fix(cli): 验证 --resume 参数中的会话ID有效性

- 在启动 TUI 之前校验传入的 resumeSessionId 是否在本地会话索引中存在
- 读取用户主目录下的 sessions-index.json 文件进行会话ID验证
- 未找到匹配会话时输出错误信息并退出进程
- 在 App 组件中移除对会话ID重复验证的注释补充说明
- 确保 resumeSessionId 已经校验通过后才调用 handleSelectSession

Author: hqwlkj

packages/cli/src/cli.tsx

@@ -1,6 +1,9 @@
 import React from "react";
 import { render } from "ink";
-import { setShellIfWindows } from "@vegamo/deepcode-core";
+import { readFileSync, existsSync } from "node:fs";
+import { join } from "node:path";
+import { homedir } from "node:os";
+import { setShellIfWindows, getProjectCode } from "@vegamo/deepcode-core";
 import { checkForNpmUpdate, promptForPendingUpdate, type PackageInfo } from "./common/update-check";
 import { AppContainer } from "./ui";
 import { extractInitialPrompt, extractResumeSessionId } from "./cli-args";
@@ -65,6 +68,23 @@ const resumeSessionId = extractResumeSessionId(args);
 const projectRoot = process.cwd();
 configureWindowsShell();
 
+// Validate --resume <sessionId> before entering TUI
+if (typeof resumeSessionId === "string") {
+  const projectCode = getProjectCode(projectRoot);
+  const indexPath = join(homedir(), ".deepcode", "projects", projectCode, "sessions-index.json");
+  try {
+    const index = JSON.parse(readFileSync(indexPath, "utf-8"));
+    const found = Array.isArray(index?.entries) && index.entries.some((e: { id: string }) => e.id === resumeSessionId);
+    if (!found) {
+      process.stderr.write(`No saved session found with ID "${resumeSessionId}".\n`);
+      process.exit(1);
+    }
+  } catch {
+    process.stderr.write(`No saved session found with ID "${resumeSessionId}".\n`);
+    process.exit(1);
+  }
+}
+
 if (!process.stdin.isTTY) {
   process.stderr.write("deepcode requires an interactive terminal (TTY). " + "Re-run from a real terminal session.\n");
   process.exit(1);

packages/cli/src/ui/views/App.tsx

@@ -519,6 +519,7 @@ function App({ projectRoot, initialPrompt, resumeSessionId, onRestart }: AppProp
       refreshSessionsList();
       navigateToSubView("session-list");
     } else {
+      // Session ID already validated in cli.tsx — guaranteed to exist
       handleSelectSession(resumeSessionId);
     }
   }, [handleSelectSession, navigateToSubView, refreshSessionsList, resumeSessionId]);