feat(mobile): show new-task drafts alongside pending tasks in the thread list#10260

@@ -0,0 +1,134 @@
+import { EnvironmentId, ProjectId } from "@t3tools/contracts";
+
+import { deriveThreadTitleFromPrompt } from "../lib/projectThreadStartTurn";
+import type { QueuedThreadCreation, QueuedThreadMessage } from "./thread-outbox-model";
+import type { ComposerDraft } from "./use-composer-drafts";
+
+/**
+ * Unsent work that will become a thread, shaped for thread-list presentation.
+ * A `pending` task sits in the outbox and sends itself when its environment
+ * reconnects; a `draft` is the project's new-task composer content, which
+ * only sends when the user submits it. Both share the list slot so the user
+ * can find everything they have written but not yet started in one place.
+ */
+export type PendingNewTask = PendingQueuedTask | PendingDraftTask;
+
+export interface PendingQueuedTask {
+  readonly kind: "pending";
+  readonly key: string;
+  readonly environmentId: EnvironmentId;
+  readonly projectId: ProjectId;
+  readonly projectTitle: string | undefined;
+  readonly projectCwd: string | undefined;
+  readonly branch: string | null;
+  readonly title: string;
+  readonly createdAt: string;
+  readonly message: QueuedThreadMessage;
+  readonly creation: QueuedThreadCreation;
+}
+
+export interface PendingDraftTask {
+  readonly kind: "draft";
+  readonly key: string;
+  readonly environmentId: EnvironmentId;
+  readonly projectId: ProjectId;
+  readonly projectTitle: undefined;
+  readonly projectCwd: undefined;
+  readonly branch: string | null;
+  readonly title: string;
+  /** Drafts have no creation timestamp; they sort as current work. */
+  readonly createdAt: string;
+  readonly draftKey: string;
+  readonly draft: ComposerDraft;
+}
+
+const NEW_TASK_DRAFT_PREFIX = "new-task:";
+
+/** Parses a `new-task:<environmentId>:<projectId>` composer draft key. */
+export function parseNewTaskDraftKey(
+  draftKey: string,
+): { readonly environmentId: EnvironmentId; readonly projectId: ProjectId } | null {
+  if (!draftKey.startsWith(NEW_TASK_DRAFT_PREFIX)) {
+    return null;
+  }
+  const scope = draftKey.slice(NEW_TASK_DRAFT_PREFIX.length);
+  const separator = scope.lastIndexOf(":");