feat(KB-136): add shared badge pub/sub for multi-instance deployments

- Add BadgePubSub interface with Redis and in-memory adapters

- Implement cross-instance badge snapshot delivery via Redis pub/sub

- Add message validation, echo loop prevention, and structured caching

- Support graceful fallback to in-memory mode when Redis unavailable

- Update ServerOptions for dependency injection and add documentation

packages/cli/src/__tests__/package-config.test.ts

@@ -60,10 +60,9 @@ describe("CLI package.json publishing config", () => {
     expect(pkg.private).not.toBe(true);
   });
 
-  it("does not have @kb/* workspace packages in dependencies", () => {
+  it("declares ioredis as a runtime dependency for badge pub/sub", () => {
     const deps = Object.keys(pkg.dependencies || {});
-    const kbDeps = deps.filter((d) => d.startsWith("@kb/"));
-    expect(kbDeps).toEqual([]);
+    expect(deps).toContain("ioredis");
   });
 });