feat: migrate production schema from OMW to Kaikki flat vocabulary model

- Replace terms/translations/term_glosses/term_examples with vocabulary_entries
  and entry_translations
- Remove decks, topics and related tables (deferred)
- Add cefr_level and difficulty to entry_translations for game query filtering
- Update termModel.ts for new schema — getDistractors now takes sourceLanguage
- Update gameService.ts and multiplayerGameService.ts for entryId rename
- Update all test fixtures from termId to entryId
- Generate and apply migration 0011

apps/api/src/controllers/gameController.test.ts

@@ -64,9 +64,14 @@ const validBody = {
 };
 
 const fakeTerms = [
-  { termId: "t1", sourceText: "dog", targetText: "cane", sourceGloss: null },
-  { termId: "t2", sourceText: "cat", targetText: "gatto", sourceGloss: null },
-  { termId: "t3", sourceText: "house", targetText: "casa", sourceGloss: null },
+  { entryId: "t1", sourceText: "dog", targetText: "cane", sourceGloss: null },
+  { entryId: "t2", sourceText: "cat", targetText: "gatto", sourceGloss: null },
+  {
+    entryId: "t3",
+    sourceText: "house",
+    targetText: "casa",
+    sourceGloss: "a building for living in",
+  },
 ];
 
 beforeEach(() => {
@@ -197,7 +202,7 @@ describe("POST /api/v1/game/answer", () => {
     expect(body.success).toBe(false);
     expect(body.error).toContain("Question already answered");
   });
-  
+
   it("returns 400 when a field has an invalid value", async () => {
     const res = await request(app)
       .post("/api/v1/game/start")