chore(eslint): fix all 48 lint errors across 8 files

Remove dead code (normalizeAccidentals, countRows, unused imports), fix
useless escapes in CSS comments, scope Node/browser globals to the files
that need them, ignore tree-sitter DSL globals, and replace no-explicit-any
cast in element.test.ts with a type-safe approach.

Author: nelstrom

eslint.config.js

@@ -47,13 +47,22 @@ export default tseslint.config(
       ],
     },
   },
+  {
+    files: ['packages/*/.eleventy.js', 'packages/website/content/_data/**/*.js'],
+    languageOptions: { globals: globals.node },
+  },
+  {
+    files: ['packages/website/assets/js/**/*.js'],
+    languageOptions: { globals: globals.browser },
+  },
   {
     ignores: [
       '**/generated.js',
       '**/generated.d.ts',
       '**/dist/**',
       '**/_site/**',
       '**/node_modules/**',
+      'packages/tree-sitter-grammar/grammar.js',
     ],
   },
 );

packages/font-explorer/.eleventy.js

@@ -1,4 +1,4 @@
-export default function (eleventyConfig) {
+export default function (_eleventyConfig) {
   return {
     dir: {
       input: 'content',

packages/grigson-grille-harmonique-renderer/src/styles.ts

@@ -93,7 +93,7 @@ export function getGrilleStyles(typeface: string = 'sans'): string {
   transform: translate(-50%, -50%) rotate(var(--cg-diag-angle));
 }
 
-/* Full "\" anti-diagonal: top-left to bottom-right */
+/* Full "\\" anti-diagonal: top-left to bottom-right */
 [part~="line-anti"] {
   width: var(--cg-diag-len);
   transform: translate(-50%, -50%) rotate(calc(-1 * var(--cg-diag-angle)));
@@ -128,7 +128,7 @@ export function getGrilleStyles(typeface: string = 'sans'): string {
   transform: translate(-50%, -50%) rotate(var(--cg-diag-angle));
 }
 
-/* Half-length "\" lines — centered in their quadrant */
+/* Half-length "\\" lines — centered in their quadrant */
 [part~="line-anti-tl"] {
   width: calc(var(--cg-diag-len) / 2);
   top: 25%;

packages/grigson/src/element.test.ts

@@ -485,12 +485,12 @@ describe('GrigsonChart DSD adoption', () => {
   // parser does). Instead we add content to the existing shadow root and force
   // _hasDSDContent = true before connecting to simulate DSD adoption.
   const makeElementWithDSD = () => {
-    const el = document.createElement('grigson-chart') as any;
+    const el = document.createElement('grigson-chart');
     const sentinel = document.createElement('div');
     sentinel.setAttribute('data-dsd', 'true');
-    el.shadowRoot.appendChild(sentinel);
-    el._hasDSDContent = true;
-    return el as GrigsonChart;
+    el.shadowRoot!.appendChild(sentinel);
+    Object.assign(el, { _hasDSDContent: true });
+    return el as unknown as GrigsonChart;
   };
 
   it('adopts a DSD shadow root without re-rendering', async () => {

packages/grigson/src/renderers/html.test.ts

@@ -1048,10 +1048,6 @@ describe('getRendererFontFaceCSS', () => {
 // reflowSong and splitRows
 // ---------------------------------------------------------------------------
 
-function countRows(song: ReturnType<typeof parseSong>): number {
-  return song.sections.reduce((sum, s) => sum + s.rows.length, 0);
-}
-
 describe('reflowSong', () => {
   it('no-op when rows already have N bars each', () => {
     // 2 rows × 4 bars = 8 bars total → barsPerLine=4 gives same 2 rows

packages/grigson/src/renderers/html.ts

@@ -332,10 +332,6 @@ export function computeGlobalLayout(song: Song): GlobalLayout {
 // Chord rendering
 // ---------------------------------------------------------------------------
 
-function normalizeAccidentals(text: string): string {
-  return text.replace(/b/g, '♭').replace(/#/g, '♯');
-}
-
 type AccidentalsMode = 'unicode' | 'ascii';
 type SlashStyle = 'horizontal' | 'diagonal' | 'ascii';
 

packages/grigson/src/theory/harmonicAnalysis.ts

@@ -7,8 +7,6 @@ import type {
   Song,
   Section,
   Bar,
-  BeatCell,
-  ChordCell,
   DotCell,
   Row,
   CommentLine,