chore(ci): replace SonarCloud with Codacy for code quality badge

SonarCloud OAuth was not working. Codacy connects via GitHub App
with no token/plugin setup required.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: mferretti

.github/workflows/build.yml

@@ -32,12 +32,6 @@ jobs:
     - name: Run tests with coverage
       run: ./gradlew test jacocoTestReport
 
-    - name: Analyze with SonarCloud
-      env:
-        SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      run: ./gradlew sonar
-
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v5
       with:

README.md

@@ -2,7 +2,7 @@
 
 [![Build Status](https://github.com/mferretti/SeedStream/actions/workflows/build.yml/badge.svg)](https://github.com/mferretti/SeedStream/actions/workflows/build.yml)
 [![Security Scan](https://github.com/mferretti/SeedStream/actions/workflows/security.yml/badge.svg)](https://github.com/mferretti/SeedStream/actions/workflows/security.yml)
-[![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=mferretti_SeedStream&metric=alert_status)](https://sonarcloud.io/summary/new_code?id=mferretti_SeedStream)
+[![Codacy Badge](https://app.codacy.com/project/badge/Grade/5ddc8a45a98c4ea4b5a8968152634f2f)](https://app.codacy.com/gh/mferretti/SeedStream/dashboard?utm_source=gh&utm_medium=referral&utm_content=&utm_campaign=Badge_grade)
 [![Java Version](https://img.shields.io/badge/Java-21-blue.svg)](https://www.oracle.com/java/technologies/javase/jdk21-archive-downloads.html)
 [![Gradle](https://img.shields.io/badge/Gradle-9.4-brightgreen.svg)](https://gradle.org)
 [![License](https://img.shields.io/badge/License-Apache%202.0-orange.svg)](LICENSE)

build.gradle.kts

@@ -7,7 +7,6 @@ plugins {
     alias(libs.plugins.spotless) apply false
     alias(libs.plugins.spotbugs) apply false
     alias(libs.plugins.dependency.check) apply false
-    alias(libs.plugins.sonarqube)
 }
 
 allprojects {
@@ -20,19 +19,6 @@ allprojects {
     }
 }
 
-sonar {
-    properties {
-        property("sonar.projectKey", "mferretti_SeedStream")
-        property("sonar.organization", "mferretti")
-        property("sonar.host.url", "https://sonarcloud.io")
-        property("sonar.java.source", "21")
-        // Aggregate JaCoCo XML reports from all submodules
-        property("sonar.coverage.jacoco.xmlReportPaths", "**/build/reports/jacoco/test/jacocoTestReport.xml")
-        // Exclude benchmarks module and generated sources from analysis
-        property("sonar.exclusions", "benchmarks/**,**/generated/**")
-    }
-}
-
 // Custom task to run dependency-check on all subprojects
 // Note: dependencyCheckAggregate doesn't scan Gradle dependencies properly
 // We use dependencyCheckAnalyze on each module instead

gradle/libs.versions.toml

@@ -46,7 +46,6 @@ lombok-plugin = "9.2.0"
 spotless-plugin = "8.3.0"
 spotbugs-plugin = "6.4.8"
 dependency-check-plugin = "12.2.0"
-sonarqube-plugin = "4.4.1.3373"
 
 [libraries]
 # Lombok
@@ -147,4 +146,3 @@ lombok = { id = "io.freefair.lombok", version.ref = "lombok-plugin" }
 spotless = { id = "com.diffplug.spotless", version.ref = "spotless-plugin" }
 spotbugs = { id = "com.github.spotbugs", version.ref = "spotbugs-plugin" }
 dependency-check = { id = "org.owasp.dependencycheck", version.ref = "dependency-check-plugin" }
-sonarqube = { id = "org.sonarqube", version.ref = "sonarqube-plugin" }