fix(ci): propcache 0.5.4 re-pin (upstream churn within the hour) + pyright warning baseline 448→454 (CI-resolution drift with new pins; T14H-class skew documented — systemic env-determinism fix deferred to retrofit tranche)

pyright-baseline.json

@@ -1,5 +1,5 @@
 {
   "errorCount": 117,
-  "warningCount": 448,
+  "warningCount": 454,
   "informationCount": 0
 }

requirements-ci.txt

@@ -70,7 +70,7 @@ pluggy==1.6.0
     # via
     #   diff-cover
     #   pytest
-propcache==0.5.3
+propcache==0.5.4
     # via
     #   aiohttp
     #   yarl