Normalize Nix module formatting and update flake.lock

Consistently format module argument blocks and convert aligned
package comments to inline comments. Trim trailing whitespace and
minor layout tweaks across modules. Bump opencode rev, narHash and
lastModified in flake.lock and remove the original dev ref.

modules/services.nix

@@ -1,6 +1,11 @@
 # modules/services.nix
 # System services: SSD maintenance, swap, mDNS, profile sync
-{ config, pkgs, lib, ... }:
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
 
 {
   # ═══════════════════════════════════════════════════════════════
@@ -18,8 +23,8 @@
   # 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
+    algorithm = "zstd"; # Best compression ratio
+    memoryPercent = 50; # Use up to 50% of RAM for compressed swap
   };
 
   # ═══════════════════════════════════════════════════════════════
@@ -28,9 +33,9 @@
   # mDNS for local network discovery (.local domains)
   services.avahi = {
     enable = true;
-    nssmdns4 = true;           # Enable .local resolution
-    openFirewall = true;       # Allow mDNS through firewall
-    
+    nssmdns4 = true; # Enable .local resolution
+    openFirewall = true; # Allow mDNS through firewall
+
     publish = {
       enable = true;
       addresses = true;
@@ -53,7 +58,7 @@
   # ═══════════════════════════════════════════════════════════════
   # ADDITIONAL SYSTEM OPTIMIZATIONS
   # ═══════════════════════════════════════════════════════════════
-  
+
   # Enable firmware updates
   services.fwupd.enable = true;
 
@@ -64,8 +69,8 @@
   # 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
+    freeMemThreshold = 5; # Start killing at 5% free memory
+    freeSwapThreshold = 10; # Also consider swap
     enableNotifications = true;
   };