chore(lint): apply eslint auto-fixes across the .tsx backlog

Mechanical --fix output over the newly linted .tsx files (indent,
arrow-parens, comma-dangle, member-delimiter-style, unnecessary type
assertions), plus the three generic-arrow test hooks converted to
function declarations up front: the comma-dangle fixer strips the
<T,> disambiguation comma and turns them into parse errors otherwise.

packages/client/ui-primitives/tests/markdown.spec.tsx

@@ -153,7 +153,7 @@ describe('JsonBlock', () => {
   it('truncates beyond the size cap with a suffix note', () => {
     const big = 'x'.repeat(30_000)
     const { container } = render(<JsonBlock label="x" payload={big} defaultOpen />)
-    const body = container.querySelector('pre')!.textContent!
+    const body = container.querySelector('pre')!.textContent
     expect(body.length).toBeLessThan(30_000)
     expect(body).toContain('截断')
   })