manager: install: add choose partition support

[YuKongA]

• close direct install and install to inactive slot fails #2865

[Copilot]

Pull Request Overview

This PR adds partition selection functionality for boot patching, allowing users to manually choose which partition (init_boot, boot, or vendor_boot) to flash. It also introduces new CLI commands for querying boot information such as slot suffixes, available partitions, and device paths.

Key changes:

• Added partition override parameter to boot patch CLI and backend logic
• Implemented new boot-info subcommands for querying device information
• Enhanced UI with dropdown for partition selection in install screen

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
userspace/ksud/src/cli.rs	Added partition parameter to patch command and new boot-info subcommands (is-ab-device, default-device, default-partition, available-partitions, slot-suffix); renamed SupportedKmi to SupportedKmis
userspace/ksud/src/boot_patch.rs	Added partition parameter throughout patch flow; implemented new public functions for boot device/partition selection and slot suffix handling; refactored logic into reusable functions
manager/app/src/main/java/me/weishu/kernelsu/ui/util/KsuCli.kt	Converted isAbDevice to suspend function using new CLI; added new suspend functions for partition/device queries; removed unused imports
manager/app/src/main/java/me/weishu/kernelsu/ui/screen/Install.kt	Added partition selection dropdown with animated visibility; replaced isInitBoot() with getDefaultPartitionName(); converted isAbDevice to suspend call
manager/app/src/main/java/me/weishu/kernelsu/ui/screen/Flash.kt	Added partition parameter to FlashBoot data class and installBoot call
manager/app/src/main/res/values/strings.xml	Added install_select_partition string resource
manager/app/src/main/res/values-zh-rCN/strings.xml	Added Chinese translation for install_select_partition; simplified install_inactive_slot_warning text
manager/app/src/main/java/me/weishu/kernelsu/ui/screen/Module.kt	Reordered import for DropdownImpl
manager/app/src/main/java/me/weishu/kernelsu/ui/MainActivity.kt	Removed unused import

Comments suppressed due to low confidence (1)

userspace/ksud/src/boot_patch.rs:689

• The slot suffix calculation logic is duplicated from the get_slot_suffix function (lines 777-787). Consider refactoring find_boot_image to call get_slot_suffix(ota) instead of duplicating this logic.

        let mut slot_suffix =
            utils::getprop("ro.boot.slot_suffix").unwrap_or_else(|| String::from(""));

        if !slot_suffix.is_empty() && ota {
            if slot_suffix == "_a" {
                slot_suffix = "_b".to_string()
            } else {
                slot_suffix = "_a".to_string()
            }
        };

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