feat: close v1 feature gaps — freemium gating, video/audio infrastructure, EAS build config

- Add access control service with 3 free workouts (IDs 1, 11, 43), paywall gating on workout detail and lock indicators on explore grid
- Wire VideoPlayer into player background and workout detail preview
- Add placeholder HLS video URLs to 5 sample workouts (Apple test streams)
- Add test audio URLs to music service MOCK_TRACKS for all vibes
- Switch RevenueCat API key to env-based with sandbox fallback
- Create eas.json with development/preview/production build profiles
- Update app.json with iOS privacy descriptions (HealthKit, Camera) and non-exempt encryption flag
- Create collection detail screen (route crash fix)
- Replace hardcoded profile stats with real activity store data
- Add unlockWithPremium i18n key in EN/FR/DE/ES

eas.json

@@ -0,0 +1,36 @@
+{
+  "cli": {
+    "version": ">= 16.0.1",
+    "appVersionSource": "remote"
+  },
+  "build": {
+    "development": {
+      "developmentClient": true,
+      "distribution": "internal",
+      "ios": {
+        "simulator": true
+      }
+    },
+    "preview": {
+      "distribution": "internal",
+      "ios": {
+        "resourceClass": "m-medium"
+      }
+    },
+    "production": {
+      "autoIncrement": true,
+      "ios": {
+        "resourceClass": "m-medium"
+      }
+    }
+  },
+  "submit": {
+    "production": {
+      "ios": {
+        "appleId": "millianlmx@icloud.com",
+        "ascAppId": "REPLACE_WITH_APP_STORE_CONNECT_APP_ID",
+        "appleTeamId": "REPLACE_WITH_APPLE_TEAM_ID"
+      }
+    }
+  }
+}