Update: Admin Panel > Wireless file upload, LED control

[Jstudner]

This branch introduces a new admin.html interface designed for remote file and LED management on the ESP32-S3 media server system. (this + auto generated media.json means you don't need a PC to edit the content anymore)

---

Admin Panel Features

Accessible directly at http://192.168.4.1/admin.html, this panel is hidden from the standard user interface and must be manually visited in the browser. It currently includes the following functionality:

• File management for Movies, Shows, Books, and Music:
  • Upload, rename, delete, and view files in each category
  • Special handling for the Shows section: create and upload to named subdirectories for shows
• SD card monitoring:
  • Displays total and used space
• LED control:
  • The LED starts in the off state by default > previously RGB
  • Three options, Off, Solid Color, RGB Loop
  • Color picker for Solid Color mode

---

Known Issues

File uploads remain unstable and can cause SD card corruption under certain failure conditions. If SD initialization begins failing after an upload attempt, the card may require reformatting. This issue is under active investigation and will be addressed in a future update.

---

Security Considerations

The admin panel does not currently require authentication. While it is not linked in the main interface, it is accessible to anyone with knowledge of the URL. Authentication or access control will be added in a future update. If its an imediate concern to you, change the name of both the .html file and the serve function in the .ino This will make it show up on a different location 192.168.4.1/<yourname>.html for example.

---

Planned Features

• Stream management tools to view currently playing files and active sessions
• On-device LED display controls for managing output to the onboard screen

This branch is under active development and will continue to evolve. Feedback and testing are appreciated before merging into the main branch. My goal here is to add new unstableish features and eventually move them over to main after testing more.

[Jstudner]

I am still working on a fix for the file upload risks, but I also just fixed the WIFI and SD indicators on the LCD, so now you can see if there was an SD failure without needing serial connection. (only in the ino version I am about to upload)