feat: add versioned research templates and alpha variants

backend/app/models.py

@@ -385,3 +385,54 @@ class TemplateInput(Base):
     field_ids: Mapped[list] = mapped_column(JSON)
     field_types: Mapped[dict] = mapped_column(JSON)
     created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=now)
+
+
+class CatalogResource(Base):
+    """Read-only upstream metadata snapshots; local annotations live separately."""
+    __tablename__ = "catalog_resources"
+    key: Mapped[str] = mapped_column(String(250), primary_key=True)
+    kind: Mapped[str] = mapped_column(String(30), index=True)
+    content: Mapped[dict] = mapped_column(JSON)
+    fetched_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=now)
+
+
+class OperatorNote(Base):
+    __tablename__ = "operator_notes"
+    name: Mapped[str] = mapped_column(String(200), primary_key=True)
+    note: Mapped[str] = mapped_column(Text, default="")
+    favorite: Mapped[bool] = mapped_column(Boolean, default=False)
+    version: Mapped[int] = mapped_column(Integer, default=1)
+
+
+class ResearchAsset(Base):
+    """Stable identity for typed templates, feature plans, views and workflow definitions."""
+    __tablename__ = "research_assets"
+    id: Mapped[str] = mapped_column(String(36), primary_key=True)
+    kind: Mapped[str] = mapped_column(String(30), index=True)
+    name: Mapped[str] = mapped_column(String(200))
+    version: Mapped[int] = mapped_column(Integer, default=1)
+    archived: Mapped[bool] = mapped_column(Boolean, default=False)
+    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=now)
+
+
+class ResearchRevision(Base):
+    __tablename__ = "research_revisions"
+    asset_id: Mapped[str] = mapped_column(ForeignKey("research_assets.id"), primary_key=True)
+    version: Mapped[int] = mapped_column(Integer, primary_key=True)
+    content: Mapped[dict] = mapped_column(JSON)
+    provenance: Mapped[dict] = mapped_column(JSON, default=dict)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=now)
+
+
+class ResearchExperiment(Base):
+    """Immutable generated candidates; never masquerade as platform Alpha records."""
+    __tablename__ = "research_experiments"
+    id: Mapped[str] = mapped_column(String(36), primary_key=True)
+    name: Mapped[str] = mapped_column(String(200))
+    kind: Mapped[str] = mapped_column(String(30), index=True)
+    hypothesis: Mapped[str] = mapped_column(Text)
+    inputs: Mapped[list] = mapped_column(JSON)
+    parents: Mapped[list] = mapped_column(JSON)
+    candidates: Mapped[list] = mapped_column(JSON)
+    evidence: Mapped[dict] = mapped_column(JSON)
+    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=now)