Fix shiro device classification

- Correct shiro from MacBook to Mac Mini desktop classification
- Move shiro from portable to workstation category in documentation
- Update device architecture details with Mac Mini specific features
- Highlight shiro's role as ARM64 build server and desktop machine
- Update D2 diagram to reflect correct device categorization
- Regenerate diagram with corrected classifications

DEVICE_ARCHITECTURE.md

@@ -67,6 +67,17 @@ This document provides a comprehensive overview of all devices managed by this N
   - Secure boot with Lanzaboote
   - TPM2 support
 
+#### shiro (Mac Mini)
+- **Architecture**: aarch64-darwin (Apple Silicon)
+- **User**: servius
+- **Role**: macOS desktop and build server
+- **Configuration**: nix-darwin + Home Manager
+- **Features**:
+  - ARM64 build server for distributed builds
+  - Samba file sharing
+  - Colima container runtime
+  - Aerospace window management
+
 ### 📱 Portable/Mobile Devices
 
 #### kuro (MacBook)
@@ -79,12 +90,6 @@ This document provides a comprehensive overview of all devices managed by this N
   - Custom keyboard mappings
   - Homebrew integration
 
-#### shiro (MacBook)
-- **Architecture**: aarch64-darwin (Apple Silicon)
-- **User**: servius
-- **Role**: Secondary macOS machine
-- **Configuration**: nix-darwin + Home Manager
-
 #### SteamDeck (Gaming Handheld)
 - **Architecture**: x86_64-linux
 - **User**: deck
@@ -166,10 +171,11 @@ kuro → mirai, shiro
 - **Containers**: Docker with custom mount points
 - **Emulation**: aarch64-linux binfmt support
 
-### macOS Devices (kuro, shiro)
+### macOS Devices (kuro - MacBook, shiro - Mac Mini)
-- **Authentication**: Touch ID integration
+- **Authentication**: Touch ID integration (kuro)
 - **Keyboard**: Custom modifier key mappings
 - **Package management**: Homebrew + Nix hybrid approach
+- **Build server**: shiro provides ARM64 builds for the network
 
 ## Security Features
 

README.md

@@ -8,7 +8,7 @@ This repository manages **7 devices** across multiple platforms and architecture
 
 - **3 Servers**: mirai (main), deoxys (VM), tsuba (Raspberry Pi)  
 - **1 Workstation**: ryu (primary desktop)
-- **3 Portable devices**: kuro & shiro (MacBooks), SteamDeck
+- **3 Portable devices**: kuro (MacBook), SteamDeck, and 1 desktop Mac Mini (shiro)
 
 > 📈 **Visual Architecture**: See [Device Architecture Diagram](assets/devices-diagram.svg) for a complete visual overview.
 
@@ -25,12 +25,12 @@ This repository manages **7 devices** across multiple platforms and architecture
 | Device | Architecture | Setup | Features |
 |--------|-------------|-------|----------|
 | **ryu** | x86_64-linux | Main Desktop | Hyprland+GNOME, 3-monitor setup, gaming, audio production |
+| **shiro** | aarch64-darwin | Mac Mini Desktop | nix-darwin + Home Manager, build server |
 
 ### Portable Devices  
 | Device | Architecture | Platform | Configuration |
 |--------|-------------|----------|---------------|
-| **kuro** | aarch64-darwin | macOS | nix-darwin + Home Manager |
+| **kuro** | aarch64-darwin | MacBook | nix-darwin + Home Manager |
-| **shiro** | aarch64-darwin | macOS | nix-darwin + Home Manager |
 | **SteamDeck** | x86_64-linux | SteamOS | Home Manager only |
 
 ## 🚀 Quick Start
@@ -160,11 +160,12 @@ just home
 
 ## 📱 Portable Configuration
 
-### macOS Features (kuro, shiro)
+### macOS Features (kuro - MacBook, shiro - Mac Mini)
-- **Touch ID**: Sudo authentication integration
+- **Touch ID**: Sudo authentication integration (kuro)
 - **Keyboard remapping**: Custom modifier key layouts
 - **Aerospace/Yabai**: Tiling window management
 - **Homebrew**: Package management for macOS-specific applications
+- **Build server**: shiro serves as ARM64 build machine
 
 ### SteamDeck Integration
 - **Home Manager**: User environment without system changes

assets/devices-diagram.d2

@@ -66,6 +66,12 @@ workstations: Development Workstations {
       }
     }
   }
+
+  shiro: shiro {
+    shape: rectangle
+    style.fill: "#9ca3af"
+    label: "shiro\nMac Mini Desktop\naarch64-darwin\nUser: servius\nBuild Server"
+  }
 }
 
 mobile: Portable Devices {
@@ -79,12 +85,6 @@ mobile: Portable Devices {
     label: "kuro\nMacBook\naarch64-darwin\nUser: fs0c131y"
   }
 
-  shiro: shiro {
-    shape: rectangle
-    style.fill: "#9ca3af"
-    label: "shiro\nMacBook\naarch64-darwin\nUser: servius"
-  }
-
   deck: SteamDeck {
     shape: rectangle
     style.fill: "#ef4444"
@@ -170,7 +170,7 @@ mobile.kuro -> servers.mirai: SSH Deploy {
   style.stroke-width: 2
 }
 
-mobile.kuro -> mobile.shiro: SSH Deploy {
+mobile.kuro -> workstations.shiro: SSH Deploy {
   style.stroke: "#7c3aed"
   style.stroke-width: 2
 }
@@ -194,7 +194,7 @@ workstations.ryu -> network.zerotier
 workstations.ryu -> builders: Uses distributed builds
 mobile.kuro -> builders: Uses distributed builds
 servers.mirai -> builders: Build server
-mobile.shiro -> builders: Build server
+workstations.shiro -> builders: Build server
 
 # Configuration connections
 config_mgmt.nixos_flake -> servers.mirai
@@ -203,7 +203,7 @@ config_mgmt.nixos_flake -> servers.tsuba
 config_mgmt.nixos_flake -> workstations.ryu
 
 config_mgmt.darwin -> mobile.kuro
-config_mgmt.darwin -> mobile.shiro
+config_mgmt.darwin -> workstations.shiro
 
 config_mgmt.home_manager -> mobile.deck