fix: Tolerate diacritic/case/whitespace mismatches in Person column matching

- Add canonical_member_key() in match_payments.py to normalize names via
  NFKD + lowercase + whitespace-collapse before ledger lookup; resolves
  payments attributed to e.g. "Maria Maco" to canonical "Mária Maco".
  Emits logger.info when a non-canonical cell is rescued so sheet typos
  are visible in logs without losing the payment allocation.
- Extend group_payments_by_person() in app.py to accept member_names and
  re-key raw-payment groups under the canonical attendance-sheet name so
  the modal's Raw Payments debug section also finds the row correctly.
- Add raw payments collapsible section to member detail modal in adults.html
  and juniors.html for debugging payment attribution issues.
- Remove 4 obsolete tests targeting routes /fees, /fees-juniors, /reconcile,
  /reconcile-juniors that no longer exist; add test_match_payments.py
  covering canonical key equivalence and reconcile() tolerance end-to-end.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/test_match_payments.py

@@ -0,0 +1,69 @@
+import unittest
+
+from scripts.match_payments import canonical_member_key, reconcile
+
+
+class TestCanonicalMemberKey(unittest.TestCase):
+    def test_diacritics_and_case_collapse(self):
+        self.assertEqual(canonical_member_key("Mária Maco"), "maria maco")
+        self.assertEqual(canonical_member_key("MARIA MACO"), "maria maco")
+        self.assertEqual(canonical_member_key("maria maco"), "maria maco")
+
+    def test_whitespace_runs_collapse(self):
+        self.assertEqual(canonical_member_key("Mária  Maco"), "maria maco")
+        self.assertEqual(canonical_member_key("  Mária Maco  "), "maria maco")
+
+    def test_unknown_name_passes_through_normalized(self):
+        # Two genuinely different names must not collide.
+        self.assertNotEqual(
+            canonical_member_key("Mária Maco"),
+            canonical_member_key("Marek Maco"),
+        )
+
+
+class TestReconcileTolerantPersonMatching(unittest.TestCase):
+    def _members(self):
+        return [("Mária Maco", "A", {"2026-04": (750, 4)})]
+
+    def _tx(self, person):
+        return {
+            "date": "2026-04-15",
+            "amount": 750,
+            "person": person,
+            "purpose": "2026-04",
+            "inferred_amount": 750,
+            "sender": "Maco Family",
+            "message": "fee",
+        }
+
+    def test_person_without_diacritics_matches(self):
+        result = reconcile(self._members(), ["2026-04"], [self._tx("Maria Maco")], {})
+
+        member = result["members"]["Mária Maco"]
+        self.assertEqual(member["months"]["2026-04"]["paid"], 750)
+        self.assertEqual(len(member["months"]["2026-04"]["transactions"]), 1)
+        self.assertEqual(result["unmatched"], [])
+
+    def test_person_with_extra_whitespace_matches(self):
+        result = reconcile(self._members(), ["2026-04"], [self._tx("Mária  Maco")], {})
+
+        self.assertEqual(result["members"]["Mária Maco"]["months"]["2026-04"]["paid"], 750)
+        self.assertEqual(result["unmatched"], [])
+
+    def test_person_lowercase_matches(self):
+        result = reconcile(self._members(), ["2026-04"], [self._tx("mária maco")], {})
+
+        self.assertEqual(result["members"]["Mária Maco"]["months"]["2026-04"]["paid"], 750)
+        self.assertEqual(result["unmatched"], [])
+
+    def test_truly_unknown_person_still_unmatched(self):
+        result = reconcile(
+            self._members(), ["2026-04"], [self._tx("Někdo Neznámý")], {}
+        )
+
+        self.assertEqual(result["members"]["Mária Maco"]["months"]["2026-04"]["paid"], 0)
+        self.assertEqual(len(result["unmatched"]), 1)
+
+
+if __name__ == "__main__":
+    unittest.main()