✨ feat(redis): 优化数据库别名与计数展示

- Redis DB 标题不再重复拼接 key 数量
- 将别名单独渲染为浅色文本并支持设置后即时刷新

Fixes #593

frontend/src/utils/redisDbAlias.test.ts

@@ -68,13 +68,12 @@ describe('redisDbAlias helpers', () => {
   });
 
   it('builds the sidebar label with and without an alias', () => {
-    expect(buildRedisDbNodeLabel(0, 'cache')).toBe('db0 (cache)');
+    expect(buildRedisDbNodeLabel(0, 'cache')).toBe('db0 cache');
     expect(buildRedisDbNodeLabel(3, '')).toBe('db3');
     expect(buildRedisDbNodeLabel(0, '   ')).toBe('db0');
   });
 
-  it('appends the key-count suffix after the alias', () => {
-    expect(buildRedisDbNodeLabel(0, 'cache', ' (12)')).toBe('db0 (cache) (12)');
-    expect(buildRedisDbNodeLabel(0, '', ' (12)')).toBe('db0 (12)');
+  it('does not append key counts to the sidebar label', () => {
+    expect(buildRedisDbNodeLabel(0, '12')).toBe('db0 12');
   });
 });

frontend/src/utils/redisDbAlias.ts

@@ -5,7 +5,7 @@
  * user works with several connections that each use those indices for a
  * different purpose, the numbers are indistinguishable in the sidebar. An alias
  * map lets the user label, for example, `db0` as `cache` and have the sidebar
- * render `db0 (cache)`.
+ * render `db0 cache`.
  *
  * The map is purely a client-side display preference and is keyed by
  * connection id so aliases stay independent across connections. The underlying
@@ -128,17 +128,14 @@ export const setRedisDbAlias = (
 
 /**
  * Build the sidebar label for a Redis DB node. Returns `dbN` when there is no
- * alias, and `dbN (alias)` when one is set. `suffix` carries the existing
- * key-count fragment (e.g. ` (12)`) and is always appended last so the alias
- * stays adjacent to the index.
+ * alias, and `dbN alias` when one is set. Key counts are intentionally not
+ * included here: V2 renders them via the node meta slot to avoid duplicates.
  */
 export const buildRedisDbNodeLabel = (
   dbIndex: number,
   alias: string,
-  suffix = '',
 ): string => {
   const base = `db${dbIndex}`;
   const sanitizedAlias = sanitizeRedisDbAlias(alias);
-  const labelled = sanitizedAlias ? `${base} (${sanitizedAlias})` : base;
-  return `${labelled}${suffix}`;
+  return sanitizedAlias ? `${base} ${sanitizedAlias}` : base;
 };