test: refactored test suites to eliminate time-based sleeps and polling loops

- Replaced time-based sleeps and polling loops with event-driven promise resolvers and fake timers across agent and tool tests.
- Migrated test suites to share in-memory auth storage and fixtures using lifecycle hooks.
- Updated catalog model definitions, metadata, and configurations.

packages/coding-agent/test/tools/github-cache.test.ts

@@ -444,8 +444,11 @@ describe("getOrFetchView (TTL semantics)", () => {
 		expect(result.status).toBe("stale");
 		expect(result.rendered).toBe("old-diff");
 
-		await Promise.resolve();
-		await Bun.sleep(5);
+		for (let i = 0; i < 100; i++) {
+			const refreshed = getCached<{ refreshed: boolean }>(TEST_REPO, "pr-diff", 52, false);
+			if (refreshed?.payload.refreshed) break;
+			await Bun.sleep(0);
+		}
 
 		expect(fetchFresh).toHaveBeenCalledTimes(1);
 		const updated = getCached<{ refreshed: boolean }>(TEST_REPO, "pr-diff", 52, false);