feat: implement hybrid declarative state with automatic Nix sync

features/scripts/utils/nomarchy-state-write

@@ -99,3 +99,11 @@ LOCK_FILE="${STATE_FILE}.lock"
 
 # Clean up lock file
 rm -f "$LOCK_FILE"
+
+# If we just updated the main home state file, sync it to the Nix configuration.
+# This bridges the gap between runtime UI changes and declarative Nix.
+if [[ "$STATE_FILE" == "$HOME/.config/nomarchy/state.json" ]]; then
+    if command -v nomarchy-sync-nix-state >/dev/null 2>&1; then
+        nomarchy-sync-nix-state
+    fi
+fi