fix(ci): use Linux Flutter SDK for ubuntu-latest jobs (act runs Linux containers)

.gitea/workflows/ci.yml

@@ -2,10 +2,9 @@
 # Triggers on push and pull_request
 # Stages: lint -> test -> build (Android + iOS) -> artifacts
 #
-# NOTE: All jobs run on 'ubuntu-latest' which Gitea's act runner maps to the
-# self-hosted macOS (ARM64) machine. We use direct SDK downloads because
-# subosito/flutter-action and actions/setup-java query GitHub APIs that are
-# unreachable from the self-hosted runner.
+# Runner mapping:
+# - ubuntu-latest → act runner in Linux Docker container (needs Linux SDKs)
+# - [self-hosted, macos] → native macOS ARM64 host (needs macOS SDKs)
 
 name: CI
 
@@ -31,10 +30,10 @@ jobs:
 
       - name: Setup Flutter
         run: |
-          # Direct Flutter SDK download (macOS/ARM64 — act runner on Mac)
-          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_3.44.8-stable.zip" \
-            -o flutter.zip
-          unzip -q flutter.zip
+          # Direct Flutter SDK download — Linux container (act runner)
+          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.44.8-stable.tar.xz" \
+            -o flutter.tar.xz
+          tar -xf flutter.tar.xz
           export PATH="$PWD/flutter/bin:$PATH"
           flutter --version
           echo "$PWD/flutter/bin" >> "$GITHUB_PATH" || echo "$PWD/flutter/bin" >> "$HOME/.env_path"
@@ -64,9 +63,10 @@ jobs:
 
       - name: Setup Flutter
         run: |
-          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_3.44.8-stable.zip" \
-            -o flutter.zip
-          unzip -q flutter.zip
+          # Direct Flutter SDK download — Linux container (act runner)
+          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.44.8-stable.tar.xz" \
+            -o flutter.tar.xz
+          tar -xf flutter.tar.xz
           export PATH="$PWD/flutter/bin:$PATH"
           flutter --version
           echo "$PWD/flutter/bin" >> "$GITHUB_PATH" || echo "$PWD/flutter/bin" >> "$HOME/.env_path"
@@ -92,8 +92,8 @@ jobs:
 
       - name: Setup Java 17
         run: |
-          # Direct Temurin JDK download (macOS ARM64)
-          curl -fsSL "https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.12%2B7/OpenJDK17U-jdk_aarch64_mac_hotspot_17.0.12_7.tar.gz" \
+          # Direct Temurin JDK download — Linux container
+          curl -fsSL "https://github.com/adoptium/temurin17-binaries/releases/download/jdk-17.0.12%2B7/OpenJDK17U-jdk_x64_linux_hotspot_17.0.12_7.tar.gz" \
             -o jdk.tar.gz
           mkdir -p "$HOME/jdk"
           tar -xzf jdk.tar.gz -C "$HOME/jdk" --strip-components=1
@@ -105,9 +105,10 @@ jobs:
 
       - name: Setup Flutter
         run: |
-          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_3.44.8-stable.zip" \
-            -o flutter.zip
-          unzip -q flutter.zip
+          # Direct Flutter SDK download — Linux container
+          curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/linux/flutter_linux_3.44.8-stable.tar.xz" \
+            -o flutter.tar.xz
+          tar -xf flutter.tar.xz
           export PATH="$PWD/flutter/bin:$PATH"
           flutter --version
           echo "$PWD/flutter/bin" >> "$GITHUB_PATH" || echo "$PWD/flutter/bin" >> "$HOME/.env_path"
@@ -116,7 +117,7 @@ jobs:
         run: |
           export ANDROID_HOME="${HOME}/android-sdk"
           mkdir -p "${ANDROID_HOME}/cmdline-tools"
-          curl -fsSL "https://dl.google.com/android/repository/commandlinetools-mac-11076708_latest.zip" -o cmdline-tools.zip
+          curl -fsSL "https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip" -o cmdline-tools.zip
           unzip -q cmdline-tools.zip -d "${ANDROID_HOME}/cmdline-tools"
           mv "${ANDROID_HOME}/cmdline-tools/cmdline-tools" "${ANDROID_HOME}/cmdline-tools/latest"
           export PATH="${ANDROID_HOME}/cmdline-tools/latest/bin:${PATH}"
@@ -174,6 +175,7 @@ jobs:
 
 
   # ── Stage 3 (parallel): iOS build ───────────────────────────────
+  # Runs natively on macOS ARM64 host (not in Docker)
   build-ios:
     name: Build iOS
     runs-on: [self-hosted, macos]
@@ -184,6 +186,7 @@ jobs:
 
       - name: Setup Flutter
         run: |
+          # Direct Flutter SDK download — macOS ARM64 host (native)
           curl -fsSL "https://storage.googleapis.com/flutter_infra_release/releases/stable/macos/flutter_macos_3.44.8-stable.zip" \
             -o flutter.zip
           unzip -q flutter.zip