test: add storage coverage (firebase contract, factory), silence scenario log

- firebase.contract.test.js: run storage contract against createFirebaseStorage
  via SDK mock. Currently 12 fail (firebase diverges from contract: no norm(),
  injects id). Failures real — firebase copied from main, memory/ws invented
  new requirements. Contract under review vs main prod truth.
- storage.factory.test.js: getStorage() routing per REACT_APP_STORAGE env,
  singleton cache, getStorageMode() reporting.
- Combat.scenario.test.js: remove console.log (test noise).
- package.json: test:all now runs App + shared + server suites (was missing App).

src/tests/firebase.contract.test.js

@@ -0,0 +1,18 @@
+// Firebase adapter contract test.
+// Runs the SAME storage contract as memory + ws (src/storage/contract.js)
+// against createFirebaseStorage. The SDK is mocked via src/__mocks__/firebase/*,
+// so this proves the adapter translates contract calls -> SDK calls correctly
+// (path handling, merge semantics, subscribe) without hitting network.
+
+import { initFirebase, createFirebaseStorage } from '../storage/firebase';
+import { runStorageContract } from '../storage/contract';
+import { resetMockDb } from '../__mocks__/firebase/_mock-db';
+
+// Firebase mock DB is shared global state. Reset before each factory so
+// contract tests are isolated.
+runStorageContract('firebase', () => {
+  resetMockDb();
+  const ok = initFirebase();
+  if (!ok) throw new Error('initFirebase failed under mocked env');
+  return createFirebaseStorage();
+});