refactor: implement component-based architecture for enhanced maintainability

- Reorganize directory structure into core/, features/, and themes/
- Colocate application Nix logic, configs, scripts, and theme overrides
- Implement 'Inversion of Control' for theming: apps now pull theme-specific layouts
- Update flake.nix and shared library paths to match the new structure
- Document the new Feature-Centric architecture in README.md

features/scripts/utils/nomarchy-state

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# Manage persistent runtime state files for Nomarchy indicators.
+# Usage: nomarchy-state <set|clear> <state-name-or-pattern>
+# Used to track whether things like reboot, restart, etc are required.
+# DO NOT use this for configuration toggles (suspend, screensaver, etc).
+# Use declarative Nomarchy NixOS home-manager options for those instead.
+
+STATE_DIR="$HOME/.local/state/nomarchy"
+mkdir -p "$STATE_DIR"
+
+COMMAND="$1"
+STATE_NAME="$2"
+
+if [[ -z $COMMAND ]]; then
+  echo "Usage: nomarchy-state <set|clear> <state-name-or-pattern>"
+  exit 1
+fi
+
+if [[ -z $STATE_NAME ]]; then
+  echo "Usage: nomarchy-state $COMMAND <state-name>"
+  exit 1
+fi
+
+case "$COMMAND" in
+set) touch "$STATE_DIR/$STATE_NAME" ;;
+clear) find "$STATE_DIR" -maxdepth 1 -type f -name "$STATE_NAME" -delete ;;
+esac