ci+build: CI 改用 Maven 4 wrapper（POM 4.1.0）；okhttp3-extension 2.0.x.20260730→2.0.x.20260630（Central 可解析，20260730 仅私服快照）

Author: loong10k

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
           cache: maven
 
       - name: Build and verify with JaCoCo coverage gate
-        run: mvn -B --no-transfer-progress clean verify
+        run: ./mvnw -B --no-transfer-progress clean verify
 
       - name: Upload JaCoCo coverage report
         if: always()

pom.xml

@@ -50,7 +50,7 @@
         <junit.version>4.13.2</junit.version>
         <lombok.version>1.18.46</lombok.version>
         <okhttp.version>5.4.0</okhttp.version>
-        <okhttp3-extension.version>2.0.x.20260730</okhttp3-extension.version>
+        <okhttp3-extension.version>2.0.x.20260630</okhttp3-extension.version>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <slf4j.version>2.0.18</slf4j.version>