feat: add Redis member detail viewer

src/lib/redisValuePresentation.ts

@@ -0,0 +1,26 @@
+export type RedisMemberDetailFormat = "json" | "text";
+
+export interface RedisMemberDetail {
+  text: string;
+  format: RedisMemberDetailFormat;
+}
+
+export function formatRedisMemberDetail(value: unknown): RedisMemberDetail {
+  if (typeof value === "string") {
+    const trimmed = value.trim();
+    if (trimmed) {
+      try {
+        return { text: JSON.stringify(JSON.parse(trimmed), null, 2), format: "json" };
+      } catch {
+        /* fall through to plain text */
+      }
+    }
+    return { text: value, format: "text" };
+  }
+
+  try {
+    return { text: JSON.stringify(value, null, 2), format: "json" };
+  } catch {
+    return { text: String(value), format: "text" };
+  }
+}