feat: collapsible tool output (collapsed by default like thinking)

Tool calls and results now use the same DaisyUI collapse pattern as
thinking blocks — collapsed by default, click to expand. Each card
shows the tool name + a wrench icon in the title; expanding reveals
the input/output with overflow-x-auto for long lines and max-h-96
overflow-y-auto for very long output.

Batched tool calls: each entry is its own collapse card (was a DaisyUI
list). Pending results show a spinner in the title. Errors show a red
badge.

686 tests green.

1 files changed, 3 insertions, 4 deletions

diff --git a/src/features/chat/ui.test.ts b/src/features/chat/ui.test.ts
index 2891e5b..b8b3193 100644
--- a/src/features/chat/ui.test.ts
+++ b/src/features/chat/ui.test.ts
@@ -242,10 +242,9 @@ describe("ChatView", () => {
 
 		const { container } = render(ChatView, { props: { chunks } });
 
-		// One DaisyUI list with two rows (one per call), not separate cards.
-		const lists = container.querySelectorAll("ul.list");
-		expect(lists).toHaveLength(1);
-		expect(container.querySelectorAll("ul.list > li.list-row")).toHaveLength(2);
+		// Batched calls render as collapsible cards (one per call), not a list.
+		const collapses = container.querySelectorAll(".collapse");
+		expect(collapses).toHaveLength(2);
 
 		// Both call names + the available result are shown; the result is absorbed
 		// (no standalone tool-result card).