feat: add browser bundle build for CDN usage

- add build.js — esbuild script that creates dist/cs2-masked-inspect.min.js
  as IIFE with Buffer polyfill bundled in (browser-compatible)
- add esbuild + buffer as devDependencies
- add npm run build script
- update release.yml: install deps, build bundle, upload .min.js as
  release asset via gh release upload before npm publish
- add dist/ to .gitignore

Also commit previously unstaged v1.1.0 changes:
- src/GenCode.js — generate, toGenCode, parseGenCode, genCodeFromLink
- tests/gen_codes.test.js — gen code tests
- index.js — export gen code functions

Author: vlydev

.github/workflows/release.yml

@@ -9,8 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     environment: npm
     permissions:
-      id-token: write  # required for npm trusted publishing (OIDC)
-      contents: read
+      id-token: write   # required for npm OIDC trusted publishing
+      contents: write   # required for uploading release assets
 
     steps:
       - uses: actions/checkout@v4
@@ -26,5 +26,16 @@ jobs:
           VERSION="${GITHUB_REF_NAME#v}"
           npm version "$VERSION" --no-git-tag-version
 
+      - name: Install dev dependencies
+        run: npm install
+
+      - name: Build browser bundle
+        run: npm run build
+
+      - name: Upload browser bundle to release
+        run: gh release upload "$GITHUB_REF_NAME" dist/cs2-masked-inspect.min.js --clobber
+        env:
+          GH_TOKEN: ${{ github.token }}
+
       - name: Publish to npm
         run: npm publish --access public --provenance

.gitignore

@@ -1,4 +1,5 @@
 node_modules/
+dist/
 .DS_Store
 *.log
 .idea/

build.js

@@ -0,0 +1,26 @@
+#!/usr/bin/env node
+'use strict';
+
+const { buildSync } = require('esbuild');
+const { mkdirSync }  = require('fs');
+
+mkdirSync('dist', { recursive: true });
+
+buildSync({
+  stdin: {
+    contents: `
+var Buffer = require('buffer').Buffer;
+globalThis.Buffer = Buffer;
+module.exports = require('./index.js');
+`,
+    resolveDir: __dirname,
+  },
+  bundle:     true,
+  format:     'iife',
+  globalName: 'Cs2MaskedInspect',
+  platform:   'browser',
+  outfile:    'dist/cs2-masked-inspect.min.js',
+  minify:     true,
+});
+
+console.log('Built dist/cs2-masked-inspect.min.js');

index.js

@@ -3,5 +3,6 @@
 const InspectLink    = require('./src/InspectLink');
 const ItemPreviewData = require('./src/ItemPreviewData');
 const Sticker        = require('./src/Sticker');
+const { toGenCode, generate, parseGenCode, genCodeFromLink, INSPECT_BASE } = require('./src/GenCode');
 
-module.exports = { InspectLink, ItemPreviewData, Sticker };
+module.exports = { InspectLink, ItemPreviewData, Sticker, toGenCode, generate, parseGenCode, genCodeFromLink, INSPECT_BASE };