better graph explorer

re-enable locations in dumps

tools/raptor_graph_explorer/README.md

@@ -155,11 +155,11 @@ Motifs are not inferred from rendered geometry. For each operation graph the too
 
 ## Viewer and API
 
-Except for spatial4, the viewer initially fetches an aggregate operation graph unless the browser has a saved view choice. Sigma renders the graph with WebGL. Controls cover report/view/metric selection, text and tensor search, mapping filters, self edges, relayout, fitting, and motif selection. Raw nodes and edges have their own selection details and never call aggregate-only detail or mapping endpoints. Mapping panels remain available for operation aggregate edges.
+The viewer initially fetches an aggregate operation graph, so a previously selected raw view cannot make a new report exceed the display safety cap before the first render. Browser responses disable caching so HTML and JavaScript from different tool revisions cannot be mixed. Sigma renders the graph with WebGL. Controls cover report/view selection, text and tensor search, mapping filters, self edges, relayout, fitting, and motif selection. Edges use a fixed width. Raw nodes and edges have their own selection details and never call aggregate-only detail or mapping endpoints. Nodes without an SSA name fall back to their source identity. Mapping panels remain available for operation aggregate edges.
 
 Operation expansion is a deterministic projection of the source graph. Expand selected, Expand all operations, Collapse selected operation, and Collapse all rebuild the complete display from the current expanded-operation set. An expanded operation's raw nodes replace its aggregate node, including isolated raw nodes. An aggregate edge is retained only when both endpoint operations are collapsed; otherwise its raw edges replace it with endpoints calculated from the complete expansion set. Expansion order therefore cannot leave stale endpoints or simultaneous aggregate/raw representations.
 
-Operation ranks are calculated from the complete operation graph, including isolated operations. Collapsed nodes use stable operation anchors. Expanded nodes are sorted by lane and node ID; lane numbers form perpendicular rows, equal lanes align across adjacent operations, and lane-less nodes use distinct deterministic scalar rows. This same model is used by Rerun layout, so unrelated operations do not jump during expansion or collapse and disconnected nodes never pile up at `(0, 0)`.
+Operation ranks are calculated from the complete operation graph, including isolated operations, and every view flows top-to-bottom. A collapsed operation reserves one displayed row. Expanded nodes use compact rows for distinct lanes in numeric order, followed by deterministic lane-less rows, so sparse lane numbers create no empty geometric space. Raw nodes sharing a lane receive centered deterministic horizontal offsets. Operation and raw views use stable server coordinates, and `Reset layout` restores them; core and node-kind views use ELK, and `Rerun layout` runs it again. Operation labels use the first SSA name; Sigma's collision grid thins normal labels, and a label is skipped when its measured screen rectangle intersects another visible node. Selected or hovered nodes keep the original white bubble with black text. Selecting a motif frames its member nodes on the first click. Aggregate-node sizes remain bounded.
 
 Browser dependencies are pinned in one place, `static/index.html`:
 
@@ -192,8 +192,10 @@ Raw pages default to 100 and cannot exceed 500. Subgraph depth cannot exceed fiv
 ## Performance behavior
 
 - CSV readers stream rows and insert them in bounded batches.
-- Temporary SQLite staging and bulk joins resolve endpoints; ingestion performs no per-edge node query.
-- Secondary indexes are created after raw insertion.
+- Temporary SQLite staging tables are function-scoped and dropped immediately; bulk joins resolve endpoints without per-edge node queries.
+- CSVs without additional columns use a constant empty JSON representation.
+- Ingestion closes its write connection before derived indexes, aggregation, motifs, and diagnostics reopen the database.
+- Secondary indexes are created after raw insertion and focus on serving and aggregation queries.
 - Raw edges are never retained as a Python object graph or loaded into NetworkX.
 - Only aggregate operation nodes/edges enter NetworkX.
 - Mapping statistics are grouped in SQL; exact stencil comparison streams one operation pair.