Fix inherited contract handling and document smoke test blockers

src/taetigkeitsnachweis/matcher.py

@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import re
+import unicodedata
 from typing import Any
 
 from .errors import ValidationError
@@ -21,7 +22,30 @@ def calculate_foerderquote_percent(allocation: AllocationRecord, precision: int
 
 def _normalize_name(name: str) -> str:
     compact = re.sub(r"\s+", " ", name.strip())
-    return compact.casefold()
+    no_accents = "".join(
+        ch for ch in unicodedata.normalize("NFKD", compact) if not unicodedata.combining(ch)
+    )
+    return no_accents.casefold()
+
+
+def _name_keys(name: str) -> set[str]:
+    normalized = _normalize_name(name)
+    keys = {normalized}
+
+    if "," in normalized:
+        last_name, first_name = [part.strip() for part in normalized.split(",", 1)]
+        if first_name and last_name:
+            keys.add(f"{first_name} {last_name}")
+            keys.add(f"{last_name}, {first_name}")
+    else:
+        tokens = normalized.split()
+        if len(tokens) >= 2:
+            first_name = tokens[0]
+            last_name = tokens[-1]
+            keys.add(f"{first_name} {last_name}")
+            keys.add(f"{last_name}, {first_name}")
+
+    return {re.sub(r"\s+", " ", key).strip() for key in keys if key.strip()}
 
 
 def _with_tolerance(
@@ -43,14 +67,19 @@ def match_assignments(
 
     master_by_name: dict[str, list[MasterDataRecord]] = {}
     for record in masterdata_records:
-        master_by_name.setdefault(_normalize_name(record.name), []).append(record)
+        for key in _name_keys(record.name):
+            master_by_name.setdefault(key, []).append(record)
 
     matched: list[MatchedAssignment] = []
     issues: list[ValidationIssue] = []
 
     for allocation in allocation_records:
-        normalized_name = _normalize_name(allocation.employee_name)
-        candidates = master_by_name.get(normalized_name, [])
+        candidate_map: dict[str, MasterDataRecord] = {}
+        for key in _name_keys(allocation.employee_name):
+            for candidate in master_by_name.get(key, []):
+                candidate_map[candidate.record_id] = candidate
+
+        candidates = list(candidate_map.values())
         if not candidates:
             issues.append(
                 ValidationIssue(