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

3 files changed, 3 insertions, 4 deletions

diff --git a/modules/web/aria2/default.nix b/modules/web/aria2/default.nix
index efea840..52664d2 100644
--- a/modules/web/aria2/default.nix
+++ b/modules/web/aria2/default.nix
@@ -1,11 +1,10 @@
+# Aria2 - command line download manager
 {
   pkgs,
   lib,
   config,
   ...
 }:
-
-# Aria2 - command line download manager
 {
   options.web.aria2 = {
     enable = lib.mkEnableOption "Enables aria2.";
diff --git a/modules/web/brave/default.nix b/modules/web/brave/default.nix
index e323058..5276f5a 100644
--- a/modules/web/brave/default.nix
+++ b/modules/web/brave/default.nix
@@ -1,10 +1,10 @@
+# Brave - Privacy-focused web browser configuration
 {
   config,
   lib,
   pkgs,
   ...
 }:
-
 {
   options.web.brave = {
     enable = lib.mkEnableOption "Enables brave.";
diff --git a/modules/web/default.nix b/modules/web/default.nix
index fa54cad..a5c2ae6 100644
--- a/modules/web/default.nix
+++ b/modules/web/default.nix
@@ -1,5 +1,5 @@
+# Web - Web browser and downloader modules (aria2, brave)
 { ... }:
-
 {
   imports = [
     ./aria2