[FEATURE] Dispatch onboarding needs basic usage info in-app

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

As a new Dispatch user, it wasn't clear how the feature actually works. I had to ask the assistant directly to understand things like:

-Dispatch is one persistent thread, but each request I send gets routed to its own isolated task session.
Tasks don't share context, so unrelated requests (a financial doc, then a weather report) don't leak into each other.
-To continue a previous task, I either describe it in words so the assistant can match it, or tap the task in the list.
-To start fresh, I just send the next request — no explicit "new conversation" button needed. If I want previous context dropped entirely, I ask.
-Memory persists across sessions for durable things (role, preferences, ongoing projects), but not ephemeral task details.

None of this is surfaced in the app. A short onboarding screen, tooltip, or "How Dispatch works" link in the menu would prevent new users from guessing and getting frustrated.

Proposed Solution

Document , in app, especially at onboarding phase how to use dispatch feature

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

Documentation

Use Case Example

_No response_

Additional Context

_No response_