chore: apply oxlint autofix (safe level)

Auto-fixed 102 warnings (6040 → 5938) across 57 files. Main categories:
- preserve-caught-error: add { cause: error } to re-thrown errors
- unicorn/no-array-reverse: .reverse() → .toReversed()
- unicorn/no-useless-fallback-in-spread: drop unnecessary ?? {} in spreads
- oxc/no-map-spread: rewrite object spread in .map() to Object.assign
- react-hooks/exhaustive-deps: trim module-level constants from dep arrays

Ran npm run format after to clean up whitespace from lint mutations.

.oxlintrc.json

@@ -1,14 +1,6 @@
 {
   "$schema": "./node_modules/oxlint/configuration_schema.json",
-  "plugins": [
-    "react",
-    "react-perf",
-    "unicorn",
-    "typescript",
-    "oxc",
-    "import",
-    "promise"
-  ],
+  "plugins": ["react", "react-perf", "unicorn", "typescript", "oxc", "import", "promise"],
   "categories": {
     "correctness": "warn",
     "suspicious": "warn",