feat: preserve gear components through catch imports

apps/api/app/models.py

@@ -165,6 +165,34 @@ class CatchReport(Base):
     spot: Mapped[Spot | None] = relationship()
     waterbody: Mapped[Waterbody] = relationship()
     bait: Mapped[Bait | None] = relationship()
+    tackle_components: Mapped[list["CatchTackleComponent"]] = relationship(back_populates="catch_report")
+
+
+class CatchTackleComponent(Base):
+    """Ordered gear evidence; unresolved raw values are valid and preserved."""
+
+    __tablename__ = "catch_tackle_component"
+    __table_args__ = (
+        UniqueConstraint("catch_report_id", "position"),
+        CheckConstraint(
+            "NOT (tackle_item_id IS NOT NULL AND rig_id IS NOT NULL)",
+            name="ck_catch_tackle_one_canonical_target",
+        ),
+    )
+    id: Mapped[uuid.UUID] = mapped_column(primary_key=True, default=uuid.uuid4)
+    catch_report_id: Mapped[uuid.UUID] = mapped_column(ForeignKey("catch_report.id"))
+    tackle_item_id: Mapped[uuid.UUID | None] = mapped_column(ForeignKey("tackle_item.id"))
+    rig_id: Mapped[uuid.UUID | None] = mapped_column(ForeignKey("rig.id"))
+    role: Mapped[str] = mapped_column(String(50))
+    position: Mapped[int] = mapped_column(Integer)
+    raw_value: Mapped[str] = mapped_column(String(200))
+    source_system: Mapped[str | None] = mapped_column(String(50))
+    source_external_id: Mapped[str | None] = mapped_column(String(200))
+    source_url: Mapped[str | None] = mapped_column(Text)
+    raw_payload: Mapped[dict | None] = mapped_column(JSON)
+    catch_report: Mapped[CatchReport] = relationship(back_populates="tackle_components")
+    tackle_item: Mapped[TackleItem | None] = relationship()
+    rig: Mapped[Rig | None] = relationship()
 
 
 class OfficialRecordImport(Base):