fix(gemini): blank projectId is not validated and AppSettings2 serialization fails

Author: Blarc

src/main/kotlin/com/github/blarc/ai/commits/intellij/plugin/settings/AppSettings2.kt

@@ -5,10 +5,11 @@ import com.github.blarc.ai.commits.intellij.plugin.AICommitsUtils.getCredentialA
 import com.github.blarc.ai.commits.intellij.plugin.notifications.Notification
 import com.github.blarc.ai.commits.intellij.plugin.notifications.sendNotification
 import com.github.blarc.ai.commits.intellij.plugin.settings.clients.LLMClientConfiguration
-import com.github.blarc.ai.commits.intellij.plugin.settings.clients.qianfan.QianfanClientConfiguration
+import com.github.blarc.ai.commits.intellij.plugin.settings.clients.gemini.GeminiClientConfiguration
 import com.github.blarc.ai.commits.intellij.plugin.settings.clients.ollama.OllamaClientConfiguration
 import com.github.blarc.ai.commits.intellij.plugin.settings.clients.openAi.OpenAiClientConfiguration
 import com.github.blarc.ai.commits.intellij.plugin.settings.clients.openAi.OpenAiClientSharedState
+import com.github.blarc.ai.commits.intellij.plugin.settings.clients.qianfan.QianfanClientConfiguration
 import com.github.blarc.ai.commits.intellij.plugin.settings.prompts.DefaultPrompts
 import com.intellij.credentialStore.CredentialAttributes
 import com.intellij.ide.passwordSafe.PasswordSafe
@@ -51,7 +52,8 @@ class AppSettings2 : PersistentStateComponent<AppSettings2> {
         elementTypes = [
             OpenAiClientConfiguration::class,
             OllamaClientConfiguration::class,
-            QianfanClientConfiguration::class
+            QianfanClientConfiguration::class,
+            GeminiClientConfiguration::class
         ],
         style = XCollection.Style.v2
     )

src/main/kotlin/com/github/blarc/ai/commits/intellij/plugin/settings/clients/gemini/GeminiClientConfiguration.kt

@@ -14,7 +14,7 @@ class GeminiClientConfiguration : LLMClientConfiguration(
     "0.7"
 ) {
     @Attribute
-    var projectId: String = ""
+    var projectId: String = "project-id"
     @Attribute
     var location: String = "us-central1"