feat: database models and Alembic migrations — User, Recording, Transcription, Protocol, PromptTemplate, ExportFile

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/models/protocol.py

@@ -0,0 +1,39 @@
+import enum
+import uuid
+from datetime import datetime
+
+from sqlalchemy import DateTime, Enum, ForeignKey, String, Text, func
+from sqlalchemy.dialects.postgresql import JSONB
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.models.base import Base, TimestampMixin, UUIDMixin
+
+
+class ProtocolStatus(str, enum.Enum):
+    generating = "generating"
+    done = "done"
+    error = "error"
+
+
+class Protocol(UUIDMixin, TimestampMixin, Base):
+    __tablename__ = "protocols"
+
+    transcription_id: Mapped[uuid.UUID] = mapped_column(
+        ForeignKey("transcriptions.id", ondelete="CASCADE")
+    )
+    template_id: Mapped[uuid.UUID] = mapped_column(
+        ForeignKey("prompt_templates.id")
+    )
+    content: Mapped[dict] = mapped_column(JSONB, default=dict)
+    raw_text: Mapped[str] = mapped_column(Text, default="")
+    llm_model: Mapped[str] = mapped_column(String(100))
+    status: Mapped[ProtocolStatus] = mapped_column(
+        Enum(ProtocolStatus), default=ProtocolStatus.generating
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
+    )
+
+    transcription: Mapped["Transcription"] = relationship(back_populates="protocols")
+    template: Mapped["PromptTemplate"] = relationship(back_populates="protocols")
+    export_files: Mapped[list["ExportFile"]] = relationship(back_populates="protocol")