feat: changed the --key parameter to be optional for batch plugin create method

Signed-off-by: rozekmichal <michal.rozek@blockydevs.com>

Author: rozekmichal

docs/adr/ADR-010-batch-transaction-plugin.md

@@ -101,11 +101,12 @@ export class CreateBatchCommand implements Command {
       validArgs.keyManager ||
       api.config.getOption<KeyManagerName>('default_key_manager');
 
-    const resolved = await api.keyResolver.resolveSigningKey(
-      validArgs.key,
-      keyManager,
-      ['batch:signer'],
-    );
+    const resolved =
+      await api.keyResolver.resolveAccountCredentialsWithFallback(
+        validArgs.key,
+        keyManager,
+        ['batch:signer'],
+      );
 
     batchState.saveBatch(validArgs.name, {
       name: validArgs.name,
@@ -117,7 +118,7 @@ export class CreateBatchCommand implements Command {
 }
 ```
 
-CLI usage: `hiero batch create --name my-batch --key <key>`
+CLI usage: `hiero batch create --name my-batch` (--key optional, defaults to operator)
 
 ### Part 4: Execute Command
 
@@ -451,7 +452,7 @@ sequenceDiagram
     participant Network as Hedera Network
     participant DomainHook as TokenStateHook
 
-    User->>CLI: batch create --name my-batch --key <key>
+    User->>CLI: batch create --name my-batch
     CLI->>CreateBatchCmd: execute(args)
     CreateBatchCmd->>BatchState: saveBatch("my-batch", data)
     CreateBatchCmd-->>User: Batch 'my-batch' created

src/plugins/batch/commands/create/handler.ts

@@ -31,11 +31,12 @@ export class CreateBatchCommand implements Command {
       validArgs.keyManager ||
       api.config.getOption<KeyManagerName>('default_key_manager');
 
-    const resolved = await api.keyResolver.resolveSigningKey(
-      batchKey,
-      keyManager,
-      ['batch:signer'],
-    );
+    const resolved =
+      await api.keyResolver.resolveAccountCredentialsWithFallback(
+        batchKey,
+        keyManager,
+        ['batch:signer'],
+      );
 
     const batchData = {
       name,

src/plugins/batch/commands/create/input.ts

@@ -11,8 +11,8 @@ import {
  */
 export const CreateBatchInputSchema = z.object({
   name: AliasNameSchema.describe('Batch name'),
-  key: PrivateKeySchema.describe(
-    'Key to sign transactions in the batch. Can be {accountId}:{privateKey} pair, account private key in {ed25519|ecdsa}:private:{private-key} format, key reference or account alias',
+  key: PrivateKeySchema.optional().describe(
+    'Key to sign transactions in the batch. Defaults to operator when omitted. Can be {accountId}:{privateKey} pair, account private key in {ed25519|ecdsa}:private:{private-key} format, key reference or account alias',
   ),
   keyManager: KeyManagerTypeSchema.optional().describe(
     'Key manager type (defaults to config setting)',

src/plugins/batch/manifest.ts

@@ -68,9 +68,9 @@ export const batchPluginManifest: PluginManifest = {
           name: 'key',
           short: 'k',
           type: OptionType.STRING,
-          required: true,
+          required: false,
           description:
-            'Key to sign transactions. Can be {accountId}:{privateKey} pair, account private key in {ed25519|ecdsa}:private:{private-key} format, key reference or account alias',
+            'Key to sign transactions. Defaults to operator when omitted. Can be {accountId}:{privateKey} pair, account private key in {ed25519|ecdsa}:private:{private-key} format, key reference or account alias',
         },
         {
           name: 'key-manager',