refactor(sdcard): convert SDcard implementation from Java to Kotlin

[batoripX]

• Migrate SDcard file handling and SAF utilities to idiomatic Kotlin
• Convert MyFileObserver to Kotlin secondary constructors
• Use Kotlin bitwise operations and property access syntax

[greptile-apps]

Greptile Summary

The PR attempts to replace the SD-card Cordova implementation with Kotlin, but the new file contains only a small manager/helper subset and is not wired into the native plugin contract.

• Deletes the complete Java CordovaPlugin, including its action dispatcher, SAF operations, activity-result handling, and workspace-index integration.
• Adds Kotlin file-information, URI, write-permission, and file-observer helpers.
• Leaves the plugin registration and source declaration pointing to the deleted Java implementation.

Confidence Score: 4/5

The PR is not safe to merge because the registered native SD-card service is deleted without a buildable Cordova-compatible replacement.

Every external-storage and workspace-index bridge call still targets com.foxdebug.sdcard.SDcard, while the replacement is an unregistered SDCardManager that does not extend CordovaPlugin or implement action dispatch.

Files Needing Attention: src/plugins/sdcard/src/android/SDcard.kt and src/plugins/sdcard/src/android/SDcard.java

Important Files Changed

Filename	Overview
src/plugins/sdcard/src/android/SDcard.java	Deletes the complete registered Cordova plugin and its filesystem, SAF, observer, picker, and workspace action implementations without an equivalent replacement.
src/plugins/sdcard/src/android/SDcard.kt	Adds an unregistered plain manager under a different package with only a small subset of the former functionality and no Cordova action dispatcher.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
    JS[sdcard JavaScript API] -->|cordova.exec service SDcard| Registration[plugin.xml: com.foxdebug.sdcard.SDcard]
    Registration --> Missing[Deleted SDcard CordovaPlugin]
    Kotlin[com.foxbyte.acode.SDCardManager] -. not registered and has no execute dispatcher .-> Registration
    Missing --> Failure[Build failure or all native SDcard actions unavailable]

Loading

_{Reviews (1): Last reviewed commit: "refactor(sdcard): convert SDcard impleme..." | Re-trigger Greptile}

[greptile-apps]

Cordova plugin entry point removed

When JavaScript invokes any SDcard action, Cordova still resolves com.foxdebug.sdcard.SDcard, but this change deletes that plugin and replaces it with an unregistered SDCardManager that neither extends CordovaPlugin nor implements execute. The plugin manifest also still references the deleted Java source, causing the Android build to fail during plugin installation or, if installation proceeds, leaving all external-storage, SAF picker, file-watching, and workspace-index operations unavailable.

Knowledge Base Used:

• File System
• Plugin System