Add /ask contract; clarify peers, query vs control, identity gap

docs/outline/01-system-overview.md

@@ -18,6 +18,17 @@ way in, the phone app, would repeat the same work. The Hub stops this repeat.
 4. **Route** — send the request to one destination.
 5. **Answer** — return a short reply in the right shape.
 
+When the question is about another project's data, step 4 asks that project
+through the `/ask` contract. See `docs/ask-contract.md`.
+
+## Three Directions
+
+Nothing here is ownership. These are directions of talk.
+
+1. The Hub asks a project.
+2. A project tells the Hub.
+3. n8n triggers the project.
+
 ## Ways In
 
 - Phone app (Kotlin) — wake word, voice, controls.
@@ -26,17 +37,32 @@ way in, the phone app, would repeat the same work. The Hub stops this repeat.
 - dsh chat — per-person chat.
 - Console portal — web dashboard.
 
-## Destinations
+## Peers and Destinations
 
-| Destination | Job |
+Every other project is a peer. Each has its own folder, repo, port, and
+interface. Each works without the Hub.
+
+| Peer | Talk direction |
 |---|---|
-| Home Assistant | Lights, switches, timers, calendar. |
-| Speakers (Jervis) | Speak and announce. |
-| Internet control | Parental limits on kids' devices. |
-| Artemis | Operate the phone screen. |
-| Paperclip | Slow, multi-step, recorded work. |
-| Web search | Tavily search. |
-| Apprise / NTFY | Notifications and email. |
+| Email agent | Hub asks it. It tells the Hub. n8n scans it. |
+| Compass / NHS | Hub asks it. It tells the Hub. n8n scans it. |
+| Internet control | Hub asks it. Control goes through its own apps. |
+| Artemis | Hub calls it to act. Nothing comes back. |
+| Home Assistant | Hub calls it to act. |
+| Speakers (Jervis) | Hub calls it to speak. |
+| Paperclip | Hub files jobs. The answer returns. |
+| Web search | Hub calls it. |
+| Apprise / NTFY | Hub calls it to notify. |
+
+## Query, Command, or Control
+
+| Kind | Path | Confirm |
+|---|---|---|
+| Query | Hub asks a project (`/ask`) | No |
+| Command | Hub calls Home Assistant | No |
+| Control | Admin app calls internet control | Yes, on the phone |
+
+A high-consequence control does not route through the Hub.
 
 ## Reply Shapes
 
@@ -57,3 +83,4 @@ The Hub asks one question: does this need a decision, or does it need to happen?
 - Not a central brain. No single personality or memory.
 - Not Paperclip. The Hub does not wait minutes for an answer.
 - Not a destination. The Hub does not turn off the internet itself.
+- Not an owner. The other projects are peers, not sub-projects.