fix: migrate biome.json config to v2.x

[AaronFeledy]

The CI workflow installs latest Biome (2.4.4) but the config was written for 1.9.4. Several keys were renamed/removed in the 2.x migration.

Changes:

• Updated $schema to 2.4.4
• Replaced organizeImports with disabled assist (organize imports was causing CI failures on existing code)
• Migrated files.ignore/linter.ignore to includes with negation patterns
• Disabled new rules introduced in Biome 2.x that flag existing code (noUnusedImports, noUnusedVariables, useButtonType, etc.)
• Enabled css.parser.tailwindDirectives and disabled noUnknownAtRules for Tailwind CSS compatibility
• Auto-formatted package.json to match Biome 2.x formatter output

---

Note

Low Risk
Changes are limited to lint/format tooling configuration; main risk is CI or local lint behavior changing (e.g., newly disabled rules or different file include patterns).

Overview
Migrates biome.json to the Biome 2.4.4 schema, replacing deprecated config keys (e.g., organizeImports -> disabled assist) and switching ignore lists to includes patterns (while continuing to exclude public/).

Disables several Biome 2.x rules that would flag existing code (unused imports/vars/params, exhaustive deps, some a11y/CSS rules) and tweaks CSS parsing for Tailwind via css.parser.tailwindDirectives.

Applies formatter output changes to package.json (array formatting only).

^{Written by Cursor Bugbot for commit 1caf5a1. This will update automatically on new commits. Configure here.}

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

Bugbot Autofix prepared a fix for the issue found in the latest run.

• ✅ Fixed: useParseIntRadix placed in wrong rule category
  • Removed useParseIntRadix from the correctness group since it belongs to nursery and nursery rules aren't enabled by recommended: true anyway.

Or push these changes by commenting:

@cursor push 9feb8dac7e

Preview (9feb8dac7e)

diff --git a/biome.json b/biome.json
--- a/biome.json
+++ b/biome.json
@@ -26,7 +26,6 @@
         "noUnusedImports": "off",
         "noUnusedVariables": "off",
         "noUnusedFunctionParameters": "off",
-        "useParseIntRadix": "off",
         "useExhaustiveDependencies": "off"
       },
       "suspicious": {

[AaronFeledy]

@cursor push 9feb8da