feat: add authenticated live podcasts and simplify native video playback

Include podcast capture, ingestion and replay, dependency and installer updates, and native video positioning after navigation.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/Yavsc.Api.Client/PodcastApiClient.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Threading;
+using System.Threading.Tasks;
+using Yavsc.Abstract.Streaming;
+
+namespace Yavsc.Api.Client;
+
+public sealed class PodcastApiClient(IYavscApiClient api, Func<string> baseAddress)
+{
+    private const string Prefix = "podcasts";
+
+    public Task<List<PodcastResponse>> ListAsync(CancellationToken ct = default)
+        => api.CallAsync<List<PodcastResponse>>(HttpMethod.Get, Absolute(Prefix), ct: ct);
+
+    public Task<PodcastResponse> CreateAsync(string title, CancellationToken ct = default)
+        => api.CallAsync<PodcastResponse>(HttpMethod.Post, Absolute(Prefix), new CreatePodcastRequest { Title = title }, ct);
+
+    public Task<PodcastManifestResponse> GetAsync(Guid id, CancellationToken ct = default)
+        => api.CallAsync<PodcastManifestResponse>(HttpMethod.Get, Absolute($"{Prefix}/{id}"), ct: ct);
+
+    public Task<PodcastResponse> UploadAsync(Guid id, int sequence, double duration, byte[] bytes, CancellationToken ct = default)
+        => api.CallAsync<PodcastResponse>(HttpMethod.Put,
+            Absolute($"{Prefix}/{id}/segments/{sequence}?duration={duration.ToString("R", CultureInfo.InvariantCulture)}"),
+            () =>
+            {
+                var content = new ByteArrayContent(bytes);
+                content.Headers.ContentType = new MediaTypeHeaderValue("video/mp2t");
+                return content;
+            }, ct);
+
+    public Task<PodcastResponse> CompleteAsync(Guid id, CancellationToken ct = default)
+        => api.CallAsync<PodcastResponse>(HttpMethod.Post, Absolute($"{Prefix}/{id}/complete"), ct: ct);
+
+    public Task DeleteAsync(Guid id, CancellationToken ct = default)
+        => api.CallAsync(HttpMethod.Delete, Absolute($"{Prefix}/{id}"), ct: ct);
+
+    public Task<byte[]> DownloadSegmentAsync(Guid id, int sequence, CancellationToken ct = default)
+        => api.DownloadAsync(HttpMethod.Get, Absolute($"{Prefix}/{id}/segments/{sequence}.ts"), ct);
+
+    private string Absolute(string path)
+    {
+        var address = new Uri(baseAddress().TrimEnd('/') + "/", UriKind.Absolute);
+        if (!address.AbsolutePath.EndsWith("/" + Constants.APIPrefix + "/", StringComparison.Ordinal))
+            address = new Uri(address, Constants.APIPrefix + "/");
+        return new Uri(address, path).AbsoluteUri;
+    }
+}