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.

packages/server/src/terminal/terminal-manager.ts

@@ -172,9 +172,7 @@ export function createTerminalManager(): TerminalManager {
       const defaultName = `Terminal ${terminals.length + 1}`;
       const inheritedEnv = resolveDefaultEnvForCwd(options.cwd);
       const mergedEnv =
-        inheritedEnv || options.env
-          ? { ...(inheritedEnv ?? {}), ...(options.env ?? {}) }
-          : undefined;
+        inheritedEnv || options.env ? { ...inheritedEnv, ...options.env } : undefined;
       const session = registerSession(
         await createTerminal({
           ...(options.id ? { id: options.id } : {}),