feat(FN-3328): refactor droid-cli into compatibility shim backed by fusion-

Merged FN-3328: Refactored the droid integration by converting `droid-cli` into a lightweight compatibility shim that delegates to `fusion-plugin-droid-runtime`, reducing droid-cli by ~5,400 lines of code while moving the actual runtime logic into the plugin scaffold. Updated the plugin loader to al

Fusion-Task-Id: FN-3328

plugins/fusion-plugin-droid-runtime/src/__tests__/index.test.ts

@@ -13,6 +13,7 @@ describe("droid runtime plugin index", () => {
     const slots = plugin.uiSlots?.map((s) => s.slotId) ?? [];
     expect(slots).toEqual(expect.arrayContaining([
       "settings-provider-card",
+      "settings-integration-card",
       "onboarding-provider-card",
       "onboarding-setup-help",
       "post-onboarding-recommendation",
@@ -25,6 +26,7 @@ describe("droid runtime plugin index", () => {
       slotId: "settings-provider-card",
       label: "Droid CLI Provider",
       componentPath: "./components/settings-provider-card.js",
+      order: 10,
     });
   });