fix(rawcli): identify false-positives on 15693/LF; retry 14a

With only a MIFARE Classic present, identify randomly reported ISO15693
(bogus UID) or "LF tag" — because a flaky-link 14a miss fell through to
lenient checks:
- 15693 accepted any `uid` even without `found`; now requires found AND a
  real E0-prefixed UID (a 14a miss leaves non-E0 garbage).
- LF reported a tag whenever lf.search() returned its (always-truthy)
  sample-capture result; it can't confirm a tag without demod, so drop it
  from identify (reliable LF detection is a follow-up).
- Retry the 14a scan (up to 3x) so a transient miss doesn't fall through.

3 tests (E0-gated 15693, bogus-UID + false-LF rejection).

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

tests/test_rawcli.py

@@ -209,12 +209,25 @@ class TestIdentify:
         assert r["version"] == NTAG216_VERSION.hex()
         s.device.hf.iso14a.raw.assert_called_with(b"\x60", flags=0x20)   # real GET_VERSION+CRC
 
-    def test_15693_fallback(self):
-        s = RawSession(device=_mock_device(scan15={"found": True, "uid": b"\xE0\x04"}))
+    def test_15693_when_e0_uid(self):
+        s = RawSession(device=_mock_device(scan15={"found": True, "uid": "e004010203040506"}))
         r = identify(s)
         assert r["found"] and s.field == "hf" and s.protocol == "hf15"
         assert s.transponder == "ISO15693"
 
+    def test_15693_rejects_bogus_uid(self):
+        # a flaky 14a miss can leave a non-E0 "uid" — must NOT be reported as a 15693 tag
+        s = RawSession(device=_mock_device(scan15={"found": True, "uid": "0000000000003d42"}))
+        r = identify(s)
+        assert r["found"] is False and s.transponder is None
+
+    def test_no_false_lf(self):
+        # nothing on HF and lf.search() truthy must report not-found, not a bogus "LF tag"
+        dev = _mock_device()
+        dev.lf.search.return_value = object()      # always-truthy search result
+        s = RawSession(device=dev)
+        assert identify(s)["found"] is False and s.transponder is None
+
     def test_sak_names_from_an10833(self):
         assert name_14a({"sak": 0x18}) == "MIFARE Classic 4K"
         assert name_14a({"sak": 0x20}).startswith("ISO14443-4")