Rewrite to modern ESM TypeScript with S38 MMR Points strategy

- Replace legacy ES5 (bower, gulp, AMD) with tsc 6 + nodenext ESM
- createRothko() factory API with extract (async) and extractSync
- S38 MMR Points strategy with perceptual optimizations:
  single-pass pixel sampling, TypedArray entropy bins, L-axis sorted
  density scan, hue LUT for minPointChroma, cached dominant OKLCH
- npm workspace: root owns devDeps, packages/rothko/ is published
- CI (typecheck + build) and release workflow (changesets + OIDC)
- prepack safety net for publish

Author: zeakd

.bowerrc

@@ -0,0 +1,11 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@3.1.3/schema.json",
+  "changelog": ["@changesets/changelog-github", { "repo": "zeakd/rothko.js" }],
+  "commit": false,
+  "fixed": [],
+  "linked": [],
+  "access": "public",
+  "baseBranch": "master",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

.changeset/README.md

@@ -0,0 +1,22 @@
+name: CI
+
+on:
+  pull_request:
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6.0.2
+      - uses: pnpm/action-setup@v5.0.0
+      - uses: actions/setup-node@v6.3.0
+        with:
+          node-version: 22
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm run typecheck
+      - run: pnpm run build

.changeset/config.json

@@ -0,0 +1,37 @@
+name: Release
+
+on:
+  push:
+    branches: [master]
+
+concurrency: ${{ github.workflow }}-${{ github.ref }}
+
+permissions:
+  contents: read
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+      id-token: write
+    steps:
+      - uses: actions/checkout@v6.0.2
+      - uses: pnpm/action-setup@v5.0.0
+      - uses: actions/setup-node@v6.3.0
+        with:
+          node-version: 22
+          registry-url: https://registry.npmjs.org
+          cache: pnpm
+      - run: pnpm install --frozen-lockfile
+      - run: pnpm run build
+
+      - name: Create Release Pull Request or Publish to npm
+        id: changesets
+        uses: changesets/action@v1.7.0
+        with:
+          publish: pnpm changeset publish
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_CONFIG_PROVENANCE: 'true'

.changeset/rewrite-esm-s38.md

@@ -1,28 +1,12 @@
-# Logs
-logs
+node_modules
+dist
+_legacy
+new
+lab
+dev
+serve.ts
+ecosystem.config.cjs
 *.log
-
-# Runtime data
-pids
 *.pid
 *.seed
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
-# Coverage directory used by tools like istanbul
-coverage
-
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (http://nodejs.org/api/addons.html)
-build/Release
-
-# Dependency directory
-# https://www.npmjs.org/doc/misc/npm-faq.html#should-i-check-my-node_modules-folder-into-git
-node_modules
-bower_components
+.DS_Store