feat: preserve Herdr task counts

src/herdr.ts

@@ -3,7 +3,8 @@ import type { Task } from "./types.ts";
 import { orderedTreeRows } from "./ui.ts";
 
 const SOURCE = "pi-todo-herdr";
-const TOKEN = "task";
+const TASK_TOKEN = "task";
+const COUNT_TOKEN = "task_count";
 let reportSeq = Date.now() * 1000;
 
 function nextSeq(): number {
@@ -24,7 +25,7 @@ function hasDescendantWithStatus(task: Task, status: Task["status"], byId: Map<n
   return false;
 }
 
-export function currentTaskLabel(tasks: Task[]): string | null {
+export function currentTaskTokens(tasks: Task[]): Record<string, string | null> {
   const byId = new Map(tasks.map((task) => [task.id, task]));
   const ordered = orderedTreeRows(tasks).map(({ task }) => task);
   const inProgress = ordered.filter(
@@ -34,9 +35,17 @@ export function currentTaskLabel(tasks: Task[]): string | null {
     inProgress.length > 0
       ? inProgress
       : ordered.filter((task) => task.status === "blocked" && !hasDescendantWithStatus(task, "blocked", byId));
-  if (candidates.length === 0) return null;
-  const suffix = candidates.length > 1 ? ` +${candidates.length - 1}` : "";
-  return `#${candidates[0]!.id} ${candidates[0]!.name}${suffix}`;
+  return {
+    [TASK_TOKEN]: candidates.length > 0 ? `#${candidates[0]!.id} ${candidates[0]!.name}` : null,
+    [COUNT_TOKEN]: candidates.length > 1 ? `+${candidates.length - 1}` : null,
+  };
+}
+
+export function currentTaskLabel(tasks: Task[]): string | null {
+  const tokens = currentTaskTokens(tasks);
+  const task = tokens[TASK_TOKEN];
+  const count = tokens[COUNT_TOKEN];
+  return task ? `${task}${count ? ` ${count}` : ""}` : null;
 }
 
 function sendAttempt(request: unknown, timeoutMs: number): Promise<boolean> {
@@ -69,7 +78,7 @@ async function send(request: unknown): Promise<void> {
   await sendAttempt(request, 1500);
 }
 
-async function reportToken(value: string | null): Promise<void> {
+async function reportTokens(tokens: Record<string, string | null>): Promise<void> {
   if (!isHerdrEnvironment()) return;
   await send({
     id: `${SOURCE}:${Date.now()}:${Math.random().toString(36).slice(2)}`,
@@ -77,16 +86,16 @@ async function reportToken(value: string | null): Promise<void> {
     params: {
       pane_id: process.env.HERDR_PANE_ID,
       source: SOURCE,
-      tokens: { [TOKEN]: value },
+      tokens,
       seq: nextSeq(),
     },
   });
 }
 
 export function reportCurrentTask(tasks: Task[]): Promise<void> {
-  return reportToken(currentTaskLabel(tasks));
+  return reportTokens(currentTaskTokens(tasks));
 }
 
 export function clearCurrentTask(): Promise<void> {
-  return reportToken(null);
+  return reportTokens({ [TASK_TOKEN]: null, [COUNT_TOKEN]: null });
 }