Revert "hogar compartido: colaboracion entre cuentas sobre Firestore"

El hogar compartido cambia donde viven los datos, asi que se va a la 3.0 y la
2.x queda para correcciones. El trabajo sigue vivo en la rama 3.0.0 (163fd60).

Importante para esta rama: esto tambien retira el entitlement
com.apple.developer.applesignin, que sin la capability marcada en el App ID
habria roto la firma al subir la 2.1.1 a TestFlight.

This reverts commit 163fd60.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013su1ttRiMeMYxkZJ1Y3246

MealMood/MealMoodApp.swift

@@ -49,25 +49,17 @@ struct MealMoodApp: App {
             ShoppingItem.self
         ])
 
-        // 2.2: inside a household the data lives in Firestore (shared with the
-        // other members, reachable from Android) and the store stays local.
-        // Running CloudKit on top would mean two mirrors writing the same
-        // objects. See docs/household-sync.md.
-        HouseholdRuntime.isHouseholdStore = HouseholdRuntime.householdId != nil
-
         // 2.0: CloudKit private-database sync (multi-device, same Apple ID).
         // Falls back to the local-only store when CloudKit isn't available
         // (signed-out iCloud, missing entitlement in dev builds, etc.).
-        if !HouseholdRuntime.isHouseholdStore {
-            let cloudConfiguration = ModelConfiguration(cloudKitDatabase: .automatic)
-            do {
-                let container = try ModelContainer(for: schema, configurations: [cloudConfiguration])
-                CloudSyncRuntime.isCloudKitActive = true
-                return container
-            } catch {
-                CrashlyticsService.record(error, context: "cloudkit_container")
-                print("CloudKit container unavailable, using local store: \(error)")
-            }
+        let cloudConfiguration = ModelConfiguration(cloudKitDatabase: .automatic)
+        do {
+            let container = try ModelContainer(for: schema, configurations: [cloudConfiguration])
+            CloudSyncRuntime.isCloudKitActive = true
+            return container
+        } catch {
+            CrashlyticsService.record(error, context: "cloudkit_container")
+            print("CloudKit container unavailable, using local store: \(error)")
         }
 
         let configuration = ModelConfiguration(cloudKitDatabase: .none)