feat: Add little-rascal laptop config and lab-tool auto-update system

## New Machine: little-rascal
- Add Lenovo Yoga Slim 7 14ARE05 configuration (AMD Ryzen 7 4700U)
- Niri desktop with CLI login (greetd + tuigreet)
- zram swap configuration (25% of RAM with zstd)
- AMD-optimized hardware support and power management
- Based on congenital-optimist structure with laptop-specific additions

## Lab Tool Auto-Update System
- Implement Guile Scheme auto-update module (lab/auto-update.scm)
- Add health checks, logging, and safety features
- Integrate with existing deployment and machine management
- Update main CLI with auto-update and auto-update-status commands
- Create NixOS service module for automated updates
- Document complete implementation in simple-auto-update-plan.md

## MCP Integration
- Configure Task Master AI and Context7 MCP servers
- Set up local Ollama integration for AI processing
- Add proper environment configuration for existing models

## Infrastructure Updates
- Add little-rascal to flake.nix with deploy-rs support
- Fix common user configuration issues
- Create missing emacs.nix module
- Update package integrations

🤖 Generated with [Claude Code](https://claude.ai/code)

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

machines/little-rascal/hardware-configuration.nix

@@ -0,0 +1,125 @@
+# Hardware Configuration for Little Rascal
+# Lenovo Yoga Slim 7 14ARE05 - AMD Ryzen 7 4700U
+
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+  ];
+
+  # Boot configuration for AMD Ryzen 7 4700U
+  boot = {
+    initrd = {
+      availableKernelModules = [
+        "nvme"
+        "xhci_pci"
+        "usb_storage"
+        "sd_mod"
+        "sdhci_pci"
+      ];
+      kernelModules = [ ];
+    };
+    
+    kernelModules = [ "kvm-amd" ]; # AMD Ryzen system
+    extraModulePackages = [ ];
+  };
+
+  # Filesystem configuration - TEMPLATE
+  # Update these paths and UUIDs after running nixos-generate-config
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-uuid/REPLACE-WITH-ROOT-UUID";
+      fsType = "ext4";
+    };
+
+    "/boot" = {
+      device = "/dev/disk/by-uuid/REPLACE-WITH-BOOT-UUID";
+      fsType = "vfat";
+      options = [ "fmask=0022" "dmask=0022" ];
+    };
+  };
+
+  # Swap configuration - TEMPLATE
+  # Uncomment and update if using swap partition
+  # swapDevices = [
+  #   { device = "/dev/disk/by-uuid/REPLACE-WITH-SWAP-UUID"; }
+  # ];
+
+  # Hardware-specific configuration for Lenovo Yoga Slim 7 14ARE05
+  hardware = {
+    # CPU configuration - AMD Ryzen 7 4700U
+    cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+    
+    # Enable firmware updates
+    enableRedistributableFirmware = true;
+    
+    # Graphics configuration - AMD Radeon Vega (integrated)
+    graphics = {
+      enable = true;
+      enable32Bit = true;
+      
+      # AMD integrated graphics drivers
+      extraPackages = with pkgs; [
+        amdvlk          # AMD Vulkan driver
+        rocmPackages.clr.icd  # OpenCL support
+      ];
+      
+      # 32-bit support for compatibility
+      extraPackages32 = with pkgs.driversi686Linux; [
+        amdvlk
+      ];
+    };
+    
+    # Bluetooth support for Intel AX200
+    bluetooth = {
+      enable = true;
+      powerOnBoot = true;
+    };
+  };
+
+  # Power management for AMD Ryzen 7 4700U
+  powerManagement = {
+    enable = true;
+    powertop.enable = true; # Power optimization
+    cpuFreqGovernor = "powersave"; # Better battery life
+  };
+
+  # Network hardware - Intel Wi-Fi 6 AX200
+  networking = {
+    # Enable NetworkManager for WiFi management
+    networkmanager.enable = true;
+    
+    # Disable wpa_supplicant (using NetworkManager)
+    wireless.enable = false;
+  };
+
+  # Firmware for Intel WiFi and Bluetooth
+  hardware.firmware = with pkgs; [
+    linux-firmware
+  ];
+
+  # AMD-specific optimizations
+  boot.kernelParams = [
+    # Enable AMD graphics performance
+    "amdgpu.ppfeaturemask=0xffffffff"
+  ];
+
+  # TLP for better power management (alternative to power-profiles-daemon)
+  services.tlp = {
+    enable = false; # Using power-profiles-daemon instead
+    settings = {
+      # Would be configured here if enabled
+      CPU_SCALING_GOVERNOR_ON_AC = "performance";
+      CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
+    };
+  };
+
+  # Notes for this specific hardware:
+  # - Lenovo Yoga Slim 7 14ARE05
+  # - AMD Ryzen 7 4700U with Radeon Vega Graphics
+  # - 16GB LPDDR4 RAM (soldered, not upgradeable)
+  # - Intel Wi-Fi 6 AX200 + Bluetooth
+  # - 128GB SSD storage
+  # - Currently running btrfs filesystem
+}