ci: integrate Detekt static analysis tool (#493)

- Add Detekt configuration (`detekt.yml`) with custom rules
- Apply Detekt plugin to all subprojects
- Configure Detekt tasks in Gradle workflow
- Update Gradle dependency versions to include Detekt plugin

## Motivation and Context
Enhance static code analysis for improved code quality.

## Breaking Changes

No

## Types of changes

- [x] CI update
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

.github/workflows/codeql.yml

@@ -71,6 +71,7 @@ jobs:
             :kotlin-sdk:compileKotlinJvm \
             :integration-test:compileKotlinJvm \
             :conformance-test:testClasses \
+            detekt \
             -Pkotlin.incremental=false \
             --no-daemon --stacktrace --rerun-tasks
 

.gitignore

@@ -11,13 +11,15 @@ build/
 .idea/compiler.xml
 .idea/libraries/
 .idea
-!.idea/icon.png
 *.iws
 *.iml
 *.ipr
 out/
 !**/src/main/**/out/
 !**/src/test/**/out/
+!.idea/icon.png
+!.idea/detekt.xml
+!.idea/externalDependencies.xml
 
 ### Kotlin ###
 .kotlin

.idea/detekt.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DetektPluginSettings">
+    <option name="configurationFiles">
+      <list>
+        <option value="$PROJECT_DIR$/detekt.yml" />
+      </list>
+    </option>
+    <option name="enableDetekt" value="true" />
+    <option name="enableForProjectResult" value="Accepted" />
+    <option name="redirectChannels" value="true" />
+    <option name="treatAsErrors" value="true" />
+  </component>
+</project>

.idea/externalDependencies.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+    <component name="ExternalDependencies">
+        <plugin id="detekt" />
+        <plugin id="com.nbadal.ktlint" />
+    </component>
+</project>

.idea/ktlint-plugin.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="com.nbadal.ktlint.KtlintProjectSettings">
+    <ktlintMode>DISTRACT_FREE</ktlintMode>
+    <ktlintRulesetVersion>DEFAULT</ktlintRulesetVersion>
+  </component>
+</project>

build.gradle.kts

@@ -1,5 +1,8 @@
+import dev.detekt.gradle.extensions.FailOnSeverity
+
 plugins {
     id("mcp.dokka")
+    alias(libs.plugins.detekt)
     alias(libs.plugins.ktlint)
     alias(libs.plugins.kover)
 }
@@ -18,6 +21,13 @@ dependencies {
 subprojects {
     apply(plugin = "org.jlleitschuh.gradle.ktlint")
     apply(plugin = "org.jetbrains.kotlinx.kover")
+    apply(plugin = "dev.detekt")
+
+    detekt {
+        config = files("$rootDir/detekt.yml")
+        buildUponDefaultConfig = true
+        failOnSeverity.set(FailOnSeverity.Never)
+    }
 }
 
 dokka {

buildSrc/src/main/kotlin/mcp.multiplatform.gradle.kts

@@ -61,3 +61,12 @@ kotlin {
     explicitApi = ExplicitApiMode.Strict
     jvmToolchain(21)
 }
+
+tasks.named("detekt").configure {
+    dependsOn(
+        "detektMainJvm",
+        "detektCommonMainSourceSet",
+        "detektTestJvm",
+        "detektCommonTestSourceSet",
+    )
+}

detekt.yml

@@ -0,0 +1,7 @@
+config:
+  validation: true
+  warningsAsErrors: true
+
+complexity:
+  LongMethod:
+    excludes: ['**Test.kt']

gradle/libs.versions.toml

@@ -1,13 +1,14 @@
 [versions]
 # plugins version
-kotlin = "2.2.21"
-dokka = "2.1.0"
 atomicfu = "0.29.0"
-ktlint = "14.0.1"
-kover = "0.9.4"
-netty = "4.2.9.Final"
-mavenPublish = "0.35.0"
 binaryCompatibilityValidatorPlugin = "0.18.1"
+detekt = "2.0.0-alpha.1"
+dokka = "2.1.0"
+kotlin = "2.2.21"
+kover = "0.9.4"
+ktlint = "14.0.1"
+mavenPublish = "0.35.0"
+netty = "4.2.9.Final"
 openapi-generator = "7.18.0"
 
 # libraries version
@@ -69,6 +70,7 @@ ktor-client-cio = { group = "io.ktor", name = "ktor-client-cio", version.ref = "
 ktor-server-cio = { group = "io.ktor", name = "ktor-server-cio", version.ref = "ktor" }
 
 [plugins]
+detekt = { id = "dev.detekt", version.ref = "detekt" }
 kotlinx-binary-compatibility-validator = { id = "org.jetbrains.kotlinx.binary-compatibility-validator", version.ref = "binaryCompatibilityValidatorPlugin" }
 kover = { id = "org.jetbrains.kotlinx.kover", version.ref = "kover" }
 ktlint = { id = "org.jlleitschuh.gradle.ktlint", version.ref = "ktlint" }