Let a user stop a bot, and say the app is still alpha

The thinking row and the header menu both carry Stop while a bot has work
open for the user anywhere: every pending or processing job of that bot in
their conversations is failed as stopped, its task closed, a Stopped step
recorded and one closing message posted per session, so the thread stops
waiting and the bot goes idle. The handler running the job is aborted from
this process through a registry, so a job stuck waiting on a model stops at
once instead of on its next heartbeat, and a late face change after the
abort is dropped.

The release stage is now said in the app too: Settings > General reports
"Cobble v0.1.5 (alpha)" next to development, and the README and RELEASING.md
say what alpha means for installs.

src/pages/admin/bots/[bot_id]/(partials)/bot-thinking-row.tsx

@@ -2,15 +2,11 @@ import Row from "@moduletrace/twui/layout/Row";
 import Span from "@moduletrace/twui/layout/Span";
 import Stack from "@moduletrace/twui/layout/Stack";
 import BotAvatar from "@/src/components/general/bot-avatar";
-import type { BotFace } from "@/src/dict/bot-dict";
 import botStoneProps from "@/src/utils/bot-stone-props";
-import {
-    BotComputerBusyStatusLine,
-    BotGettingMessageStatusLine,
-    BotReplyJobTitle,
-    BotWaitingStatusLine,
-} from "@/src/dict/bot-queue-dict";
+import { BotGettingMessageStatusLine } from "@/src/dict/bot-queue-dict";
 import type { BotWithLastMessage } from "@/src/types";
+import botBusyState from "../(utils)/bot-busy-state";
+import StopBotButton from "./stop-bot-button";
 
 type Props = {
     bot: BotWithLastMessage;
@@ -45,7 +41,7 @@ type Props = {
  * reply shows from the thread alone: every user message queues one, so while
  * the user has the last word a reply is due here, even while the bot works
  * elsewhere. Only the waits (for a model, for its computer) come from the
- * face.
+ * face. While it shows, a stop button pulls the plug on the bot's work.
  */
 export default function BotThinkingRow({
     bot,
@@ -56,17 +52,14 @@ export default function BotThinkingRow({
     has_task,
 }: Props) {
     const name = bot.name || "The bot";
-    const asleep = bot.face == "asleep";
-    const waiting_model = asleep && bot.status_line == BotWaitingStatusLine && Boolean(awaiting_reply || has_task);
-    const waiting_computer =
-        asleep && bot.status_line == BotComputerBusyStatusLine && Boolean(has_task) && !awaiting_reply;
-    const waiting = waiting_model || waiting_computer;
-    const getting = Boolean(receiving) && Boolean(awaiting_reply);
-    const thinking = Boolean(awaiting_reply) && !waiting && !getting;
-    const working =
-        !awaiting_reply && bot.face == "working" && bot.status_line != BotReplyJobTitle && Boolean(has_task);
+    const { waiting, getting, thinking, working, busy, stoppable } = botBusyState({
+        bot,
+        awaiting_reply,
+        receiving,
+        has_task,
+    });
 
-    if (!getting && !thinking && !working && !waiting) return null;
+    if (!busy) return null;
 
     const label = getting
         ? `${name} is ${BotGettingMessageStatusLine.toLowerCase()}…`
@@ -95,6 +88,7 @@ export default function BotThinkingRow({
                     </Span>
                 ) : null}
             </Stack>
+            <StopBotButton bot_name={bot.name} disabled={!stoppable} />
         </Row>
     );
 }