feat(normalizer): add row parser to persons_tree

tools/import-normalizer/persons_tree.py

@@ -128,3 +128,48 @@ def _resolve_one(raw: str, index: dict[str, list[str]]) -> tuple[str | None, str
     if len(hits) == 0:
         return None, "not_found"
     return None, "ambiguous"
+
+
+def _parse_row(row_num: int, fields: dict) -> dict:
+    """Produce one person record from a header-mapped row dict.
+
+    Internal keys prefixed with '_' are stripped before JSON output in main().
+    """
+    def s(key: str) -> str:
+        return (fields.get(key) or "").strip()
+
+    birth_raw = s("birth_date")
+    death_raw = s("death_date")
+
+    birth_year = _parse_year(birth_raw)
+    death_year = _parse_year(death_raw)
+
+    notes_parts = []
+    if birth_raw and birth_year is None:
+        notes_parts.append(f"[Geburtsdatum: {birth_raw}]")
+    if death_raw and death_year is None:
+        notes_parts.append(f"[Todesdatum: {death_raw}]")
+    bemerkung = s("notes")
+    if bemerkung:
+        notes_parts.append(bemerkung)
+
+    maiden = s("maiden_name") or None
+    spouse = s("spouse") or None
+    bemerkung_out = bemerkung or None
+
+    return {
+        "rowId": f"row_{row_num:03d}",
+        "firstName": s("first_name"),
+        "lastName": s("last_name"),
+        "maidenName": maiden,
+        "alias": None,
+        "notes": " ".join(notes_parts) or None,
+        "birthYear": birth_year,
+        "deathYear": death_year,
+        "birthPlace": s("birth_place") or None,
+        "deathPlace": s("death_place") or None,
+        "generation": _parse_generation(s("generation")),
+        "familyMember": True,
+        "_spouse_raw": spouse,
+        "_bemerkung_raw": bemerkung_out,
+    }