fix(sensor): use published coordinates for custom SRIDs

Result validation bypassed the project-specific GIS transform and called ST_Transform on custom engineering SRIDs. Read project and map coordinates from gis.junctions so every project uses its configured publication transform.

app/infra/db/postgresql/sensor_placement.py

@@ -130,18 +130,17 @@ def get_sensor_placement_nodes(
                 ) AS incident_pipes
                 GROUP BY node_id
             )
-            SELECT j.node_id,
+            SELECT g.id AS node_id,
                    ipd.max_pipe_diameter,
-                   j.elevation,
-                   ST_X(g.geom) AS project_x,
-                   ST_Y(g.geom) AS project_y,
-                   ST_X(ST_Transform(g.geom, 3857)) AS map_x,
-                   ST_Y(ST_Transform(g.geom, 3857)) AS map_y
-            FROM network.junctions AS j
-            JOIN gis.node_geometries AS g ON g.node_id = j.node_id
-            LEFT JOIN incident_pipe_diameters AS ipd ON ipd.node_id = j.node_id
-            WHERE j.node_id = ANY(%s)
-            ORDER BY j.node_id
+                   g.elevation,
+                   g.x AS project_x,
+                   g.y AS project_y,
+                   ST_X(g.geom) AS map_x,
+                   ST_Y(g.geom) AS map_y
+            FROM gis.junctions AS g
+            LEFT JOIN incident_pipe_diameters AS ipd ON ipd.node_id = g.id
+            WHERE g.id = ANY(%s)
+            ORDER BY g.id
             """,
             (node_ids, node_ids, node_ids),
         )