docs: Updating webserver.md documentation to align with 1.0.0 features (#906)

## Summary

* **What is the goal of this PR?** (e.g., Implements the new feature for
file uploading.)

Updating webserver.md documentation to align with 1.0.0 features

* **What changes are included?**

Added documentation for the following new features (including replacing
screenshots)

- file renaming
- file moving
- support for uploading any file type
- batch uploads

## Additional Context

* Add any other information that might be helpful for the reviewer
(e.g., performance implications, potential risks,
  specific areas to focus on).

Nothing comes to mind

---

### AI Usage

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? _**NO**_

docs/webserver.md

@@ -1,14 +1,14 @@
 # Web Server Guide
 
-This guide explains how to connect your CrossPoint Reader to WiFi and use the built-in web server to upload EPUB files from your computer or phone.
+This guide explains how to connect your CrossPoint Reader to WiFi and use the built-in web server to upload files from your computer or phone.
 
 ## Overview
 
 CrossPoint Reader includes a built-in web server that allows you to:
 
-- Upload EPUB files wirelessly from any device on the same WiFi network
+- Upload files wirelessly from any device on the same WiFi network
 - Browse and manage files on your device's SD card
-- Create folders to organize your ebooks
+- Create folders to organize your library
 - Delete files and folders
 
 ## Prerequisites
@@ -129,34 +129,31 @@ Click **File Manager** to access file management features.
 #### Browsing Files
 
 - The file manager displays all files and folders on your SD card
-- **Folders** are highlighted in yellow with a 📁 icon
-- **EPUB files** are highlighted in green with a 📗 icon
+- **Folders** are highlighted in yellow and indicated with a 📁 icon
+- **EPUB Files** are highlighted in green and indicated with a 📗 icon
+- **All Other Files** are not highlighted and indicated with a 📄 icon
 - Click on a folder name to navigate into it
 - Use the breadcrumb navigation at the top to go back to parent folders
 
 <img src="./images/wifi/webserver_files.png" width="600">
 
-#### Uploading EPUB Files
+#### Uploading Files
 
-1. Click the **+ Add** button in the top-right corner
-2. Select **Upload eBook** from the dropdown menu
-3. Click **Choose File** and select an `.epub` file from your device
-4. Click **Upload**
-5. A progress bar will show the upload status
-6. The page will automatically refresh when the upload is complete
-
-**Note:** Only `.epub` files are accepted. Other file types will be rejected.
+1. Click the **📤 Upload** button in the top-right corner
+2. Click **Choose File** and select a file from your device
+3. Click **Upload**
+4. A progress bar will show the upload status
+5. The page will automatically refresh when the upload is complete
 
 <img src="./images/wifi/webserver_upload.png" width="600">
 
 #### Creating Folders
 
-1. Click the **+ Add** button in the top-right corner
-2. Select **New Folder** from the dropdown menu
-3. Enter a folder name (must not contain characters \" * : < > ? / \\ | and must not be . or ..)
-4. Click **Create Folder**
+1. Click the **📁 New Folder** button in the top-right corner
+2. Enter a folder name (must not contain characters \" * : < > ? / \\ | and must not be . or ..)
+3. Click **Create Folder**
 
-This is useful for organizing your ebooks by genre, author, or series.
+This is useful for organizing your library by genre, author, series or file type.
 
 #### Deleting Files and Folders
 
@@ -168,11 +165,25 @@ This is useful for organizing your ebooks by genre, author, or series.
 
 **Note:** Folders must be empty before they can be deleted.
 
+#### Moving Files
+
+1. Click the **📂** (folder) icon next to any file
+2. Enter a folder name or select one from the dropdown
+3. Click **Move** to relocate the file
+
+**Note:** Typing in a nonexistent folder name will result in the following error: "Failed to move: Destination not found"
+
+#### Renaming Files
+
+1. Click the **✏️** (pencil) icon next to any file
+2. Enter a file name (must not contain characters \" * : < > ? / \\ | and must not be . or ..)
+3. Click **Rename** to permanently rename the file
+
 ---
 
 ## Command Line File Management
 
-For power users, you can manage files directly from your terminal using `curl` while the device is in File Upload mode a detailed documentation can be found [here](./webserver-endpoints.md). 
+For power users, you can manage files directly from your terminal using `curl` while the device is in File Upload mode. Detailed documentation can be found [here](./webserver-endpoints.md). 
 
 ## Security Notes
 
@@ -189,7 +200,6 @@ For power users, you can manage files directly from your terminal using `curl` w
 - **Supported WiFi:** 2.4GHz networks (802.11 b/g/n)
 - **Web Server Port:** 80 (HTTP)
 - **Maximum Upload Size:** Limited by available SD card space
-- **Supported File Format:** `.epub` only
 - **Browser Compatibility:** All modern browsers (Chrome, Firefox, Safari, Edge)
 
 ---
@@ -198,7 +208,7 @@ For power users, you can manage files directly from your terminal using `curl` w
 
 1. **Organize with folders** - Create folders before uploading to keep your library organized
 2. **Check signal strength** - Stronger signals (`|||` or `||||`) provide faster, more reliable uploads
-3. **Upload multiple files** - You can upload files one at a time; the page refreshes after each upload
+3. **Upload multiple files** - You can select and upload multiple files at once; the manager will queue them and refresh when the batch is finished
 4. **Use descriptive names** - Name your folders clearly (e.g., "SciFi", "Mystery", "Non-Fiction")
 5. **Keep credentials saved** - Save your WiFi password for quick reconnection in the future
 6. **Exit when done** - Press **Back** to exit the WiFi screen and save battery