[Bug / FR] ActivityNotFoundException during in-app module installation when stock PackageInstaller is disabled; request fallback or support for external installers

[Akiyama-25]

Steps to reproduce/复现步骤

1. Freeze or disable the OEM default package installer (e.g., com.miui.packageinstaller) and use a third-party package installer (e.g., InstallerX).
2. Open Vector Manager and navigate to the module Repository / Store.
3. Select any module (e.g., Telegram Auxiliary) and tap install.

Expected behaviour/预期行为

The installation prompt should start successfully. Alternatively, if the system PackageInstaller session confirmation fails or is unavailable, it should gracefully fall back to an external installer via standard Intent (ACTION_VIEW using FileProvider).

Actual behaviour/实际行为

Installation fails immediately after downloading. Vector triggers android.content.pm.action.CONFIRM_INSTALL explicitly targeting com.miui.packageinstaller. Because the package is disabled, the system cannot resolve the Activity and throws an ActivityNotFoundException.

Xposed Module List/Xposed 模块列表

Bilibili_Innocent_Lab
fcmfix
Global lcon Pack
GPS Setter
Hide My Applist
Hyper Helper
HyperCeiler
HyperEars
HyperlMERestore
Hyperlsland
HyperLight
InxLocker
MapAdKiller
Re:X
Scene
sing-box
SpoofMyDevice
TAuxiliary
VPN Hide
WeKit
哔哩会员画质4in1

Root implementation/Root 方案

KernelSU 32650-4

System Module List/系统模块列表

Magic Mount-rs
神仙自动救砖-v5
HyperOS-动态温控
HyperUnlocked
KernelSU Grant Toast
.Integrity Box
TEESimulator-RS
爱玩机工具箱（应用核心功能拓展)
Vector
NeoZygisk
MiPay4XiaomiEU
HyperOS完美图标补全
Hc-百分百防格机
VPN Hide (Zygisk)

Vector version/Vector 版本

3111

Android version/Android 版本

HyperOS 3.0.303 xiaomi.eu / Android 16

Version requirement/版本要求

• I am using the latest debug build from GitHub Actions./我正在使用 GitHub Actions 中最新的调试版本。

Logs/日志

23_09-13-09-54_093.zip

23_09-13-09-54_093.log

[Akiyama-25]

My knowledge and skills are limited, so Gemini Spark will analyze the log files and write this issue on my behalf.