UX: implement visual product roadmap

backend/app/schemas.py

@@ -32,6 +32,14 @@ class VehicleOut(BaseModel):
     attention: bool = False
 
 
+class VehiclePageOut(BaseModel):
+    items: list[VehicleOut]
+    page: int
+    page_size: int
+    total: int
+    total_pages: int
+
+
 class BookingSummaryOut(BaseModel):
     public_ref: str
     customer_ref: str
@@ -122,6 +130,14 @@ class DataQualityIssueOut(BaseModel):
     resolved_at: datetime | None = None
 
 
+class DataQualityIssuePageOut(BaseModel):
+    items: list[DataQualityIssueOut]
+    page: int
+    page_size: int
+    total: int
+    total_pages: int
+
+
 class DataQualityIssueDetailOut(DataQualityIssueOut):
     entity_snapshot: dict[str, Any] | None = None
     related_snapshots: list[dict[str, Any]] = Field(default_factory=list)
@@ -440,3 +456,11 @@ class AuditEventOut(BaseModel):
     before: dict[str, Any] | None = None
     after: dict[str, Any] | None = None
     metadata: dict[str, Any] | None = None
+
+
+class AuditEventPageOut(BaseModel):
+    items: list[AuditEventOut]
+    page: int
+    page_size: int
+    total: int
+    total_pages: int