Q5: give chat wakes timed, attributed history apart from the new ask

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/main/services/chat-wake-context.ts

@@ -0,0 +1,54 @@
+import type { DatabaseSync } from "node:sqlite";
+import type { ChatContextBlock } from "./task-prompts";
+
+interface ThreadMessageRow {
+  body_md: string;
+  created_at: string;
+  edited_at: string | null;
+  sender_type: string;
+  sender_id: string | null;
+  sender_name: string;
+  sender_role: string | null;
+}
+
+/** The thread a chat-wake run answers, split at the agent's last reply. */
+export function loadChatWakeContext(db: DatabaseSync, orgId: string, agentId: string, secretScopeJson: string): ChatContextBlock | null {
+  const scope = JSON.parse(secretScopeJson) as { sourceThreadId?: string };
+  if (!scope.sourceThreadId) return null;
+  const thread = db.prepare("select space_id from chat_threads where id = ? and org_id = ?")
+    .get(scope.sourceThreadId, orgId) as { space_id: string } | undefined;
+  if (!thread) throw new Error(`Chat wake thread ${scope.sourceThreadId} no longer exists.`);
+  const messages = db.prepare(`
+    select m.body_md, m.created_at, m.edited_at, m.sender_type, m.sender_id,
+           coalesce(a.name, e.display_name, m.sender_type) as sender_name,
+           coalesce(a.role, e.role) as sender_role
+    from chat_messages m
+    left join agents a on a.id = m.sender_id and m.sender_type = 'agent'
+    left join employees e on e.id = m.sender_id and m.sender_type = 'employee'
+    where m.thread_id = ? and m.org_id = ?
+    order by m.created_at asc
+    limit 20
+  `).all(scope.sourceThreadId, orgId) as unknown as ThreadMessageRow[];
+  if (messages.length === 0) return null;
+  const isOwn = (m: ThreadMessageRow) => m.sender_type === "agent" && m.sender_id === agentId;
+  const ownReplies = messages.filter(isOwn);
+  const lastReplyAt = ownReplies.length > 0 ? ownReplies[ownReplies.length - 1].created_at : "";
+  const isFresh = (m: ThreadMessageRow) =>
+    !isOwn(m) && (m.created_at > lastReplyAt || (m.edited_at !== null && m.edited_at > lastReplyAt));
+  return {
+    threadId: scope.sourceThreadId,
+    spaceId: thread.space_id,
+    history: messages.filter((m) => !isFresh(m)).map(formatMessage).join("\n"),
+    fresh: messages.filter(isFresh).map(formatMessage).join("\n"),
+  };
+}
+
+function formatMessage(m: ThreadMessageRow): string {
+  const who = m.sender_role ? `${m.sender_name} (${m.sender_type}, ${m.sender_role})` : `${m.sender_name} (${m.sender_type})`;
+  const edited = m.edited_at ? ` (edited ${utcMinute(m.edited_at)})` : "";
+  return `[${utcMinute(m.created_at)}] ${who}${edited}: ${m.body_md}`;
+}
+
+function utcMinute(iso: string): string {
+  return `${iso.slice(0, 10)} ${iso.slice(11, 16)} UTC`;
+}