feat: add discoverable rig catalog

apps/api/app/schemas.py

@@ -63,6 +63,24 @@ class PaginatedTackleItemOut(BaseModel):
     offset: int
 
 
+class RigSummaryOut(BaseModel):
+    id: UUID
+    name: str
+    source_system: str | None
+    source_external_id: str | None
+    source_url: str | None
+    source_checked_at: datetime | None
+    missing_fields: list[str] = Field(default_factory=list)
+    component_count: int
+
+
+class PaginatedRigOut(BaseModel):
+    items: list[RigSummaryOut]
+    total: int
+    limit: int
+    offset: int
+
+
 class RigComponentOut(BaseModel):
     id: UUID
     role: str