Defined the RecordingService and the TranscribingService protocols in the Recording package tracker.

README.md

@@ -41,6 +41,8 @@ Attendi/
         │       ├── RecordingView.swift
         │       ├── RecordingViewModel.swift
         │       ├── RecordingButtonStyle.swift
+        │       ├── RecordingService.swift
+        │       ├── TranscribingService.swift
         │       └── Images.xcassets  # Record, pause, and send icons
         └── Tests/
             ├── Recording/
@@ -81,6 +83,21 @@ text content transition.
      background, shrinks while pressed, and dims while disabled. The label and its padding scale with Dynamic Type 
      via `@ScaledMetric`, and an `invertStyle` flag controls whether the label's color scheme is inverted for contrast.
 
+### Services
+
+The actual recording work is abstracted behind two protocols, injected into `RecordingView` at initialization and 
+attached to its view model:
+
+- **`RecordingService`** — captures the audio from a microphone, with throwing async `start`, `pause`, `resume`, and 
+     `stop` methods; `stop` returns the captured audio.
+- **`TranscribingService`** — transcribes the captured audio into text through a throwing async `transcribe` method; 
+     the view model stores the result once processing finishes.
+
+The default `SimulatedRecordingService` and `SimulatedTranscribingService` fake the work (the latter with a two-second 
+delay and a dummy transcription); the unit tests inject fast mocks, and real backends can be plugged in the same way 
+without touching the feature's state machine. When either service fails, the view model falls back to the 
+not-recording state.
+
 ## Testing
 
 The view model is covered by Swift Testing suites in `RecordingViewModelTests.swift`, grouped with nested `@Suite`