feat: Phase 2 — google_mobile_ads 7.x, flutter_lints 6, CHANGELOG v1.1.0

- google_mobile_ads 5.3→7.x (iOS Privacy Manifest 대응)
- flutter_lints 5→6 (최신 lint 규칙)
- CHANGELOG.md 전면 재작성 (v1.0.1, v1.1.0 릴리즈 이력)
- 버전 1.0.1+2 → 1.1.0+3
- freezed 3.x 마이그레이션 보류 (호환성 문제, 2.x 유지)

pubspec.lock

@@ -242,10 +242,10 @@ packages:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      sha256: "5398f14efa795ffb7a33e9b6a08798b26a180edac4ad7db3f231e40f82ce11e1"
+      sha256: "3105dc8492f6183fb076ccf1f351ac3d60564bff92e20bfc4af9cc1651f4e7e1"
       url: "https://pub.dev"
     source: hosted
-    version: "5.0.0"
+    version: "6.0.0"
   flutter_localizations:
     dependency: "direct main"
     description: flutter
@@ -345,10 +345,10 @@ packages:
     dependency: "direct main"
     description:
       name: google_mobile_ads
-      sha256: "0d4a3744b5e8ed1b8be6a1b452d309f811688855a497c6113fc4400f922db603"
+      sha256: f35e040875bb54e8a3455bcffed3b4ac9e9263fbf7751b9fd1ae7f30793faee8
       url: "https://pub.dev"
     source: hosted
-    version: "5.3.1"
+    version: "7.0.0"
   graphs:
     dependency: transitive
     description:
@@ -513,10 +513,10 @@ packages:
     dependency: transitive
     description:
       name: lints
-      sha256: c35bb79562d980e9a453fc715854e1ed39e24e7d0297a880ef54e17f9874a9d7
+      sha256: "12f842a479589fea194fe5c5a3095abc7be0c1f2ddfa9a0e76aed1dbd26a87df"
       url: "https://pub.dev"
     source: hosted
-    version: "5.1.1"
+    version: "6.1.0"
   logging:
     dependency: transitive
     description:
@@ -1004,4 +1004,4 @@ packages:
     version: "3.1.3"
 sdks:
   dart: ">=3.9.2 <4.0.0"
-  flutter: ">=3.35.0"
+  flutter: ">=3.35.1"