chore: remove stale backup file

biome.json.bak

@@ -1,58 +0,0 @@
-{
-  "$schema": "https://biomejs.dev/schemas/2.5.3/schema.json",
-  "assist": { "actions": { "source": { "organizeImports": "on" } } },
-  "linter": {
-    "enabled": true,
-    "rules": {
-      "preset": "recommended",
-      "suspicious": {
-        "noConsole": "off",
-        "noExplicitAny": "warn"
-      },
-      "correctness": {
-        "noUnusedVariables": "error"
-      },
-      "style": {
-        "noNonNullAssertion": "off"
-      },
-      "complexity": {
-        "noForEach": "off",
-        "noThisInStatic": "off"
-      }
-    }
-  },
-  "formatter": {
-    "enabled": true,
-    "formatWithErrors": false,
-    "indentStyle": "space",
-    "indentWidth": 2,
-    "lineWidth": 100,
-    "lineEnding": "lf"
-  },
-  "javascript": {
-    "jsxRuntime": "transparent",
-    "formatter": {
-      "quoteStyle": "single",
-      "jsxQuoteStyle": "double",
-      "trailingCommas": "all",
-      "semicolons": "always",
-      "arrowParentheses": "always"
-    }
-  },
-  "files": {
-    "ignoreUnknown": false,
-    "includes": [
-      "**",
-      "!**/.opencode",
-      "!**/dist",
-      "!**/out",
-      "!**/build",
-      "!**/node_modules",
-      "!**/target",
-      "!**/coverage",
-      "!**/*.env",
-      "!**/*.env.*",
-      "!**/apps/react/src/routeTree.gen.ts"
-    ]
-  }
-}