Add optional route description field

server/server.py

@@ -158,6 +158,7 @@ class PlanBody(BaseModel):
     name:           str
     waypoints:      list[dict]
     profile:        str
+    description:    str | None = None
     geojson:        dict | None = None
     gpxTrack:       dict | None = None  # full GeoJSON of reference track, if any GPX segments used
     gpxColorIdx:    int | None = None
@@ -201,6 +202,8 @@ async def create_plan(body: PlanBody, user: User = Depends(require_auth)) -> JSO
         "created_at": now,
         "updated_at": now,
     }
+    if body.description:
+        data["description"] = body.description
     if body.collection_id:
         data["collection_id"] = body.collection_id
     if body.dist_km is not None:
@@ -241,6 +244,11 @@ async def update_plan(
         "profile":    body.profile,
         "updated_at": int(time.time()),
     })
+    # description: non-null sets, null clears
+    if body.description:
+        data["description"] = body.description
+    else:
+        data.pop("description", None)
     # collection_id: non-null assigns, null unassigns
     if body.collection_id:
         data["collection_id"] = body.collection_id
@@ -363,6 +371,8 @@ async def create_shared(body: PlanBody, user: User = Depends(require_auth)) -> J
         "created_at": now,
         "updated_at": now,
     }
+    if body.description:
+        data["description"] = body.description
     if body.dist_km is not None:
         data["dist_km"] = body.dist_km
     if body.elevation_gain is not None:
@@ -399,6 +409,10 @@ async def update_shared(
         "profile":    body.profile,
         "updated_at": int(time.time()),
     })
+    if body.description:
+        data["description"] = body.description
+    else:
+        data.pop("description", None)
     if body.dist_km is not None:
         data["dist_km"] = body.dist_km
     if body.elevation_gain is not None: