feat(flutter): 반려동물 등록·수정 화면과 기기 저장소 구현

시안 screen-register · pet-species 를 옮겼다.
- 사진(앨범 선택 → 앱 폴더로 복사), 이름, 종·품종 검색 시트(12 대분류), 성별·중성화,
  생년월일 휠, 몸무게(kg/g), 건강 정보, 알레르기(직접 추가 항목은 다음 등록에도 유지), 메모
- 필수값이 빠지면 칸마다 오류를 표시하고 첫 빠진 칸으로 스크롤
- 수정 모드에서 삭제(확인창) 지원
- 저장은 PetRepository 계약 뒤의 LocalPetRepository(SharedPreferences JSON) —
  백엔드 /api/pets 가 생기면 Dio 구현으로 바꾼다
- image_picker · path_provider 추가, iOS 사진 접근 문구(NSPhotoLibraryUsageDescription)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

flutter/pubspec.lock

@@ -97,6 +97,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.15.0"
+  cross_file:
+    dependency: transitive
+    description:
+      name: cross_file
+      sha256: f141ea4f277af142a0356955707f6556f37b03947d39d55585981a06ca437bd6
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.3.5+5"
   crypto:
     dependency: transitive
     description:
@@ -153,6 +161,38 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.1"
+  file_selector_linux:
+    dependency: transitive
+    description:
+      name: file_selector_linux
+      sha256: da76400e7872ce7637ffdce12749ec24169c25f6195c28372208e65a24bcd2ab
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4+1"
+  file_selector_macos:
+    dependency: transitive
+    description:
+      name: file_selector_macos
+      sha256: d57c62362766b5e7ae739448650b66c6aab7a68ba7ecc65e04018652645ae0f4
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.5+1"
+  file_selector_platform_interface:
+    dependency: transitive
+    description:
+      name: file_selector_platform_interface
+      sha256: "35e0bd61ebcdb91a3505813b055b09b79dfdc7d0aee9c09a7ba59ae4bb13dc85"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.7.0"
+  file_selector_windows:
+    dependency: transitive
+    description:
+      name: file_selector_windows
+      sha256: fbefc5fb92c6d3cbe8d284a2cd971b593bb07d2cd6da8557b81a862250b4acec
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.3+6"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -174,6 +214,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "6.0.0"
+  flutter_plugin_android_lifecycle:
+    dependency: transitive
+    description:
+      name: flutter_plugin_android_lifecycle
+      sha256: "3854fe5e3bff0b113c658f260b90c95dea17c92db0f2addeac2e343dd9969785"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.35"
   flutter_riverpod:
     dependency: "direct main"
     description:
@@ -304,6 +352,70 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.1.2"
+  image_picker:
+    dependency: "direct main"
+    description:
+      name: image_picker
+      sha256: d8402284df184bc05f4a2210c6c23983b0720f4cd87cbd05c5390a78af602667
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.3"
+  image_picker_android:
+    dependency: transitive
+    description:
+      name: image_picker_android
+      sha256: d5b3e1774af29c9ab00103afb0d4614070f924d2e0057ac867ec98800114793f
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.13+17"
+  image_picker_for_web:
+    dependency: transitive
+    description:
+      name: image_picker_for_web
+      sha256: "66257a3191ab360d23a55c8241c91a6e329d31e94efa7be9cf7a212e65850214"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.1.1"
+  image_picker_ios:
+    dependency: transitive
+    description:
+      name: image_picker_ios
+      sha256: "852a7762962f3bb3ad54ef1d342669e41557f466033a676baa8876b367cf4050"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.13+8"
+  image_picker_linux:
+    dependency: transitive
+    description:
+      name: image_picker_linux
+      sha256: "1f81c5f2046b9ab724f85523e4af65be1d47b038160a8c8deed909762c308ed4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
+  image_picker_macos:
+    dependency: transitive
+    description:
+      name: image_picker_macos
+      sha256: "86f0f15a309de7e1a552c12df9ce5b59fe927e71385329355aec4776c6a8ec91"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2+1"
+  image_picker_platform_interface:
+    dependency: transitive
+    description:
+      name: image_picker_platform_interface
+      sha256: "567e056716333a1647c64bb6bd873cff7622233a5c3f694be28a583d4715690c"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.11.1"
+  image_picker_windows:
+    dependency: transitive
+    description:
+      name: image_picker_windows
+      sha256: d248c86554a72b5495a31c56f060cf73a41c7ff541689327b1a7dbccc33adfae
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.2"
   io:
     dependency: transitive
     description:
@@ -449,13 +561,13 @@ packages:
     source: hosted
     version: "1.1.0"
   path_provider:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: path_provider
-      sha256: "50c5dd5b6e1aaf6fb3a78b33f6aa3afca52bf903a8a5298f53101fdaee55bbcd"
+      sha256: a7f4874f987173da295a61c181b8ee71dab59b332a486b391babf26a1b884825
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.5"
+    version: "2.1.6"
   path_provider_android:
     dependency: transitive
     description:
@@ -847,4 +959,4 @@ packages:
     version: "3.1.3"
 sdks:
   dart: ">=3.11.1 <4.0.0"
-  flutter: ">=3.38.4"
+  flutter: ">=3.41.0"