feat: add snapshot build script for HarmonyOS Flutter SDK - #17
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The OpenHarmony Flutter SDK rebuilds the Dart VM with its own patches, so snapshots built against upstream Dart fail to load (wrong full snapshot version). flutter_snapshot_dump_ohos.sh builds JIT + AOT frontend server snapshots with the ohos SDK's own dart binary, on top of dart_flutter.patch plus the OpenHarmony engine dart patch, aligning the pkg/vm ffi abi list (ohosX64) with the engine platform dill. Verified with flutter 3.22.1-ohos-1.0.4 (Dart 3.4.0): injection call sites present in app.dill and autotrack events reported on device. Released as tag 3.22.1-ohos. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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概述
为 HarmonyOS 特制版 Flutter SDK（openharmony-sig/flutter_flutter）提供无埋点 AOP snapshot 的构建能力。特制版的 Dart VM 由 引擎 dart 补丁 重新构建，上游构建的 snapshot 加载时报
Wrong full snapshot version，故需专用构建流程与专用 tag。变更内容
flutter_snapshot_dump_ohos.sh：可复用的 ohos snapshot 构建脚本，用于制作 3.xx.x-ohos 版本，流程为：dart_flutter.patch（AOP 转换器）attachment/repos/dart.<dart_version>.patch（ohos 支持）pkg/vm的 FFI ABI 列表（gitee 补丁缺少ohosX64，与引擎 platform dill 不一致会报Type IntPtr has no mapping for ABI，脚本自动补齐）frontend_server_aot.dart.snapshot，必须替换）与新版本制作流程验证
dump_kernel确认 app.dill 中 29 处钩子调用点（GestureRecognizer/PageRoute/SchedulerBinding 等）3.22.1-ohos（release/3.22.1-ohos分支，含 darwin_arm64 AOT + JIT 产物）🤖 Generated with Claude Code