fix: pass annual-only windows to compute_nd_axes in SVD components tab

_get_aligned_party_scores and _get_aligned_trajectory_scores both called
compute_nd_axes() with no window_ids, which defaulted to _load_window_ids()
returning ALL windows including quarterly. This caused the SVD component 1
bar chart to disagree with the compass (which correctly used annual-only
windows via get_uniform_dim_windows). D66 appeared between GL-PvdA and PvdD
in component 1 because quarterly windows contaminated the PCA basis.

explorer.py

@@ -633,8 +633,10 @@ def _get_aligned_trajectory_scores(
     """
     from analysis.political_axis import compute_nd_axes
 
-    # Get aligned scores for all windows via PCA
+    # Get aligned scores for the requested windows via PCA (annual-only, no quarterly)
-    scores_by_window, _ = compute_nd_axes(db_path, n_components=n_components)
+    scores_by_window, _ = compute_nd_axes(
+        db_path, window_ids=windows, n_components=n_components
+    )
     if not scores_by_window:
         return {}
 
@@ -2634,7 +2636,10 @@ def build_svd_components_tab(db_path: str) -> None:
         """Get party scores for all N components from aligned PCA positions."""
         from analysis.political_axis import compute_nd_axes
 
-        scores_by_window, _ = compute_nd_axes(db_path, n_components=10)
+        annual_windows = get_uniform_dim_windows(db_path)
+        scores_by_window, _ = compute_nd_axes(
+            db_path, window_ids=annual_windows, n_components=10
+        )
         window_scores = scores_by_window.get(window, {})
         if not window_scores:
             return {}