Give each user message its own copy, reply and time

Two prompts sent close together (as while a bot is still answering)
shared one row under their group: every copy button bunched beside the
last message's time. Each user message now has its own row, with its
copy button, a new Reply button (once it is saved) and its own time.
copyableMessages is gone with the shared row.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/pages/admin/bots/[bot_id]/(utils)/copyable-messages.test.ts

@@ -1,27 +0,0 @@
-import { describe, expect, test } from "bun:test";
-import type { BotMessageWithAttachments } from "@/src/types";
-import copyableMessages from "./copyable-messages";
-
-function message(text?: string): BotMessageWithAttachments {
-    return { id: 1, author: "user", text } as BotMessageWithAttachments;
-}
-
-describe("copyableMessages", () => {
-    test("keeps the messages that have text", () => {
-        const kept = copyableMessages({
-            messages: [message("hello"), message(undefined), message("hi")],
-        });
-
-        expect(kept.map((one) => one.text)).toEqual(["hello", "hi"]);
-    });
-
-    test("drops text that is only whitespace", () => {
-        expect(copyableMessages({ messages: [message("   ")] })).toEqual([]);
-    });
-
-    test("a group with no text has nothing to copy", () => {
-        expect(copyableMessages({ messages: [message(), message()] })).toEqual(
-            [],
-        );
-    });
-});

src/pages/admin/bots/[bot_id]/(utils)/copyable-messages.ts

@@ -1,14 +0,0 @@
-import type { BotMessageWithAttachments } from "@/src/types";
-
-/**
- * The messages of a group that can be copied: a file-only message has no
- * text, and its copy button renders nothing, so it would only leave a
- * gap in the row.
- */
-export default function copyableMessages({
-    messages,
-}: {
-    messages: BotMessageWithAttachments[];
-}): BotMessageWithAttachments[] {
-    return messages.filter((message) => Boolean(message.text?.trim()));
-}