feat: 完成 Agent MCP 对接

- 增加 MCP 连接类型、环境检测接口和容器运行环境支持

- 将 Agent 编排改为绑定整体 MCP 并编译为 runtime McpSpec

- 优化 MCP 工具展示、审批、草稿试运行和画布回显稳定性

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/ai/mcp/McpTransportTypeTest.java

@@ -0,0 +1,58 @@
+package tech.easyflow.ai.mcp;
+
+import org.junit.Assert;
+import org.junit.Test;
+import tech.easyflow.ai.service.impl.McpServiceImpl;
+import tech.easyflow.common.web.exceptions.BusinessException;
+
+/**
+ * {@link McpTransportType} 单元测试。
+ */
+public class McpTransportTypeTest {
+
+    /**
+     * 应兼容解析 MCP 配置中常见的连接方式文本。
+     */
+    @Test
+    public void fromShouldParseSupportedTransportTypes() {
+        Assert.assertEquals(McpTransportType.STDIO, McpTransportType.from("stdio"));
+        Assert.assertEquals(McpTransportType.SSE, McpTransportType.from("sse"));
+        Assert.assertEquals(McpTransportType.SSE, McpTransportType.from("http-sse"));
+        Assert.assertEquals(McpTransportType.HTTP, McpTransportType.from("http"));
+        Assert.assertEquals(McpTransportType.HTTP, McpTransportType.from("http-stream"));
+        Assert.assertEquals(McpTransportType.HTTP, McpTransportType.from("streamable-http"));
+        Assert.assertEquals(McpTransportType.STDIO, McpTransportType.from(null));
+        Assert.assertEquals(McpTransportType.STDIO, McpTransportType.from(" "));
+    }
+
+    /**
+     * 应从 MCP 配置 JSON 中推断首个 server 的连接方式。
+     */
+    @Test
+    public void getFirstMcpTransportTypeShouldInferFromConfigJson() {
+        Assert.assertEquals("stdio", McpServiceImpl.getFirstMcpTransportType("""
+                {"mcpServers":{"everything":{"command":"npx","args":["-y","@modelcontextprotocol/server-everything"]}}}
+                """));
+        Assert.assertEquals("http-sse", McpServiceImpl.getFirstMcpTransportType("""
+                {"mcpServers":{"remote":{"transport":"http-sse","url":"http://127.0.0.1:3000/sse"}}}
+                """));
+        Assert.assertEquals("http-stream", McpServiceImpl.getFirstMcpTransportType("""
+                {"mcpServers":{"remote":{"transport":"http-stream","url":"http://127.0.0.1:3000/mcp"}}}
+                """));
+    }
+
+    /**
+     * 不支持的连接方式应直接失败，避免保存无法启动的 MCP 配置。
+     */
+    @Test
+    public void getFirstMcpTransportTypeShouldRejectUnsupportedTransportType() {
+        try {
+            McpServiceImpl.getFirstMcpTransportType("""
+                    {"mcpServers":{"remote":{"transport":"websocket","url":"ws://127.0.0.1:3000/mcp"}}}
+                    """);
+            Assert.fail("expected BusinessException");
+        } catch (BusinessException exception) {
+            Assert.assertTrue(exception.getMessage().contains("不支持的 MCP 连接方式"));
+        }
+    }
+}

easyflow-modules/easyflow-module-ai/src/test/java/tech/easyflow/core/runtime/ChatAssistantAccumulatorTest.java

@@ -70,4 +70,25 @@ public class ChatAssistantAccumulatorTest {
         Assert.assertEquals(1, secondToolCalls.size());
         Assert.assertEquals("call-2", secondToolCalls.get(0).get("id"));
     }
+
+    /**
+     * 工具展示名应进入展示链和 assistant toolCalls，但不覆盖真实工具名。
+     */
+    @Test
+    @SuppressWarnings("unchecked")
+    public void shouldKeepToolDisplayNameWithoutOverridingToolName() {
+        ChatAssistantAccumulator accumulator = new ChatAssistantAccumulator();
+        accumulator.appendToolCall("call-1", "mcp_123_search", "知识库 MCP - search", "{\"q\":\"java\"}");
+        accumulator.appendToolResult("call-1", "mcp_123_search", "知识库 MCP - search", "{\"ok\":true}");
+
+        Map<String, Object> payload = accumulator.buildPayload(null);
+        List<Map<String, Object>> chains = (List<Map<String, Object>>) payload.get("chains");
+        List<Map<String, Object>> messageChain = (List<Map<String, Object>>) payload.get("messageChain");
+        List<Map<String, Object>> toolCalls = (List<Map<String, Object>>) messageChain.get(0).get("toolCalls");
+
+        Assert.assertEquals("mcp_123_search", chains.get(0).get("name"));
+        Assert.assertEquals("知识库 MCP - search", chains.get(0).get("toolDisplayName"));
+        Assert.assertEquals("mcp_123_search", toolCalls.get(0).get("name"));
+        Assert.assertEquals("知识库 MCP - search", toolCalls.get(0).get("toolDisplayName"));
+    }
 }