chore(flutter): 출시 준비 — 앱 이름·패키지 ID·아이콘·시작 화면·서명·서버 주소 확인

템플릿 기본값(tma_app · com.example)으로 남아 있던 앱 정체성과 출시 빌드 설정을 갖춘다.
- 앱 이름 rup, 패키지(번들) ID com.ttipo.rup (Android·iOS — 스토어에 올린 뒤에는 바꿀 수 없다). 웹 제목도 rup
- 앱 아이콘: 브랜드 주황 + 흰 워드마크 (원본 branding/, flutter_launcher_icons 로 크기별 생성 · Android 적응형 아이콘)
- 앱이 뜨는 동안의 화면을 첫 화면(스플래시)과 같은 노란색으로 — 흰 화면이 번쩍이지 않게 (Android 12+ 포함, iOS)
- Android 출시 서명: android/key.properties(커밋 안 함, 예시 key.properties.example). 없으면 경고와 함께 디버그 키
- 서버 주소는 --dart-define=API_URL 이 .env 보다 먼저. 출시 빌드가 http·개발용 주소를 가리키면 시작하지 않는다

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

flutter/pubspec.lock

@@ -17,6 +17,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "10.0.1"
+  archive:
+    dependency: transitive
+    description:
+      name: archive
+      sha256: "58c8d17d8d589c4259f773522815115de873c397b977a29993588487d3f9acb4"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.5.0"
   args:
     dependency: transitive
     description:
@@ -49,6 +57,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.4.1"
+  checked_yaml:
+    dependency: transitive
+    description:
+      name: checked_yaml
+      sha256: "959525d3162f249993882720d52b7e0c833978df229be20702b33d48d91de70f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.4"
   cli_config:
     dependency: transitive
     description:
@@ -57,6 +73,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.2.0"
+  cli_util:
+    dependency: transitive
+    description:
+      name: cli_util
+      sha256: ff6785f7e9e3c38ac98b2fb035701789de90154024a75b6cb926445e83197d1c
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.4.2"
   clock:
     dependency: transitive
     description:
@@ -222,6 +246,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "5.2.1"
+  flutter_launcher_icons:
+    dependency: "direct dev"
+    description:
+      name: flutter_launcher_icons
+      sha256: "10f13781741a2e3972126fae08393d3c4e01fa4cd7473326b94b72cf594195e7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.14.4"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -376,6 +408,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.1.2"
+  image:
+    dependency: transitive
+    description:
+      name: image
+      sha256: "89ed75b2f8231fe676808c5564f9590d728024ded7ac782a7ed8474f1c95b72a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.12.0"
   image_picker:
     dependency: "direct main"
     description:
@@ -464,6 +504,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.1"
+  json_annotation:
+    dependency: transitive
+    description:
+      name: json_annotation
+      sha256: "2a743920d81b7910627f68ee2c9ac1fc0bfee32b9fc3403587d7c6791ca12f80"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.12.0"
   leak_tracker:
     dependency: transitive
     description:
@@ -672,6 +720,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.5.2"
+  posix:
+    dependency: transitive
+    description:
+      name: posix
+      sha256: bc1bad54ad2b735816e31f8d4600cfde6c7839975085ddfbca48b6c9f7c4044e
+      url: "https://pub.dev"
+    source: hosted
+    version: "6.5.2"
   pub_semver:
     dependency: transitive
     description: