Update README.md with project details, features, requirements, architecture, and data management for PLib video library manager.

src/PLib.Application/Abstractions/IMediaProbe.cs

@@ -0,0 +1,14 @@
+using PLib.Domain.Videos;
+
+namespace PLib.Application.Abstractions;
+
+/// <summary>Reads duration, resolution and codec out of a media container.</summary>
+public interface IMediaProbe
+{
+    /// <summary>
+    /// Probes <paramref name="fullPath"/>. Returns <see cref="VideoTechnicalInfo.Unknown"/>
+    /// when the file cannot be read or is not a media file — probing must never throw for
+    /// a single bad file, otherwise one corrupt video would abort a whole library scan.
+    /// </summary>
+    Task<VideoTechnicalInfo> ProbeAsync(string fullPath, CancellationToken cancellationToken = default);
+}