chore(agent): update serena memories with universe service command

Add documentation for the new `universe service` subcommand to help
future onboarding sessions understand the CLI tool capabilities.

Updated memories:
- project_overview: Added Universe CLI section with commands and features
- codebase_structure: Added universe CLI file structure
- suggested_commands: Added universe CLI usage examples

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: r17x

.serena/memories/codebase_structure.md

@@ -26,9 +26,14 @@
 │   ├── modules/        # Reusable modules
 │   │   ├── cross/      # Cross-platform modules
 │   │   ├── darwin/     # Darwin-specific modules
+│   │   │   └── mouseless.nix  # Tiling WM setup (yabai/aerospace, skhd, sketchybar)
 │   │   ├── home/       # Home-manager modules
 │   │   ├── nixos/      # NixOS-specific modules
 │   │   └── flake/      # Flake-specific modules
+│   │       ├── universe.nix   # Universe CLI tool
+│   │       └── universe/      # Platform-specific implementations
+│   │           ├── service-darwin.nix  # macOS launchctl service management
+│   │           └── service-linux.nix   # Linux systemctl service management
 │   │
 │   ├── overlays/       # Nixpkgs overlays
 │   │   ├── macOS packages

.serena/memories/project_overview.md

@@ -27,6 +27,26 @@ A comprehensive Nix-based configuration system that manages development environm
 - Multiple development shells for various languages
 - Secret management with SOPS
 - Process-compose for services (Ollama, MariaDB)
+- **Universe CLI** - Custom management tool for identities and services
+
+## Universe CLI (`universe`)
+A custom Nix-built CLI tool for managing the system. Located in `nix/modules/flake/universe.nix`.
+
+### Commands
+- `universe identity` - Manage GPG identities for git (add, regen, import, remove, list, export, pubkey)
+- `universe rebuild` - Run darwin-rebuild switch with flake
+- `universe service` - Runtime service management (list, start, stop, restart, status, enable, disable, delete, logs)
+
+### Service Command Details
+Platform-specific implementations using Nix-level OS detection (`stdenv.isDarwin`):
+- **macOS**: Uses `launchctl` for launchd services
+- **Linux**: Uses `systemctl` for systemd services
+
+Features:
+- Short names auto-resolve (e.g., `linux-builder` → `org.nixos.linux-builder`)
+- Auto-detect system vs user domain
+- Default shows only nix-managed services (`org.nixos.*` / `nix-*`)
+- Colored terminal output with verification indicators
 
 ## Repository URL
 https://github.com/r17x/universe

.serena/memories/suggested_commands.md

@@ -1,5 +1,44 @@
 # Suggested Commands
 
+## Universe CLI
+
+### System Rebuild
+```bash
+universe rebuild              # Run darwin-rebuild switch --flake .
+```
+
+### Service Management
+```bash
+universe service list         # List nix-managed services (default)
+universe service list --all   # List all services (system + third-party)
+universe service list --running   # Show only running services
+universe service list --user      # Show user services only
+
+universe service start <name>     # Start a service
+universe service stop <name>      # Stop a service
+universe service restart <name>   # Restart a service
+universe service status <name>    # Show detailed service status
+universe service enable <name>    # Enable at boot
+universe service disable <name>   # Disable at boot
+universe service delete <name>    # Remove zombie/orphaned service
+universe service logs <name>      # View service logs
+
+# Examples:
+universe service restart sketchybar
+universe service stop linux-builder
+universe service status jankyborders
+```
+
+### Identity Management (GPG/Git)
+```bash
+universe identity --list                          # List all identities
+universe identity --add <name> '<real>' <email>   # Add new identity
+universe identity --regen <name>                  # Regenerate GPG key
+universe identity --remove <name>                 # Remove identity
+universe identity --pubkey <name|email>           # Export public key
+universe identity --export <email>                # Export secret key
+```
+
 ## Darwin (macOS) System Management
 
 ### Build and Switch Configuration