diff --git a/src/main/java/org/jabref/gui/ai/components/aichat/AiChatComponent.java b/src/main/java/org/jabref/gui/ai/components/aichat/AiChatComponent.java
index 57cd0a0184d..e4df98c5abe 100644
--- a/src/main/java/org/jabref/gui/ai/components/aichat/AiChatComponent.java
+++ b/src/main/java/org/jabref/gui/ai/components/aichat/AiChatComponent.java
@@ -16,7 +16,6 @@
 import org.jabref.gui.ai.components.chatmessage.ChatMessageComponent;
 import org.jabref.logic.ai.chathistory.ChatMessage;
 import org.jabref.logic.l10n.Localization;
-import org.jabref.preferences.WorkspacePreferences;
 
 import com.airhacks.afterburner.views.ViewLoader;
 
diff --git a/src/main/java/org/jabref/gui/entryeditor/aichattab/AiChatTab.java b/src/main/java/org/jabref/gui/entryeditor/aichattab/AiChatTab.java
index 0bf4a862886..25786655cf9 100644
--- a/src/main/java/org/jabref/gui/entryeditor/aichattab/AiChatTab.java
+++ b/src/main/java/org/jabref/gui/entryeditor/aichattab/AiChatTab.java
@@ -6,19 +6,13 @@
 import javafx.scene.control.Tooltip;
 
 import org.jabref.gui.DialogService;
-import org.jabref.gui.ai.components.aichat.AiChatComponent;
 import org.jabref.gui.ai.components.errorstate.ErrorStateComponent;
 import org.jabref.gui.ai.components.privacynotice.PrivacyNoticeComponent;
 import org.jabref.gui.entryeditor.EntryEditorPreferences;
 import org.jabref.gui.entryeditor.EntryEditorTab;
-import org.jabref.gui.util.BackgroundTask;
 import org.jabref.gui.util.TaskExecutor;
 import org.jabref.gui.util.UiTaskExecutor;
 import org.jabref.logic.ai.AiService;
-import org.jabref.logic.ai.chat.AiChatLogic;
-import org.jabref.logic.ai.chathistory.BibDatabaseChatHistory;
-import org.jabref.logic.ai.chathistory.BibEntryChatHistory;
-import org.jabref.logic.ai.chathistory.ChatMessage;
 import org.jabref.logic.ai.embeddings.EmbeddingsGenerationTask;
 import org.jabref.logic.ai.embeddings.events.FileIngestedEvent;
 import org.jabref.logic.citationkeypattern.CitationKeyGenerator;
@@ -29,11 +23,8 @@
 import org.jabref.model.entry.LinkedFile;
 import org.jabref.preferences.FilePreferences;
 import org.jabref.preferences.PreferencesService;
-import org.jabref.preferences.WorkspacePreferences;
 
 import com.google.common.eventbus.Subscribe;
-import dev.langchain4j.store.embedding.filter.MetadataFilterBuilder;
-import org.slf4j.LoggerFactory;
 
 public class AiChatTab extends EntryEditorTab {
     private final DialogService dialogService;
diff --git a/src/main/java/org/jabref/gui/entryeditor/aichattab/AiChatTabWorking.java b/src/main/java/org/jabref/gui/entryeditor/aichattab/AiChatTabWorking.java
index 5892df95665..9c9d1c0f0ed 100644
--- a/src/main/java/org/jabref/gui/entryeditor/aichattab/AiChatTabWorking.java
+++ b/src/main/java/org/jabref/gui/entryeditor/aichattab/AiChatTabWorking.java
@@ -4,8 +4,6 @@
 import java.util.Optional;
 
 import javafx.scene.Node;
-import javafx.scene.control.Tab;
-import javafx.scene.layout.Pane;
 
 import org.jabref.gui.DialogService;
 import org.jabref.gui.ai.components.aichat.AiChatComponent;
@@ -19,7 +17,6 @@
 import org.jabref.logic.ai.embeddings.EmbeddingsGenerationTask;
 import org.jabref.model.database.BibDatabaseContext;
 import org.jabref.model.entry.BibEntry;
-import org.jabref.preferences.WorkspacePreferences;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
diff --git a/src/main/java/org/jabref/gui/frame/MainMenu.java b/src/main/java/org/jabref/gui/frame/MainMenu.java
index e0b029086a9..87f90af6dc6 100644
--- a/src/main/java/org/jabref/gui/frame/MainMenu.java
+++ b/src/main/java/org/jabref/gui/frame/MainMenu.java
@@ -297,7 +297,7 @@ private void createMenu() {
 
                 new SeparatorMenuItem(),
 
-                factory.createMenuItem(StandardActions.REBUILD_FULLTEXT_SEARCH_INDEX, new RebuildFulltextSearchIndexAction(stateManager, frame::getCurrentLibraryTab, dialogService, preferencesService.getFilePreferences(), preferencesService.getAiPreferences(), taskExecutor)),
+                factory.createMenuItem(StandardActions.REBUILD_FULLTEXT_SEARCH_INDEX, new RebuildFulltextSearchIndexAction(stateManager, frame::getCurrentLibraryTab, dialogService, preferencesService.getFilePreferences(), taskExecutor)),
                 factory.createMenuItem(StandardActions.REGENERATE_EMBEDDINGS_CACHE, new RegenerateEmbeddingsAction(stateManager, frame::getCurrentLibraryTab, dialogService, taskExecutor)),
 
                 new SeparatorMenuItem(),
diff --git a/src/main/java/org/jabref/gui/preferences/ai/AiTabViewModel.java b/src/main/java/org/jabref/gui/preferences/ai/AiTabViewModel.java
index 4c02de5ce7c..13fe90443a7 100644
--- a/src/main/java/org/jabref/gui/preferences/ai/AiTabViewModel.java
+++ b/src/main/java/org/jabref/gui/preferences/ai/AiTabViewModel.java
@@ -1,6 +1,5 @@
 package org.jabref.gui.preferences.ai;
 
-import java.util.Arrays;
 import java.util.List;
 
 import javafx.beans.property.BooleanProperty;
diff --git a/src/main/java/org/jabref/gui/search/RebuildFulltextSearchIndexAction.java b/src/main/java/org/jabref/gui/search/RebuildFulltextSearchIndexAction.java
index 80671fb1e93..3a686979b35 100644
--- a/src/main/java/org/jabref/gui/search/RebuildFulltextSearchIndexAction.java
+++ b/src/main/java/org/jabref/gui/search/RebuildFulltextSearchIndexAction.java
@@ -12,7 +12,6 @@
 import org.jabref.logic.pdf.search.PdfIndexer;
 import org.jabref.logic.pdf.search.PdfIndexerManager;
 import org.jabref.model.database.BibDatabaseContext;
-import org.jabref.preferences.AiPreferences;
 import org.jabref.preferences.FilePreferences;
 
 import org.slf4j.Logger;
@@ -28,7 +27,6 @@ public class RebuildFulltextSearchIndexAction extends SimpleCommand {
     private final GetCurrentLibraryTab currentLibraryTab;
     private final DialogService dialogService;
     private final FilePreferences filePreferences;
-    private final AiPreferences aiPreferences;
     private final TaskExecutor taskExecutor;
 
     private BibDatabaseContext databaseContext;
@@ -39,13 +37,11 @@ public RebuildFulltextSearchIndexAction(StateManager stateManager,
                                             GetCurrentLibraryTab currentLibraryTab,
                                             DialogService dialogService,
                                             FilePreferences filePreferences,
-                                            AiPreferences aiPreferences,
                                             TaskExecutor taskExecutor) {
         this.stateManager = stateManager;
         this.currentLibraryTab = currentLibraryTab;
         this.dialogService = dialogService;
         this.filePreferences = filePreferences;
-        this.aiPreferences = aiPreferences;
         this.taskExecutor = taskExecutor;
 
         this.executable.bind(needsDatabase(stateManager));
diff --git a/src/main/java/org/jabref/gui/shared/SharedDatabaseLoginDialogView.java b/src/main/java/org/jabref/gui/shared/SharedDatabaseLoginDialogView.java
index 05dd83bbd52..f00afb0640f 100644
--- a/src/main/java/org/jabref/gui/shared/SharedDatabaseLoginDialogView.java
+++ b/src/main/java/org/jabref/gui/shared/SharedDatabaseLoginDialogView.java
@@ -32,6 +32,10 @@
 import de.saxsys.mvvmfx.utils.validation.visualization.ControlsFxVisualizer;
 import jakarta.inject.Inject;
 
+/**
+ * This offers the user to connect to a remove SQL database.
+ * Moreover, it directly opens the shared database after successful connection.
+ */
 public class SharedDatabaseLoginDialogView extends BaseDialog<Void> {
     @FXML private ComboBox<DBMSType> databaseType;
     @FXML private TextField host;
diff --git a/src/main/java/org/jabref/logic/ai/chat/AiChatLanguageModel.java b/src/main/java/org/jabref/logic/ai/chat/AiChatLanguageModel.java
index f0726db5366..22f6e82288c 100644
--- a/src/main/java/org/jabref/logic/ai/chat/AiChatLanguageModel.java
+++ b/src/main/java/org/jabref/logic/ai/chat/AiChatLanguageModel.java
@@ -8,8 +8,8 @@
 import org.jabref.logic.ai.chathistory.BibDatabaseChatHistory;
 import org.jabref.preferences.AiPreferences;
 
-import dev.langchain4j.model.chat.ChatLanguageModel;
 import dev.langchain4j.memory.ChatMemory;
+import dev.langchain4j.model.chat.ChatLanguageModel;
 import dev.langchain4j.model.openai.OpenAiChatModel;
 import org.h2.mvstore.MVStore;
 
@@ -48,7 +48,7 @@ public Optional<ChatLanguageModel> getChatLanguageModel() {
     }
 
     /**
-     * Update the underlying {@link ChatLanguageModel] by current {@link AiPreferences} parameters.
+     * Update the underlying {@link ChatLanguageModel} by current {@link AiPreferences} parameters.
      * When the model is updated, the chat messages are not lost.
      * See {@link AiChatLogic}, where messages are stored in {@link ChatMemory},
      * and {@link BibDatabaseChatHistory}, where messages are stored in {@link MVStore}.
diff --git a/src/main/java/org/jabref/logic/ai/embeddings/MVStoreEmbeddingStore.java b/src/main/java/org/jabref/logic/ai/embeddings/MVStoreEmbeddingStore.java
index 3c982c92d7c..f37c5757faa 100644
--- a/src/main/java/org/jabref/logic/ai/embeddings/MVStoreEmbeddingStore.java
+++ b/src/main/java/org/jabref/logic/ai/embeddings/MVStoreEmbeddingStore.java
@@ -2,7 +2,6 @@
 
 import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Map;
diff --git a/src/main/java/org/jabref/preferences/JabRefPreferences.java b/src/main/java/org/jabref/preferences/JabRefPreferences.java
index 62dcaa97e9f..ddeced08c35 100644
--- a/src/main/java/org/jabref/preferences/JabRefPreferences.java
+++ b/src/main/java/org/jabref/preferences/JabRefPreferences.java
@@ -130,7 +130,6 @@
 import com.google.common.base.Splitter;
 import com.tobiasdiez.easybind.EasyBind;
 import jakarta.inject.Singleton;
-import org.jspecify.annotations.Nullable;
 import org.jvnet.hk2.annotations.Service;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;