feat: initial m3ta-home structure

- flake.nix with nixpkgs, home-manager, nix-colors, m3ta-nixpkgs, agenix, NUR inputs
- lib/mkHome.nix: compose HM config from user + identity + context + sets
- profiles/base: shell, cli-tools, secrets (always loaded)
- profiles/contexts/desktop: WM, apps, theme, ghostty
- profiles/contexts/server: minimal headless
- profiles/sets/coding: core (git, direnv, jq, rg), editor, lsp, languages, agents
- profiles/sets/gaming: steam, gamescope, gpu
- profiles/sets/media: obs, ffmpeg, kdenlive, handbrake, yt-dlp
- users/m3tam3re/identities: private.nix, work.nix (git, jj, ssh per identity)
- users/m3tam3re/preferences: cliphist, difftastic, base packages

profiles/base/cli-tools/fzf.nix

@@ -0,0 +1,41 @@
+# Fuzzy finder with nix-colors palette and Wayland clipboard integration.
+{
+  config,
+  lib,
+  ...
+}:
+with lib; let
+  cfg = config.base.cliTools.fzf;
+in {
+  # Enabled by default — base modules are always-on.
+  options.base.cliTools.fzf.enable = (mkEnableOption "enable fuzzy finder") // {default = true;};
+
+  config = mkIf cfg.enable {
+    programs.fzf = {
+      enable = true;
+      enableFishIntegration = true;
+      colors = {
+        "fg" = "#${config.colorScheme.palette.base05}";
+        "bg" = "#${config.colorScheme.palette.base00}";
+        "hl" = "#${config.colorScheme.palette.base0E}";
+        "fg+" = "#${config.colorScheme.palette.base05}";
+        "bg+" = "#${config.colorScheme.palette.base02}";
+        "hl+" = "#${config.colorScheme.palette.base0E}";
+        "info" = "#${config.colorScheme.palette.base09}";
+        "prompt" = "#${config.colorScheme.palette.base0B}";
+        "pointer" = "#${config.colorScheme.palette.base08}";
+        "marker" = "#${config.colorScheme.palette.base08}";
+        "spinner" = "#${config.colorScheme.palette.base09}";
+        "header" = "#${config.colorScheme.palette.base03}";
+      };
+      defaultOptions = [
+        "--preview='bat --color=always -n {}'"
+        "--bind 'ctrl-/:toggle-preview'"
+        "--header 'Press CTRL-Y to copy command into clipboard'"
+        "--bind 'ctrl-y:execute-silent(echo -n {2..} | wl-copy)+abort'"
+      ];
+      defaultCommand = "fd --type f --exclude .git --follow --hidden";
+      changeDirWidgetCommand = "fd --type d --exclude .git --follow --hidden";
+    };
+  };
+}