feat(FN-3403): add shell multi-profile support with connection manager onbo

Merges shell multi-profile support for desktop (FN-3403) — spanning new connection-manager flows, shell onboarding interoperability, mobile connection profiles, desktop IPC/shell-settings plumbing, and tokenized titlebar styles — with a secondary migration of the WhatsApp plugin to the Baileys pairi

Fusion-Task-Id: FN-3403

packages/mobile/src/plugins/__tests__/connection-profiles.test.ts

@@ -0,0 +1,51 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const store = new Map<string, string>();
+
+vi.mock("@capacitor/preferences", () => ({
+  Preferences: {
+    get: vi.fn(async ({ key }: { key: string }) => ({ value: store.get(key) ?? null })),
+    set: vi.fn(async ({ key, value }: { key: string; value: string }) => {
+      store.set(key, value);
+    }),
+  },
+}));
+
+describe("connection-profiles", () => {
+  beforeEach(() => {
+    store.clear();
+    vi.resetModules();
+  });
+
+  it("recovers from invalid payloads", async () => {
+    store.set("fusion.shell.connections.v1", "{bad-json");
+    const { loadShellProfiles } = await import("../connection-profiles.js");
+    await expect(loadShellProfiles()).resolves.toEqual({ activeProfileId: null, profiles: [] });
+  });
+
+  it("normalizes empty and duplicate names", async () => {
+    const { saveShellProfile, listShellProfiles } = await import("../connection-profiles.js");
+    const first = await saveShellProfile({ name: "", serverUrl: "https://fusion.example.com" });
+    const second = await saveShellProfile({ name: "Remote Server", serverUrl: "https://fusion-two.example.com" });
+
+    expect(first.name).toBe("Remote Server");
+    expect(second.name).toBe("Remote Server (2)");
+    const profiles = await listShellProfiles();
+    expect(profiles).toHaveLength(2);
+  });
+
+  it("deleting active profile picks a fallback and deleting final profile clears state", async () => {
+    const { saveShellProfile, setActiveShellProfile, deleteShellProfile, loadShellProfiles } = await import("../connection-profiles.js");
+    const first = await saveShellProfile({ name: "Prod", serverUrl: "https://fusion.example.com" });
+    const second = await saveShellProfile({ name: "Staging", serverUrl: "https://staging.example.com" });
+    await setActiveShellProfile(second.id);
+
+    await deleteShellProfile(second.id);
+    const afterFirstDelete = await loadShellProfiles();
+    expect(afterFirstDelete.activeProfileId).toBe(first.id);
+
+    await deleteShellProfile(first.id);
+    const afterSecondDelete = await loadShellProfiles();
+    expect(afterSecondDelete).toEqual({ activeProfileId: null, profiles: [] });
+  });
+});