fix(web): rank remaining-minute probes by split and match choice kind

Choice cards used a hardcoded domain menu and always asked existence.
Rank scoring layers by remaining-minute entropy, keep finance and health
volunteer-only, and ask D9/D10 style or exam quality so taps match outcomes.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/rectification/refinement_packet.py

@@ -77,11 +77,18 @@ def _features(built: dict[str, Any]) -> list[dict[str, Any]]:
     return rows
 
 
+def _sign_name(index: int | None) -> str | None:
+    if isinstance(index, int) and 0 <= index <= 11:
+        return SIGNS_CN[SIGNS[index]]
+    return None
+
+
 def _sign_names(indices: set[int]) -> list[str]:
     names: list[str] = []
     for idx in sorted(indices):
-        if isinstance(idx, int) and 0 <= idx <= 11:
-            names.append(SIGNS_CN[SIGNS[idx]])
+        name = _sign_name(idx)
+        if name:
+            names.append(name)
     return names
 
 
@@ -207,11 +214,17 @@ def window_scan(
                 before = previous[layer]
                 after = current[layer]
                 if isinstance(before, int) and isinstance(after, int) and before != after:
-                    transitions.append({
+                    row = {
                         "layer": layer,
                         "at": time,
                         "user_meaning": f"{label} 在 {time} 发生变化",
-                    })
+                    }
+                    from_sign = _sign_name(before)
+                    to_sign = _sign_name(after)
+                    if from_sign and to_sign:
+                        row["from_sign"] = from_sign
+                        row["to_sign"] = to_sign
+                    transitions.append(row)
         previous = current
     payload: dict[str, Any] = {
         "scanned": True,