fix(scripts): resolve race condition in state-sync and mark stress test as complete

features/scripts/utils/nomarchy-state-write

@@ -90,20 +90,18 @@ LOCK_FILE="${STATE_FILE}.lock"
     # Validate JSON before moving
     if jq empty "$TMP_FILE" 2>/dev/null; then
         mv "$TMP_FILE" "$STATE_FILE"
+        
+        # Sync to the Nix configuration while still holding the lock.
+        # This prevents desyncs where a newer JSON state is overwritten by an
+        # older Nix state during concurrent writes.
+        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
     else
         echo "Error: Failed to generate valid JSON"
         exit 1
     fi
 
 ) 200>"$LOCK_FILE"
-
-# Clean up lock file
-rm -f "$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