feat(explorer): restructure SVD tab — pole-split motions, party axis chart, inline expanders with voting

explorer.py

@@ -929,62 +929,90 @@ def build_svd_components_tab(db_path: str) -> None:
     )
     comp_sel = comp_options[comp_sel_idx]
 
-    # Show theme explanation + poles
+    # Show theme explanation
     theme = SVD_THEMES.get(comp_sel, {})
     if theme:
         st.info(f"**{theme['label']}** — {theme['explanation']}")
-        pos = theme.get("positive_pole", "")
-        neg = theme.get("negative_pole", "")
-        if pos or neg:
-            pcol, ncol = st.columns(2)
-            with pcol:
-                st.success(f"▲ **Positieve pool:** {pos}")
-            with ncol:
-                st.error(f"▼ **Negatieve pool:** {neg}")
 
     motions = comp_map.get(comp_sel, [])
 
-    col1, col2 = st.columns([1, 2])
-    with col1:
-        st.markdown("**Top-moties (titels)**")
-        for m in motions:
-            mid = m.get("motion_id")
-            score = m.get("score", 0.0)
-            title = m.get("title") or f"Motie #{mid}"
-            sign = "▲" if score >= 0 else "▼"
-            if st.button(f"{sign} {mid}: {title[:72]}", key=f"btn_{comp_sel}_{mid}"):
-                st.session_state["svd_selected_mid"] = mid
+    # Party axis chart
+    party_scores = load_party_axis_scores(db_path)
+    _render_party_axis_chart(party_scores, comp_sel)
 
-    with col2:
-        sel_mid = st.session_state.get("svd_selected_mid")
-        if not sel_mid and motions:
-            sel_mid = motions[0].get("motion_id")
-    if sel_mid:
-        # fetch motion metadata from DB for completeness
+    # Batch-fetch motion details (title, date, policy_area, url, body_text, voting_results)
+    motion_ids = [m.get("motion_id") for m in motions if m.get("motion_id") is not None]
+    motion_details: Dict[int, tuple] = {}
+    if motion_ids:
         try:
+            placeholders = ", ".join("?" for _ in motion_ids)
             con = duckdb.connect(database=db_path, read_only=True)
-            row = con.execute(
-                "SELECT id, title, date, policy_area, url, body_text FROM motions WHERE id=?",
-                [int(sel_mid)],
-            ).fetchone()
+            db_rows = con.execute(
+                f"SELECT id, title, date, policy_area, url, body_text, voting_results "
+                f"FROM motions WHERE id IN ({placeholders})",
+                [int(mid) for mid in motion_ids],
+            ).fetchall()
             con.close()
+            motion_details = {r[0]: r for r in db_rows}
         except Exception:
-            row = None
-
-        if row:
-            st.markdown(f"### {row[1] or f'Motie #{row[0]}'}")
-            try:
-                date_str = str(row[2])[:10]
-            except Exception:
-                date_str = "?"
-            st.caption(f"📅 {date_str}  |  {row[3]}")
-            if row[4] and str(row[4]).startswith("http"):
-                st.markdown(f"[🔗 Bekijk op Tweede Kamer]({row[4]})")
-            if row[5]:
-                with st.expander("Toon volledige tekst"):
-                    st.write(row[5])
-        else:
-            st.info(f"Metadata not found in DB for motion {sel_mid}")
+            logger.exception("Failed to batch-fetch motion details")
+
+    # Split motions by pole sign
+    pos_motions = [m for m in motions if float(m.get("score", 0.0)) >= 0]
+    neg_motions = [m for m in motions if float(m.get("score", 0.0)) < 0]
+
+    pos_pole = (
+        theme.get("positive_pole", "Positieve pool") if theme else "Positieve pool"
+    )
+    neg_pole = (
+        theme.get("negative_pole", "Negatieve pool") if theme else "Negatieve pool"
+    )
+
+    pcol, ncol = st.columns(2)
+
+    with pcol:
+        st.success(f"▲ **Positieve pool:** {pos_pole}")
+        for m in pos_motions:
+            mid = m.get("motion_id")
+            raw_title = m.get("title") or f"Motie #{mid}"
+            with st.expander(f"▲ {raw_title[:80]}"):
+                row = motion_details.get(int(mid)) if mid is not None else None
+                if row:
+                    try:
+                        date_str = str(row[2])[:10]
+                    except Exception:
+                        date_str = "?"
+                    st.caption(f"📅 {date_str}  |  {row[3] or '—'}")
+                    if row[4] and str(row[4]).startswith("http"):
+                        st.markdown(f"[🔗 Bekijk op Tweede Kamer]({row[4]})")
+                    if row[5]:
+                        with st.expander("Toon volledige tekst"):
+                            st.write(row[5])
+                    _render_voting_results(row[6])
+                else:
+                    st.caption("_Geen metadata beschikbaar_")
+
+    with ncol:
+        st.error(f"▼ **Negatieve pool:** {neg_pole}")
+        for m in neg_motions:
+            mid = m.get("motion_id")
+            raw_title = m.get("title") or f"Motie #{mid}"
+            with st.expander(f"▼ {raw_title[:80]}"):
+                row = motion_details.get(int(mid)) if mid is not None else None
+                if row:
+                    try:
+                        date_str = str(row[2])[:10]
+                    except Exception:
+                        date_str = "?"
+                    st.caption(f"📅 {date_str}  |  {row[3] or '—'}")
+                    if row[4] and str(row[4]).startswith("http"):
+                        st.markdown(f"[🔗 Bekijk op Tweede Kamer]({row[4]})")
+                    if row[5]:
+                        with st.expander("Toon volledige tekst"):
+                            st.write(row[5])
+                    _render_voting_results(row[6])
+                else:
+                    st.caption("_Geen metadata beschikbaar_")
 
 
 def build_mp_quiz_tab(db_path: str) -> None: