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/cli/src/commands/agent/run.ts

@@ -325,7 +325,7 @@ export async function runRunCommand(
           };
         } catch (err) {
           const message = err instanceof Error ? err.message : String(err);
-          throw new Error(`Failed to read image ${imagePath}: ${message}`);
+          throw new Error(`Failed to read image ${imagePath}: ${message}`, { cause: err });
         }
       });
     }

packages/cli/src/commands/daemon/status.ts

@@ -193,7 +193,7 @@ async function checkProviderBinaries(): Promise<ProviderBinaryStatus[]> {
   const results = await Promise.all(
     PROVIDER_BINARIES.map(async ({ label, binary }) => {
       const result = await checkProviderBinary(binary);
-      return { label, ...result };
+      return Object.assign({ label }, result);
     }),
   );
   return results;

packages/cli/tests/helpers/test-daemon.ts

@@ -315,6 +315,7 @@ export async function startTestDaemon(options?: {
     const message = err instanceof Error ? err.message : String(err);
     throw new Error(
       `Failed to start test daemon: ${message}\nStdout: ${formatOutputCapture(stdout)}\nStderr: ${formatOutputCapture(stderr)}`,
+      { cause: err },
     );
   }