logs: replace and system_pull_real PASS; mint_fail's one FAIL was the test's -- it counted the first boot's mint in the second boot's log (#92, 5.6) [skip ci]

mint_fail's own checks passed (failed -- nothing changed, the screen again, the old stick logs in); the check now expects none in this boot's log.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GE3SDvQn5EoxdGufk84zz2

scripts/qemu_session.py

@@ -782,7 +782,8 @@ elif m in ("replace", "mint_fail", "system_pull_real"):
             wait_for(r"MINT-ZUSE: type YES to write it", 120)
             type_line("YES")
             check("MINT-ZUSE: failed -- nothing changed", wait_for(r"MINT-ZUSE: failed -- nothing changed", 300), near=r"MINT-ZUSE")
-            check("no replacement minted", count(r"real Zuse minted") == 1)
+            # each boot has its own serial log: this one is the second boot's
+            check("no replacement minted (none in this boot's log)", count(r"real Zuse minted") == 0)
             check("the fixed screen again", wait_for(SCREEN0, 60, shots))
             qcmd("device_del", id="stickdev2")
             time.sleep(3)