fix(import): Eltern-/Herkunft-/Dubletten-Korrekturen — Ticket-Triage Cluster

Akane (Roni=Vater male + Mutter Fumi), Sunny (Bill+Melly), Danielle (Mutter Ella,
motherDob-Disambiguierung), Cherry Berry (female), Black-Forest-Label vereinheitlicht,
namenloser Bock entdoppelt (mergeExternalRefs).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tools/import/extract.py

@@ -1151,7 +1151,10 @@ def apply_conflict_decisions(merged, conflicts, path):
             if d.get("father"):
                 new_refs.append({
                     "name": d["father"],
-                    "dob": "",
+                    # Optional fatherDob disambiguates a parent when several
+                    # same-named animals exist (the downstream resolver matches
+                    # name AND, when given, dob — e.g. two „Ella“).
+                    "dob": d.get("fatherDob", ""),
                     "roleGuess": "father",
                     "method": "decision",
                     "confidence": "high"
@@ -1159,7 +1162,7 @@ def apply_conflict_decisions(merged, conflicts, path):
             if d.get("mother"):
                 new_refs.append({
                     "name": d["mother"],
-                    "dob": "",
+                    "dob": d.get("motherDob", ""),
                     "roleGuess": "mother",
                     "method": "decision",
                     "confidence": "high"