Enhance console application with media volume status and custom title support (#371)

This PR implements three user-requested enhancements to the SharpCaster
console application to improve the user experience and provide more
complete media information.

## Changes Made

### 1. Media Volume and Mute Status in Status Commands

Both the command-line `status` command and interactive mode "Get media
status" now display media stream volume information alongside the
existing device volume information.

**Command-line example:**
```bash
$ sharpcaster "Living Room TV" status

Device: Living Room TV
Volume: 75% (Muted: False)          # Device volume
Media State: Playing
Title: Big Buck Bunny
Current Time: 45.2s
Duration: 120.0s
Progress: 37.7%
Media Volume: 80% (Muted: False)    # NEW: Media stream volume
```

**Interactive mode enhancement:**
The status table in Media Controls → "Get media status" now includes:
- Media Volume: Shows the media stream volume level
- Media Muted: Shows whether the media stream is muted

### 2. Custom Title Input for Custom URLs

When casting custom URLs in interactive mode, users can now specify a
custom title instead of being limited to the hardcoded "Custom Media"
title.

**User flow:**
```
? Select media to cast: Custom URL
? Enter media URL: https://example.com/my-video.mp4
? Enter media title (or press Enter for default): My Awesome Video
✅ Media loaded and playing successfully!
```

The title prompt allows empty input and defaults to "Custom Media" for
backward compatibility.

### 3. Navigation Menu Verification

Verified that all cast-related menus already have proper "Back to main
menu" options:
- ✅ Media Controls menu
- ✅ Queue Management menu

## Technical Details

- **Null-safe implementation**: Uses proper null-conditional operators
(`?.`) to handle cases where media volume information might not be
available
- **Consistent formatting**: Media volume uses the same percentage
formatting (`:P0`) as device volume for consistency
- **Error handling**: Gracefully displays "Not available" when media
volume information is unavailable
- **UI consistency**: Interactive mode uses Spectre.Console styling
patterns matching the existing codebase

## User Impact

These enhancements provide users with:
1. **Complete media information**: Both device and media stream volume
levels are now visible
2. **Better customization**: Custom titles for personal media improve
organization and identification
3. **Improved user experience**: More informative status displays and
intuitive navigation

The changes maintain backward compatibility and follow existing code
patterns for error handling and UI consistency.

<!-- START COPILOT CODING AGENT TIPS -->
---

✨ Let Copilot coding agent [set things up for
you](https://github.com/Tapanila/SharpCaster/issues/new?title=✨+Set+up+Copilot+instructions&body=Configure%20instructions%20for%20this%20repository%20as%20documented%20in%20%5BBest%20practices%20for%20Copilot%20coding%20agent%20in%20your%20repository%5D%28https://gh.io/copilot-coding-agent-tips%29%2E%0A%0A%3COnboard%20this%20repo%3E&assignees=copilot)
— coding agent works faster and does higher quality work when set up for
your repo.


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* When casting a custom URL, you can now enter a custom media title;
pressing Enter uses the default “Custom Media.”
* Media status displays now include media-specific volume (as a
percentage) and mute state (Yes/No). If media volume data isn’t
available, a clear “Not available” message is shown.
* These updates appear in both the media controls view and console
status output for clearer, more informative playback feedback.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Tapanila <1529210+Tapanila@users.noreply.github.com>

Author: Copilot

SharpCaster.Console/Controllers/MediaController.cs

@@ -66,7 +66,11 @@ public async Task CastMediaAsync()
                         .PromptStyle("green")
                         .ValidationErrorMessage("[red]Please enter a valid URL[/]")
                         .Validate(url => Uri.TryCreate(url, UriKind.Absolute, out _)));
-                title = "Custom Media";
+                title = AnsiConsole.Prompt(
+                    new TextPrompt<string>("[yellow]Enter media title (or press Enter for default):[/]")
+                        .PromptStyle("green")
+                        .AllowEmpty()
+                        .DefaultValue("Custom Media"));
                 break;
             default:
                 throw new InvalidOperationException("Invalid URL choice");
@@ -411,6 +415,17 @@ await AnsiConsole.Status().StartAsync($"{(newMediaMuteState ? "Muting" : "Unmuti
                                 statusTable.AddRow("[cyan]Progress[/]", $"[white]{progress:F1}%[/]");
                             }
 
+                            // Display media volume and mute status
+                            if (status.Volume != null)
+                            {
+                                statusTable.AddRow("[cyan]Media Volume[/]", $"[white]{status.Volume.Level:P0}[/]");
+                                statusTable.AddRow("[cyan]Media Muted[/]", status.Volume.Muted == true ? "[red]Yes[/]" : "[green]No[/]");
+                            }
+                            else
+                            {
+                                statusTable.AddRow("[cyan]Media Volume[/]", "[dim]Not available[/]");
+                            }
+                            
                             AnsiConsole.Write(statusTable);
                         }
                         else

SharpCaster.Console/Services/CommandExecutor.cs

@@ -505,6 +505,16 @@ private async Task<int> ShowStatusAsync()
                     var progress = (mediaStatus.CurrentTime / mediaStatus.Media.Duration.Value) * 100;
                     System.Console.WriteLine($"Progress: {progress:F1}%");
                 }
+                
+                // Display media volume and mute status
+                if (mediaStatus.Volume != null)
+                {
+                    System.Console.WriteLine($"Media Volume: {mediaStatus.Volume.Level:P0} (Muted: {mediaStatus.Volume.Muted})");
+                }
+                else
+                {
+                    System.Console.WriteLine("Media Volume: Not available");
+                }
             }
             else
             {