refactor: standardize file-level comments, drop unused pkgs, and theme lazygit with base16

- Move inline comments to top of file across all modules for consistent
style
- Add descriptive comments to files missing them (aggregators,
assertions, scripts, flake)
- Remove unused `pkgs` parameter from i3/keybindings.nix and
zathura/default.nix
- Drop explicit `package = pkgs.zathura` (home-manager provides the
default)
- Delete stale meli-sync.sh (migrated to neomutt)
- Remove extraneous blank lines for consistent formatting
- Theme lazygit with config.scheme base16 colors instead of hardcoded
names

6 files changed, 6 insertions, 11 deletions

diff --git a/modules/system/bottom/default.nix b/modules/system/bottom/default.nix
index 59a2a43..113ba51 100644
--- a/modules/system/bottom/default.nix
+++ b/modules/system/bottom/default.nix
@@ -1,11 +1,10 @@
+# Bottom - Cross-platform graphical process/system monitor (Rust-based)
 {
   config,
   lib,
   pkgs,
   ...
 }:
-
-# Bottom - Cross-platform graphical process/system monitor (Rust-based)
 {
   options.system.bottom = {
     enable = lib.mkEnableOption "Enables bottom.";
diff --git a/modules/system/brightnessctl/default.nix b/modules/system/brightnessctl/default.nix
index b95ddb4..c686eaf 100644
--- a/modules/system/brightnessctl/default.nix
+++ b/modules/system/brightnessctl/default.nix
@@ -1,11 +1,10 @@
+# brightnessctl - Backlight brightness control tool
 {
   config,
   lib,
   pkgs,
   ...
 }:
-
-# brightnessctl - Backlight brightness control tool
 {
   options.system.brightnessctl = {
     enable = lib.mkEnableOption "Enables brightnessctl.";
diff --git a/modules/system/default.nix b/modules/system/default.nix
index 3746d2c..afd3c12 100644
--- a/modules/system/default.nix
+++ b/modules/system/default.nix
@@ -1,5 +1,5 @@
+# System - System monitoring tools (bottom, brightnessctl, htop, nvtop, systemctl-tui)
 { ... }:
-
 {
   imports = [
     ./bottom
diff --git a/modules/system/htop/default.nix b/modules/system/htop/default.nix
index cf36f41..a7b9e25 100644
--- a/modules/system/htop/default.nix
+++ b/modules/system/htop/default.nix
@@ -1,11 +1,10 @@
+# Htop - Interactive process viewer (using htop-vim version)
 {
   pkgs,
   lib,
   config,
   ...
 }:
-
-# Htop - Interactive process viewer (using htop-vim version)
 {
   options.system.htop = {
     enable = lib.mkEnableOption "Enables htop.";
diff --git a/modules/system/nvtop/default.nix b/modules/system/nvtop/default.nix
index 8b41978..54b4e44 100644
--- a/modules/system/nvtop/default.nix
+++ b/modules/system/nvtop/default.nix
@@ -1,11 +1,10 @@
+# Nvtop - GPU process monitor (NVIDIA/AMD/Intel GPUs)
 {
   config,
   pkgs,
   lib,
   ...
 }:
-
-# Nvtop - GPU process monitor (NVIDIA/AMD/Intel GPUs)
 {
   options.system.nvtop = {
     enable = lib.mkEnableOption "Enables nvtop.";
diff --git a/modules/system/systemctl-tui/default.nix b/modules/system/systemctl-tui/default.nix
index 1b151cf..e7ccaa9 100644
--- a/modules/system/systemctl-tui/default.nix
+++ b/modules/system/systemctl-tui/default.nix
@@ -1,11 +1,10 @@
+# systemctl-tui - TUI for systemctl (systemd service management)
 {
   config,
   pkgs,
   lib,
   ...
 }:
-
-# systemctl-tui - TUI for systemctl (systemd service management)
 {
   options.system.systemctl-tui = {
     enable = lib.mkEnableOption "Enables systemctl-tui.";