refactor: organise source files by ownership

Separate host-independent helpers under common/core and colocate feature
support code with its owners. Update imports, tests, and source-layout
guidance while preserving runtime behaviour.

src/modules/features/SetupWizard/connection/couchDBServerFixConfirmation.unit.spec.ts

@@ -0,0 +1,11 @@
+import { describe, expect, it } from "vitest";
+import { getCouchDBServerFixConfirmation } from "./couchDBServerFixConfirmation";
+
+describe("CouchDB server requirement fixes", () => {
+    it("identifies the exact server setting and value before a fix is applied", () => {
+        expect(getCouchDBServerFixConfirmation("chttpd/require_valid_user", "true")).toEqual({
+            title: "Change CouchDB server setting",
+            message: "Change CouchDB server setting 'chttpd/require_valid_user' to 'true'?",
+        });
+    });
+});