Fix GraalVM native image build failure

Fix native image compilation by initializing logback/slf4j classes at build time.
This is required because App.java and other classes use static final logger fields
that call LoggerFactory.getLogger() at class initialization.

Also remove OpenAI-related reflection config entries since OpenAI dependency
was removed in previous commit.

Fixes the native build error:
"Classes that should be initialized at run time got initialized during image building"

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: pditommaso

app/build.gradle

@@ -105,6 +105,8 @@ graalvmNative {
             buildArgs.add('-R:MaxHeapSize=100M')
             buildArgs.add('-R:MinHeapSize=10M')
             buildArgs.add('-R:MaxNewSize=25M')
+            // Initialize logback classes at build time since they're used by static logger fields
+            buildArgs.add('--initialize-at-build-time=ch.qos.logback,org.slf4j')
         }
     }
     toolchainDetection = true

app/conf/reflect-config.json

@@ -126,71 +126,6 @@
   "name":"com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl",
   "methods":[{"name":"<init>","parameterTypes":[] }]
 },
-{
-  "name":"dev.ai4j.openai4j.chat.AssistantMessage",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.ChatCompletionChoice",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.ChatCompletionRequest",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.ChatCompletionResponse",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.Delta",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.Function",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.FunctionCall",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.Parameters",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.ResponseFormat",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.Tool",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.ToolCall",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.chat.ToolChoice",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
-{
-  "name":"dev.ai4j.openai4j.shared.Usage",
-  "allDeclaredFields":true,
-  "methods":[{"name":"<init>","parameterTypes":[] }]
-},
 {
   "name":"groovy.lang.Closure"
 },