Add Navidrome and system services modules

Configure Navidrome settings (MusicFolder, Port 4533, Address 0.0.0.0),
open firewall and create tmpfiles entry for the music directory.

Enable system services: weekly fstrim, zram swap (zstd), Avahi mDNS,
psd,
fwupd, earlyoom and plocate

configuration.nix

@@ -17,6 +17,9 @@
     ./modules/theming.nix     # Fonts, themes, cursors
     ./modules/virtualization.nix  # QEMU, KVM, virt-manager
     ./modules/power.nix       # Power management, CPU governors
+    ./modules/shell.nix       # Fish shell configuration
+    ./modules/services.nix    # System services (fstrim, zram, avahi, psd)
+    ./modules/navidrome.nix   # Music streaming server
   ];
 
   # ═══════════════════════════════════════════════════════════════
@@ -102,13 +105,13 @@
       # - gamemode (gaming.nix)
       # - corectrl (gpu-amd.nix)
     ];
-    shell = pkgs.zsh;
+    shell = pkgs.fish;  # Fish shell (migrated from Arch)
   };
 
   # ═══════════════════════════════════════════════════════════════
   # PROGRAMS
   # ═══════════════════════════════════════════════════════════════
-  programs.zsh.enable = true;
+  programs.zsh.enable = true;  # Keep zsh available as fallback
   programs.yazi.enable = true;
   programs.firefox.enable = true;
   programs.niri.enable = true;

modules/apps.nix

@@ -16,6 +16,10 @@
     # Music
     # ─────────────────────────────────────────────────────────────
     amberol             # Simple music player for local files
+    feishin             # Navidrome/Jellyfin client
+    picard              # MusicBrainz Picard - music tagger
+    beets               # Music library manager
+    cava                # Audio visualizer
     # Feishin available via Flatpak for Navidrome/Jellyfin
 
     # ─────────────────────────────────────────────────────────────
@@ -23,6 +27,8 @@
     # ─────────────────────────────────────────────────────────────
     vesktop             # Discord client (Wayland-native, with Vencord)
     thunderbird         # Email client
+    signal-desktop      # Encrypted messaging
+    telegram-desktop    # Telegram client
 
     # ─────────────────────────────────────────────────────────────
     # Office & Productivity
@@ -69,6 +75,9 @@
     gnome-calculator    # Calculator
     gnome-clocks        # World clocks, alarms, timers
     baobab              # Disk usage analyzer
+    localsend           # AirDrop-like file sharing (cross-platform)
+    meld                # Visual diff and merge tool
+    rclone              # Cloud storage sync (Google Drive, Dropbox, etc.)
   ];
 
   # GNOME Keyring for secrets storage

modules/desktop.nix

@@ -94,6 +94,14 @@
     wtype            # Wayland keyboard automation
     wlr-randr        # Display configuration
     wayland-utils    # Debug utilities
+
+    # ─────────────────────────────────────────────────────────────
+    # Additional desktop utilities (migrated from Arch)
+    # ─────────────────────────────────────────────────────────────
+    cliphist         # Clipboard history for Wayland
+    wlsunset         # Blue light filter / night mode
+    brightnessctl    # Brightness control (even for desktop monitors via DDC)
+    wlogout          # Logout menu / session manager
   ];
 
   # Environment variables for Wayland compatibility

modules/dev.nix

@@ -75,37 +75,22 @@
     httpie              # Better curl
     curlie              # Curl wrapper with httpie-like syntax
 
+    # Additional CLI tools (migrated from Arch)
+    tealdeer            # tldr - simplified man pages
+    duf                 # Better df (disk usage)
+    sd                  # Better sed (find & replace)
+    pv                  # Pipe viewer (progress bar for pipes)
+    parallel            # GNU parallel (run commands in parallel)
+    inxi                # System information tool
+    glances             # System monitor (htop alternative)
+    grc                 # Generic colorizer for CLI output
+
     # ─────────────────────────────────────────────────────────────
     # Database Tools
     # ─────────────────────────────────────────────────────────────
     dbeaver-bin         # Universal database tool (GUI)
   ];
 
-  # Better shell experience for development
-  programs.zsh = {
-    # Already enabled in base config
-    autosuggestions.enable = true;
-    syntaxHighlighting.enable = true;
-
-    shellAliases = {
-      ll = "eza -la --icons --git";
-      ls = "eza --icons";
-      cat = "bat";
-      find = "fd";
-      grep = "rg";
-      
-      # Docker shortcuts
-      dc = "docker-compose";
-      dps = "docker ps";
-      
-      # Git shortcuts
-      gs = "git status";
-      gd = "git diff";
-      gl = "git log --oneline -20";
-      
-      # NixOS shortcuts
-      rebuild = "sudo nixos-rebuild switch --flake .";
-      update = "nix flake update";
-    };
-  };
+  # Note: Shell aliases are now managed in shell.nix (Fish shell)
+  # Zsh is kept as a fallback shell but Fish is the primary
 }

modules/navidrome.nix

@@ -0,0 +1,54 @@
+# modules/navidrome.nix
+# Self-hosted music streaming server
+{ config, pkgs, lib, ... }:
+
+{
+  # ═══════════════════════════════════════════════════════════════
+  # NAVIDROME MUSIC SERVER
+  # ═══════════════════════════════════════════════════════════════
+  services.navidrome = {
+    enable = true;
+
+    settings = {
+      # Music library location
+      MusicFolder = "/home/pinj/Music";
+
+      # Server settings
+      Address = "0.0.0.0";
+      Port = 4533;
+
+      # UI settings
+      UIWelcomeMessage = "Welcome to Navidrome!";
+
+      # Enable transcoding (requires ffmpeg)
+      EnableTranscodingConfig = true;
+
+      # Scan settings
+      ScanSchedule = "@every 1h";    # Rescan library every hour
+      
+      # Last.fm scrobbling (configure in UI after setup)
+      LastFM.Enabled = true;
+
+      # Enable sharing features
+      EnableSharing = true;
+
+      # Enable covers from external sources
+      CoverArtPriority = "cover.*, folder.*, front.*, embedded, external";
+
+      # Session timeout (24 hours)
+      SessionTimeout = "24h";
+
+      # Enable Prometheus metrics (optional)
+      # Prometheus.Enabled = true;
+    };
+  };
+
+  # Open firewall for Navidrome
+  # Remove or comment out if you only access locally
+  networking.firewall.allowedTCPPorts = [ 4533 ];
+
+  # Ensure music directory exists and has correct permissions
+  systemd.tmpfiles.rules = [
+    "d /home/pinj/Music 0755 pinj users -"
+  ];
+}

modules/services.nix

@@ -0,0 +1,81 @@
+# modules/services.nix
+# System services: SSD maintenance, swap, mDNS, profile sync
+{ config, pkgs, lib, ... }:
+
+{
+  # ═══════════════════════════════════════════════════════════════
+  # SSD MAINTENANCE
+  # ═══════════════════════════════════════════════════════════════
+  # Weekly TRIM for SSDs (improves longevity and performance)
+  services.fstrim = {
+    enable = true;
+    interval = "weekly";
+  };
+
+  # ═══════════════════════════════════════════════════════════════
+  # ZRAM SWAP
+  # ═══════════════════════════════════════════════════════════════
+  # Compressed swap in RAM - better than no swap, faster than disk
+  zramSwap = {
+    enable = true;
+    algorithm = "zstd";        # Best compression ratio
+    memoryPercent = 50;        # Use up to 50% of RAM for compressed swap
+  };
+
+  # ═══════════════════════════════════════════════════════════════
+  # MDNS / AVAHI
+  # ═══════════════════════════════════════════════════════════════
+  # mDNS for local network discovery (.local domains)
+  services.avahi = {
+    enable = true;
+    nssmdns4 = true;           # Enable .local resolution
+    openFirewall = true;       # Allow mDNS through firewall
+    
+    publish = {
+      enable = true;
+      addresses = true;
+      workstation = true;
+    };
+  };
+
+  # ═══════════════════════════════════════════════════════════════
+  # PROFILE SYNC DAEMON
+  # ═══════════════════════════════════════════════════════════════
+  # Sync browser profiles to RAM for faster performance
+  # Works with Firefox/Zen Browser profiles
+  services.psd = {
+    enable = true;
+  };
+
+  # User needs to configure ~/.config/psd/psd.conf after first run
+  # Default will auto-detect Firefox profiles
+
+  # ═══════════════════════════════════════════════════════════════
+  # ADDITIONAL SYSTEM OPTIMIZATIONS
+  # ═══════════════════════════════════════════════════════════════
+  
+  # Enable firmware updates
+  services.fwupd.enable = true;
+
+  # Thermald for Intel CPUs (AMD uses different thermal management)
+  # Uncomment if on Intel:
+  # services.thermald.enable = true;
+
+  # Early OOM killer - prevents system freeze on memory exhaustion
+  services.earlyoom = {
+    enable = true;
+    freeMemThreshold = 5;      # Start killing at 5% free memory
+    freeSwapThreshold = 10;    # Also consider swap
+    enableNotifications = true;
+  };
+
+  # ═══════════════════════════════════════════════════════════════
+  # LOCATE DATABASE
+  # ═══════════════════════════════════════════════════════════════
+  # Fast file search with plocate
+  services.locate = {
+    enable = true;
+    package = pkgs.plocate;
+    interval = "daily";
+  };
+}

modules/virtualization.nix

@@ -13,12 +13,6 @@
     qemu = {
       package = pkgs.qemu_kvm;
 
-      # Enable UEFI support for VMs
-      ovmf = {
-        enable = true;
-        packages = [ pkgs.OVMFFull.fd ];
-      };
-
       # Enable TPM emulation for Windows 11
       swtpm.enable = true;