d3-timer";
+export * from "d3-transition";
+export * from "d3-zoom";