chore: move biome config to biome.jsonc and baseline existing violations

biome.json is strict JSON; the jsonc extension allows the annotations
on the baseline entries. Rules that currently fail are downgraded to
warn with a note against issue #421 — restore each to error as its
occurrences are fixed. files.experimentalScannerIgnores keeps the
scanner out of .worktrees/ so a local worktree's own config can't
conflict with the root one.

Also fixes the handful of auto-fixable errors (unused imports in docs/
and landing/, @ts-expect-error over @ts-ignore). bun run lint is now
green: 0 errors, 96 warnings visible as debt.

app/index.html

@@ -6,7 +6,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>voicebox</title>
     <script>
-      (function () {
+      (() => {
         try {
           var theme = 'system';
           var raw = localStorage.getItem('voicebox-ui');

biome.jsonc

@@ -5,6 +5,11 @@
     "clientKind": "git",
     "useIgnoreFile": true
   },
+  "files": {
+    // Local git worktrees carry their own root biome.json; keep the scanner
+    // out so they don't conflict with this one.
+    "experimentalScannerIgnores": [".worktrees"]
+  },
   "formatter": {
     "enabled": true,
     "indentStyle": "space",
@@ -16,18 +21,35 @@
     "rules": {
       "recommended": true,
       "a11y": {
-        "useButtonType": "warn"
+        "useButtonType": "warn",
+        // Baseline (issue #421): interactive-div patterns in the dictation
+        // pill and chord picker.
+        "noStaticElementInteractions": "warn",
+        "useFocusableInteractive": "warn",
+        "useSemanticElements": "warn",
+        "useAriaPropsSupportedByRole": "warn",
+        "useKeyWithClickEvents": "warn",
+        "noLabelWithoutControl": "warn",
+        "useAriaPropsForRole": "warn"
       },
       "correctness": {
         "noUnusedVariables": "warn",
         "noUnusedImports": "error",
         "useExhaustiveDependencies": "warn",
-        "useHookAtTopLevel": "error"
+        "useHookAtTopLevel": "error",
+        // Existing-violation baseline (issue #421); restore to error as
+        // occurrences are fixed. Counts as of 2026-07-26.
+        "noInnerDeclarations": "warn"
       },
       "suspicious": {
         "noDoubleEquals": "error",
         "noExplicitAny": "warn",
-        "noUnknownAtRules": "off"
+        "noUnknownAtRules": "off",
+        // Baseline (issue #421): 16 array-index keys, 2 iterable-callback
+        // returns, 1 then-property.
+        "noArrayIndexKey": "warn",
+        "useIterableCallbackReturn": "warn",
+        "noThenProperty": "warn"
       },
       "style": {
         "useFilenamingConvention": "off",

docs/app/[[...slug]]/page.tsx

@@ -3,7 +3,6 @@ import { DocsBody, DocsDescription, DocsPage, DocsTitle } from 'fumadocs-ui/page
 import type { Metadata } from 'next';
 import { notFound } from 'next/navigation';
 import { MarkdownCopyButton, ViewOptionsPopover } from '@/components/ai/page-actions';
-import { APIPage } from '@/components/api-page';
 import { getPageImage, source } from '@/lib/source';
 import { getMDXComponents } from '@/mdx-components';
 

landing/src/app/token/page.tsx

@@ -1,10 +1,7 @@
 import {
-	ArrowUpRight,
 	Check,
 	Cloud,
-	Flame,
 	Heart,
-	Lock,
 	Rocket,
 	ShieldCheck,
 } from "lucide-react";
@@ -14,8 +11,6 @@ import {Navbar} from "@/components/Navbar";
 import {TokenSection} from "@/components/TokenSection";
 import {TokenStatsSection} from "@/components/TokenStats";
 import {
-	TOKEN_PROOFS,
-	TOKEN_SOLSCAN_URL,
 	TOKEN_TICKER,
 } from "@/lib/constants";
 

landing/src/components/SupportedModels.tsx

@@ -6,7 +6,6 @@ import {
   Languages,
   type LucideIcon,
   MessageSquare,
-  Mic2,
   SlidersHorizontal,
   Sparkles,
   Volume2,

landing/src/lib/token-stats.ts

@@ -9,7 +9,6 @@
 //     for price — nothing is asserted that can't be verified on Solscan.
 
 import {
-  TOKEN_BURN_ADDRESS,
   TOKEN_CONTRACT_ADDRESS,
   TOKEN_CREATOR_ADDRESS,
   TOKEN_DEV_WALLETS,