EDU-7052: Introduce ai-hints-core & ai-hints-kotlin Modules

Both modules are located in `:intellij-plugin:features`, since the entire AI Hints feature basically implements new logic rather than modifying the existing `educational-core` codebase. This allows us to avoid using internal implementations of the feature in the core module (and even external APIs such as `educational-ml-library` that exist only for this feature).

gradle/libs.versions.toml

@@ -4,7 +4,6 @@ jackson = "2.17.2"
 kotlin = "2.0.0"
 okhttp = "4.12.0"
 retrofit = "2.9.0"
-educational-ml-library = "1.0.25"
 
 [libraries]
 annotations = { group = "org.jetbrains", name = "annotations", version = "23.0.0" }

intellij-plugin/AI/resources/AI.xml

@@ -20,22 +20,6 @@
     <action id="Educational.UpdateCourseTranslation"
             class="com.jetbrains.edu.ai.translation.action.UpdateCourseTranslation"
             internal="true"/>
-
-    <action id="Educational.Hints.GetHint"
-            class="com.jetbrains.edu.ai.hints.action.GetHint"
-            internal="true"/>
-
-    <action id="Educational.Hints.AcceptHint"
-            class="com.jetbrains.edu.ai.hints.action.AcceptHint"
-            internal="true">
-      <add-to-group group-id="Diff.ViewerToolbar" anchor="before" relative-to-action="Educational.Hints.CancelHint"/>
-    </action>
-
-    <action id="Educational.Hints.CancelHint"
-            class="com.jetbrains.edu.ai.hints.action.CancelHint"
-            internal="true">
-      <add-to-group group-id="Diff.ViewerToolbar" anchor="after" relative-to-action="Educational.Hints.AcceptHint"/>
-    </action>
   </actions>
 
   <extensionPoints>
@@ -60,8 +44,6 @@
     <registryKey key="edu.ai.translation.update.check.interval"
                  description="Sets the course translation update check interval in seconds"
                  defaultValue="3600"/>
-
-    <registryKey defaultValue="true" description="Makes Get Hint action available (Kotlin courses only)" key="ai.get.hint.action"/>
   </extensions>
 
   <extensions defaultExtensionNs="Educational">

intellij-plugin/AI/resources/messages/EduAIBundle.properties

@@ -1,24 +1,8 @@
 action.Educational.AITranslation.text=AI Translation
 action.Educational.EduAIServiceChangeHost.text=Change Educational AI Service URL
 action.Educational.ResetCourseTranslation.text=Reset Course Translation
-
-action.Educational.Hints.AcceptHint.text=Accept Hint
-action.Educational.Hints.AcceptHint.notification.failed.text=Hint could not be applied due to an error
-action.Educational.Hints.AcceptHint.notification.failed.title=Failed to Apply Hint
-action.Educational.Hints.AcceptHint.notification.success.text=Hint was successfully applied to local files
-action.Educational.Hints.AcceptHint.notification.success.title=Successfully Applied Hint
-
 action.Educational.UpdateCourseTranslation.text=Update Course Translation
 
-action.Educational.Hints.GetHint.text=Get Hint
-action.Educational.Hints.GetHint.already.in.progress=Getting the hint is already in progress
-action.Educational.Hints.GetHint.current.solution=Current solution
-action.Educational.Hints.GetHint.diff.title=AI Hint
-action.Educational.Hints.GetHint.error.unknown=Couldn't help you right now. An unexpected error occurred, please try again!
-action.Educational.Hints.GetHint.progress.text=Getting hint
-action.Educational.Hints.GetHint.show.code.text=Show in code
-action.Educational.Hints.GetHint.solution.after.changes=Solution after changes
-
 ai.service.change.host.choose.server.label=Choose server:
 ai.service.change.host.specify.url.label=Specify full URL:
 ai.service.other=Other
@@ -43,8 +27,6 @@ ai.translation.translation.is.up.to.date=The translation is already up to date
 ai.translation.translation.has.been.updated=The translation has been updated to the latest version
 ai.translation.update.course.translation=Updating course translation
 
-hints.label.ai.generated.content.tooltip=This is AI-generated content
-
 settings.ai=AI
 settings.ai.auto.translate=Automatically translate courses to the preferred language
 settings.ai.translation.display.name=Course Translation

intellij-plugin/AI/src/com/jetbrains/edu/ai/ui/EducationalAIIcons.java

@@ -15,7 +15,6 @@ public final class EducationalAIIcons {
     return IconLoader.getIcon(path, EducationalAIIcons.class);
   }
 
-  public static final Icon Hint = load("/icons/com/jetbrains/edu/ai/actions/hint.svg");
   public static final Icon Translation = load("/icons/com/jetbrains/edu/ai/actions/translation.svg");
   public static final Icon TranslationEnabled = load("/icons/com/jetbrains/edu/ai/actions/translation_enabled.svg");
   public static final Icon TranslationHovered = load("/icons/com/jetbrains/edu/ai/actions/translation_hovered.svg");

intellij-plugin/Edu-Kotlin/resources/Edu-Kotlin.xml

@@ -13,12 +13,6 @@
     <configurator implementationClass="com.jetbrains.edu.kotlin.KtConfigurator" language="kotlin"/>
     <twitterPluginConfigurator implementation="com.jetbrains.edu.kotlin.twitter.KtTwitterConfigurator"/>
     <mainFileProvider language="kotlin" implementationClass="com.jetbrains.edu.kotlin.KtMainFileProvider"/>
-    <functionSignaturesProvider language="kotlin" implementationClass="com.jetbrains.edu.kotlin.hints.KtFunctionSignaturesProvider"/>
-    <functionSignatureResolver language="kotlin" implementationClass="com.jetbrains.edu.kotlin.hints.KtFunctionSignatureResolver"/>
-    <filesDiffer language="kotlin" implementationClass="com.jetbrains.edu.kotlin.hints.KtFilesDiffer"/>
-    <functionDiffReducer language="kotlin" implementationClass="com.jetbrains.edu.kotlin.hints.KtFunctionDiffReducer"/>
-    <stringExtractor language="kotlin" implementationClass="com.jetbrains.edu.kotlin.hints.KtStringExtractor"/>
-    <inspectionProvider language="kotlin" implementationClass="com.jetbrains.edu.kotlin.hints.KtInspectionProvider"/>
 
     <!-- Hyperskill -->
     <configurator implementationClass="com.jetbrains.edu.kotlin.hyperskill.KtHyperskillConfigurator" language="kotlin" courseType="Hyperskill"/>