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-conversation/tests/coverage-tails.spec.tsx

@@ -83,7 +83,7 @@ describe('tails', () => {
       byId: { [sid]: { id: sid, title: 'r', displayTitle: 'r', running: false, blank: false, updatedAt: 0 } },
       current: undefined,
       phase: 'ready',
-    } as SessionListState)
+    })
     const props = (block: RunningToolCall | ToolResultNode) => ({
       callId: 'c1', toolName: 'bash', block, openDetails: vi.fn(),
       sessionId: sid, useSessions: bindSnapshotSelector(list),