Add readmes

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "NixOS Configurations";
+  description = "Nettika's NixOS Configs";
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";

hosts/readme.md

@@ -0,0 +1,6 @@
+# Hosts
+
+- [astral](astral) - VPS running miscellaneous servers
+- [marauder](marauder) - My laptop
+- [quasar](quasar) - VPS running the [consortium.chat](https://consortium.chat)
+  matrix-synapse instance

modules/readme.md

@@ -0,0 +1,7 @@
+# Modules
+
+- `nano`: Base config for [nano](https://www.nano-editor.org)
+- `nettika`: Base config for user "nettika"
+- `promptmoji`: Fish prompt starting with an emoji to indicate which host I'm
+  logged into. The emoji is configured with `promptSymbol`. Ignored if
+  `programs.fish.enabled` is false.

readme.md

@@ -0,0 +1,4 @@
+# Nettika's NixOS Configs
+
+- [hosts](hosts) - my `nixosConfigurations`
+- [modules](modules) - my `nixosModules`