fix: 改进终端兼容性 - FFM原生终端支持、dumb终端提示、双重Goodbye修复

- 添加jline-terminal-ffm依赖（JDK22+ FFM API原生终端）
- JVM参数增加--enable-native-access=ALL-UNNAMED
- dumb终端模式下显示黄色警告和建议
- 终端尺寸为0时不显示尺寸信息
- ExitCommand不再输出Goodbye（避免与ReplSession重复）
- TerminalBuilder增加streams(System.in, System.out)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

pom.xml

@@ -63,6 +63,13 @@
             <version>${jline.version}</version>
         </dependency>
 
+        <!-- JLine FFM 终端提供者（JDK 22+，Windows/Linux/Mac 原生终端支持） -->
+        <dependency>
+            <groupId>org.jline</groupId>
+            <artifactId>jline-terminal-ffm</artifactId>
+            <version>${jline.version}</version>
+        </dependency>
+
         <!-- Picocli: CLI 命令解析 -->
         <dependency>
             <groupId>info.picocli</groupId>
@@ -90,7 +97,7 @@
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
                 <configuration>
-                    <jvmArguments>-Xmx512m -Xms256m</jvmArguments>
+                    <jvmArguments>-Xmx512m -Xms256m --enable-native-access=ALL-UNNAMED</jvmArguments>
                 </configuration>
             </plugin>
             <plugin>

src/main/java/com/claudecode/command/impl/ExitCommand.java

@@ -30,6 +30,6 @@ public class ExitCommand implements SlashCommand {
         if (context.exitCallback() != null) {
             context.exitCallback().run();
         }
-        return "Goodbye!";
+        return "";
     }
 }

src/main/java/com/claudecode/repl/ReplSession.java

@@ -97,8 +97,15 @@ public class ReplSession {
 
         try (Terminal terminal = TerminalBuilder.builder()
                 .system(true)
+                .streams(System.in, System.out)
                 .build()) {
 
+            // 检测是否为 dumb 终端并提示
+            boolean isDumb = "dumb".equals(terminal.getType());
+            if (isDumb) {
+                log.info("当前为 dumb 终端模式，建议使用 Windows Terminal / PowerShell / cmd 获得完整体验");
+            }
+
             LineReader reader = LineReaderBuilder.builder()
                     .terminal(terminal)
                     .parser(new DefaultParser())
@@ -156,9 +163,22 @@ public class ReplSession {
         BannerPrinter.printCompact(out);
         out.println(AnsiStyle.dim("  Working directory: " + System.getProperty("user.dir")));
         out.println(AnsiStyle.dim("  Tools: " + toolRegistry.size() + " registered"));
-        out.println(AnsiStyle.dim("  Terminal: " + terminal.getType()
-                + " (" + terminal.getWidth() + "×" + terminal.getHeight() + ")"));
-        out.println(AnsiStyle.dim("  Tip: Tab to complete commands, ↑↓ to browse history, Ctrl+D to exit"));
+
+        boolean isDumb = "dumb".equals(terminal.getType());
+        int w = terminal.getWidth();
+        int h = terminal.getHeight();
+        String termInfo = terminal.getType();
+        if (w > 0 && h > 0) {
+            termInfo += " (" + w + "×" + h + ")";
+        }
+        out.println(AnsiStyle.dim("  Terminal: " + termInfo));
+
+        if (isDumb) {
+            out.println(AnsiStyle.yellow("  ⚠ Dumb 终端模式：Tab补全和行编辑可能受限"));
+            out.println(AnsiStyle.yellow("    建议在 Windows Terminal / PowerShell / cmd.exe 中运行"));
+        } else {
+            out.println(AnsiStyle.dim("  Tip: Tab to complete commands, ↑↓ to browse history, Ctrl+D to exit"));
+        }
         out.println();
     }