Rename 'The Sovran Hub' to 'The Hub' in README

Updated references from 'Sovran Hub' to 'The Hub' for consistency.

README.md

@@ -45,7 +45,7 @@ are ready.
 - [What is included](#what-is-included)
 - [Three modes](#three-modes)
 - [Use it your way](#use-it-your-way)
-- [The Sovran Hub](#the-sovran-hub)
+- [The Hub](#the-hub)
 - [Install Sovran_SystemsOS](#install-sovran_systemsos)
 - [For developers](#for-developers)
   - [Development workflow](#development-workflow)
@@ -264,11 +264,11 @@ infrastructure behind them.
 
 ---
 
-## The Sovran Hub
+## The Hub
 
 ### Your private infrastructure, controlled from any screen.
 
-The Sovran Hub is the command center built into Sovran_SystemsOS. It is both a
+The Hub is the command center built into Sovran_SystemsOS. It is both a
 local desktop application and a private web interface served directly by your
 Sovran_SystemsOS machine. Nothing needs to be installed on the device opening
 the Hub: you only need a modern browser and access to the same local network.
@@ -281,9 +281,9 @@ From one place, the Hub helps you:
 - Reach your Bitcoin tools, private cloud, and communications
 - Perform supported system operations without everyday terminal commands
 
-<img src="assets/sovran-hub-screenshot.webp" alt="The Sovran Hub dashboard" width="800" />
+<img src="assets/sovran-hub-screenshot.webp" alt="The Sovran Hub welcome dashboard" width="800" />
 
-*The Sovran Hub: manage your private infrastructure from one place.*
+*The Hub: your whole system at a glance — Bitcoin, Lightning, and your private apps.*
 
 ### Example home setup
 
@@ -300,7 +300,7 @@ From one place, the Hub helps you:
                     ┌──────────────────────────┐
                     │   Sovran_SystemsOS       │
                     │                          │
-                    │   • Sovran Hub           │
+                    │   • The Hub           │
                     │   • Bitcoin node         │
                     │   • Sparrow Wallet       │
                     │   • Bisq and Bisq 2      │