refactor(routing): address code review feedback - simplify list filter, fix docs example

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

app/api/routing_rules.py

@@ -170,18 +170,16 @@ def list_routing_rules(request: Request, db: DbSession) -> list[dict[str, Any]]:
     Rules are sorted by position.
     """
     user_id = _get_user_id(request)
-    admin = _is_admin(request)
 
-    query = db.query(PipelineRoutingRule)
-    if admin:
-        query = query.filter((PipelineRoutingRule.owner_id == user_id) | (PipelineRoutingRule.owner_id.is_(None)))
-    else:
-        query = query.filter((PipelineRoutingRule.owner_id == user_id) | (PipelineRoutingRule.owner_id.is_(None)))
-
-    rules = query.order_by(
-        PipelineRoutingRule.owner_id.is_(None).asc(),
-        PipelineRoutingRule.position.asc(),
-    ).all()
+    rules = (
+        db.query(PipelineRoutingRule)
+        .filter((PipelineRoutingRule.owner_id == user_id) | (PipelineRoutingRule.owner_id.is_(None)))
+        .order_by(
+            PipelineRoutingRule.owner_id.is_(None).asc(),
+            PipelineRoutingRule.position.asc(),
+        )
+        .all()
+    )
 
     return [_serialize_rule(r) for r in rules]
 

docs/UserGuide.md

@@ -662,13 +662,18 @@ based on their properties — no manual pipeline selection required.
 | `regex` | Full Python regex match (case-insensitive) |
 | `gt` / `lt` / `gte` / `lte` | Numeric comparison (greater/less than) |
 
-**Example:** Route all invoices over 1 MB to a dedicated pipeline:
+**Example:** Route invoices to one pipeline and large files to another:
 
 ```
 Rule 1: field=document_type, operator=equals, value=Invoice, target_pipeline=3
 Rule 2: field=size,          operator=gt,     value=1048576, target_pipeline=5
 ```
 
+With first-match-wins logic, an invoice of any size matches Rule 1 and is
+routed to pipeline 3.  A non-invoice file larger than 1 MB matches Rule 2
+and is routed to pipeline 5.  Everything else falls back to the default
+pipeline.
+
 You can test your rules without actually routing a document using the
 **evaluate** endpoint (`POST /api/routing-rules/evaluate`).  For the full
 API reference, see [API Documentation](API.md#routing-rules).