worker: track work as natural task steps

web/workspace/src/lib/workspace/console/tasks.test.ts

@@ -53,7 +53,7 @@ Deno.test("TaskCreate and TaskUpdate mirror the active TUI task store", () => {
   assert(counts.inprogress === 1, "one task should be in progress");
 });
 
-Deno.test("completed and deleted tasks remain in the TUI-style store", () => {
+Deno.test("completed tasks remain visible until explicitly deleted", () => {
   let state = emptyConsoleTaskState();
   for (const subject of ["complete", "delete"]) {
     state = applyTaskToolCall(
@@ -72,14 +72,11 @@ Deno.test("completed and deleted tasks remain in the TUI-style store", () => {
     "TaskUpdate",
     JSON.stringify({ taskid: 2, status: "deleted" }),
   );
-  assert(
-    state.tasks.length === 2,
-    "the full TaskStore should retain inactive tasks",
-  );
+  assert(state.tasks.length === 1, "only deleted tasks should be forgotten");
   const counts = taskCounts(state.tasks);
   assert(counts.completed === 1, "completed tasks should remain counted");
-  assert(counts.deleted === 1, "deleted tasks should remain counted");
-  assert(counts.active === 0, "inactive tasks should not be shown as active");
+  assert(counts.deleted === 0, "deleted tasks should be forgotten");
+  assert(counts.active === 0, "completed tasks should not be shown as active");
 });
 
 Deno.test("session TaskStore snapshot replaces stale state and advances ids", () => {
@@ -102,13 +99,13 @@ TaskStore: 1 active task(s) (pending: 0, inprogress: 1)
 \`\`\`
 `;
   state = applyTaskSnapshotText(state, snapshot);
+  assert(state.tasks.length === 2, "snapshot should restore retained tasks");
+  assert(state.tasks[0].taskid === 4, "the completed task should be restored");
+  assert(state.tasks[1].taskid === 7, "the active task should be restored");
   assert(
-    state.tasks.length === 2,
-    "snapshot should restore the full TaskStore",
+    state.nextTaskId === 8,
+    "next id should follow the highest retained task id",
   );
-  assert(state.tasks[0].taskid === 4, "completed tasks should remain restored");
-  assert(state.tasks[1].taskid === 7, "active tasks should remain restored");
-  assert(state.nextTaskId === 8, "next id should follow the highest task id");
   state = applyTaskToolCall(
     state,
     "TaskCreate",

web/workspace/src/lib/workspace/console/tasks.ts

@@ -62,6 +62,13 @@ export function applyTaskToolCall(
 
   const current = state.tasks[index];
   const status = update.status ?? current.status;
+  if (status === "deleted") {
+    return {
+      tasks: state.tasks.filter((_, taskIndex) => taskIndex !== index),
+      nextTaskId: state.nextTaskId,
+    };
+  }
+
   const tasks = [...state.tasks];
   tasks[index] = {
     taskid: current.taskid,
@@ -78,9 +85,10 @@ export function applyTaskSnapshotText(
 ): ConsoleTaskState {
   const tasks = parseTaskSnapshotText(text);
   if (!tasks) return state;
+  const retained = tasks.filter((task) => task.status !== "deleted");
   return {
-    tasks,
-    nextTaskId: Math.max(1, ...tasks.map((task) => task.taskid + 1)),
+    tasks: retained,
+    nextTaskId: Math.max(1, ...retained.map((task) => task.taskid + 1)),
   };
 }
 
@@ -105,7 +113,9 @@ export function parseTaskSnapshotText(text: string): ConsoleTask[] | null {
   for (const candidate of value.tasks) {
     const task = taskEntry(candidate);
     if (!task) return null;
-    tasks.push(task);
+    if (task.status !== "deleted") {
+      tasks.push(task);
+    }
   }
   return tasks;
 }