Add -d, --data flag to offckb clean for selective data removal (#330)

* Initial plan

* Add -d, --data option to clean command for data-only cleanup

Co-authored-by: RetricSu <23436060+RetricSu@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: RetricSu <23436060+RetricSu@users.noreply.github.com>

Author: Copilot

src/cli.ts

@@ -105,7 +105,11 @@ program
     return printSystemScripts({ style: exportStyle, network });
   });
 
-program.command('clean').description('Clean the devnet data, need to stop running the chain first').action(clean);
+program
+  .command('clean')
+  .description('Clean the devnet data, need to stop running the chain first')
+  .option('-d, --data', 'Only remove chain data, keep devnet config files')
+  .action((options: { data?: boolean }) => clean(options));
 program.command('accounts').description('Print account list info').action(accounts);
 
 program

src/cmd/clean.ts

@@ -3,19 +3,42 @@ import { isFolderExists } from '../util/fs';
 import { readSettings } from '../cfg/setting';
 import { logger } from '../util/logger';
 
-export function clean() {
+export interface CleanOptions {
+  data?: boolean;
+}
+
+export function clean(options?: CleanOptions) {
   const settings = readSettings();
   const allDevnetDataPath = settings.devnet.configPath;
-  // this is the root folder of devnet, it contains config, data, debugFullTransactions, transactions, failed-transactions, contracts
-  if (isFolderExists(allDevnetDataPath)) {
-    try {
-      fs.rmSync(allDevnetDataPath, { recursive: true });
-      logger.info(`Chain data cleaned.`);
-    } catch (error: unknown) {
-      logger.info(`Did you stop running the chain first?`);
-      logger.error((error as Error).message);
+  const dataOnly = options?.data || false;
+
+  if (dataOnly) {
+    // Only clean the chain data subdirectory
+    const chainDataPath = settings.devnet.dataPath;
+    if (isFolderExists(chainDataPath)) {
+      try {
+        fs.rmSync(chainDataPath, { recursive: true });
+        logger.info(`Chain data cleaned. Devnet config files preserved.`);
+      } catch (error: unknown) {
+        logger.info(`Did you stop running the chain first?`);
+        logger.error((error as Error).message);
+      }
+    } else {
+      logger.info(`Nothing to clean. Chain data directory ${chainDataPath} not found.`);
     }
   } else {
-    logger.info(`Nothing to clean. Devnet data directory ${allDevnetDataPath} not found.`);
+    // Clean everything - the original behavior
+    // this is the root folder of devnet, it contains config, data, debugFullTransactions, transactions, failed-transactions, contracts
+    if (isFolderExists(allDevnetDataPath)) {
+      try {
+        fs.rmSync(allDevnetDataPath, { recursive: true });
+        logger.info(`Chain data cleaned.`);
+      } catch (error: unknown) {
+        logger.info(`Did you stop running the chain first?`);
+        logger.error((error as Error).message);
+      }
+    } else {
+      logger.info(`Nothing to clean. Devnet data directory ${allDevnetDataPath} not found.`);
+    }
   }
 }