feat: recompute SVD for full current parliament (2023-11-22 to 2026-03-17)

Adds new SVD window 'current_parliament' covering 8732 motions and 451 MPs
(vs 7424 motions in old '2025' window, adding ~1300 motions from 2025-Q4+).
Updates explorer.py to query the new window. Regenerates top_svd_top_motions.json.
Also clarifies axis 3 explanation noting FVD's anti-American positioning.

explorer.py

@@ -206,13 +206,13 @@ def load_party_map(db_path: str) -> Dict[str, str]:
 
 @st.cache_data(show_spinner="Partijposities op SVD-assen laden…")
 def load_party_axis_scores(db_path: str) -> Dict[str, List[float]]:
-    """Return per-party SVD vectors for window='2025'.
+    """Return per-party SVD vectors for window='current_parliament'.
 
-    Queries svd_vectors WHERE entity_type='mp' AND window_id='2025'
+    Queries svd_vectors WHERE entity_type='mp' AND window_id='current_parliament'
     AND entity_id is a known current-parliament party.
 
     Returns:
-        {party_name: [float * k]}  — k = 50 for the canonical 2025 window.
+        {party_name: [float * k]}  — k = 50 for the canonical current_parliament window.
         Duplicate rows for the same party are de-duplicated (last row wins).
     """
     try:
@@ -221,7 +221,7 @@ def load_party_axis_scores(db_path: str) -> Dict[str, List[float]]:
         placeholders = ", ".join("?" for _ in party_list)
         rows = con.execute(
             f"SELECT entity_id, vector FROM svd_vectors "
-            f"WHERE entity_type='mp' AND window_id='2025' "
+            f"WHERE entity_type='mp' AND window_id='current_parliament' "
             f"AND entity_id IN ({placeholders})",
             party_list,
         ).fetchall()
@@ -829,6 +829,10 @@ def build_svd_components_tab(db_path: str) -> None:
                 "bijzonder scherpe polarisatie, waarbij links-progressieve en christelijk-sociale partijen "
                 "(SP, D66, GL, DENK, CU, PvdA, CDA, NSC) tegenover rechts-nationalistisch georiënteerde "
                 "partijen (PVV, BBB, VVD-rechtsflank, JA21) staan. "
+                "Opvallend: FVD scoort ook aan de solidariteitskant, niet vanuit humanitaire overtuiging "
+                "maar vanwege hun anti-Amerikaans/pro-Russisch buitenlandbeleid — zij stemden vóór "
+                "opheffing van Amerikaanse sancties tegen Syrië om dezelfde reden als DENK en SP, "
+                "maar vanuit een heel andere politieke logica."
             ),
             "positive_pole": "Internationale solidariteit, inclusie en pragmatische overheidsinterventie",
             "negative_pole": "Strikte handhaving, deregulering en nationalistisch eigenbelang boven humanitaire verplichtingen",