feat(config): update default worktree subdirectory template (#38)

Change the default value of worktreeSubdirectoryTemplate from
'worktree$INDEX' to '$BASE_NAME$INDEX' to provide more meaningful
default names for worktree directories. This affects both the package.json
configuration and the TypeScript config handling.

Author: jackiotyu

package.json

@@ -948,7 +948,7 @@
           "git-worktree-manager.worktreeSubdirectoryTemplate": {
             "order": 12,
             "type": "string",
-            "default": "worktree$INDEX",
+            "default": "$BASE_NAME$INDEX",
             "pattern": "^[^/\\\\:*?\"<>|]+$",
             "patternErrorMessage": "%config.worktreeSubdirectoryTemplate.patternErrorMessage%",
             "description": "%config.worktreeSubdirectoryTemplate.description%"

src/core/config/setting.ts

@@ -67,7 +67,7 @@ export class Config {
 
     // Path template configuration
     static get(key: 'worktreePathTemplate', defaultValue: '$BASE_PATH.worktree'): string;
-    static get(key: 'worktreeSubdirectoryTemplate', defaultValue: 'worktree$INDEX'): string;
+    static get(key: 'worktreeSubdirectoryTemplate', defaultValue: '$BASE_NAME$INDEX'): string;
 
     // Post-creation command configuration
     static get(key: 'postCreateCmd', defaultValue: ''): string;

src/core/util/folder.ts

@@ -54,7 +54,7 @@ export const validateSubdirectoryTemplate = (template: string): boolean => {
 
 // get worktree subdirectory name with baseName and index
 export const getSubDir = (baseName: string, index: string | number) => {
-    const template = Config.get('worktreeSubdirectoryTemplate', 'worktree$INDEX');
+    const template = Config.get('worktreeSubdirectoryTemplate', '$BASE_NAME$INDEX');
 
     // Validate template
     if (!validateSubdirectoryTemplate(template)) {