Initial commit: Nat20 Notes — TTRPG session transcription & summarization

backend/app/errors.py

@@ -0,0 +1,29 @@
+class PipelineError(Exception):
+    """Base class for pipeline failures. `stage` and `message` are shown to the
+    user directly; the original exception (if any) is kept for logs only."""
+
+    def __init__(self, stage: str, message: str, cause: Exception | None = None):
+        self.stage = stage
+        self.message = message
+        self.cause = cause
+        super().__init__(f"[{stage}] {message}")
+
+
+class AudioExtractionError(PipelineError):
+    def __init__(self, message: str, cause: Exception | None = None):
+        super().__init__("audio_extraction", message, cause)
+
+
+class TranscriptionError(PipelineError):
+    def __init__(self, message: str, cause: Exception | None = None):
+        super().__init__("transcription", message, cause)
+
+
+class DiarizationError(PipelineError):
+    def __init__(self, message: str, cause: Exception | None = None):
+        super().__init__("diarization", message, cause)
+
+
+class SummarizationError(PipelineError):
+    def __init__(self, message: str, cause: Exception | None = None):
+        super().__init__("summarization", message, cause)