Fix graph node activation

SLICE_HISTORY.md

@@ -1,5 +1,34 @@
 # Completed slices
 
+## DFG-13 graph activation reliability
+
+### Changed
+
+- Released the fixed `graph-browser@4` template.
+- Delayed SVG pointer capture until movement crosses the four-pixel drag threshold so an ordinary
+  click remains targeted at the graph node and reaches the modal inspection handler.
+- Preserved pointer capture and click suppression for actual canvas drags.
+- Added an explicit hidden-state rule so rendered neighborhoods remove the empty-canvas instruction.
+- Kept the token-bound HTTP surface, graph data, and listener lifetime unchanged.
+- Released the compatible fix as DocForge 0.7.3.
+
+### Verification
+
+- Focused interaction-contract checks distinguish click setup from drag pointer capture and cover
+  empty-state hiding.
+- Embedded JavaScript syntax validation, Ruff, formatting, compilation, and the complete
+  warning-strict 49-test DocForge suite pass.
+
+### Limits
+
+- The listener remains owned by the MCP process and closes when that process exits.
+- Browser state remains client-local and is not persisted.
+
+### Next gate
+
+No further gate is planned. Measure graph-browser use before adding history, comparison, or editing
+surfaces.
+
 ## DFG-12 modal node inspection
 
 ### Changed