Add relationship-aware graph flow

SLICE_HISTORY.md

@@ -1,5 +1,40 @@
 # Completed slices
 
+## DFG-17 relationship-aware graph and upstream flow
+
+### Changed
+
+- Released DocForge 0.10.0 with the fixed `graph-browser@8` template.
+- Assigned generic semantic families, distinct colors, line patterns, and directional endpoint
+  symbols to common structure, execution, data, dependency, evidence, and context relations.
+- Added a static visible-relationship key shared by Nodes and Flow, including deterministic
+  fallback styling for project-defined relations.
+- Renamed topology-derived navigation from ambiguous Children and Edge language to Focus node,
+  Outgoing paths, and Incoming & lateral.
+- Implemented bounded upstream Flow layers. Calls, dispatches, launches, activations, and writes
+  keep declared direction; reads, imports, and dependencies reverse for lineage presentation;
+  structure, evidence, context, and unknown relations remain excluded.
+- Separated relationship-line and context-node CSS classes to prevent style inheritance and DOM
+  selector collisions.
+
+### Verification
+
+- A deterministic JavaScript harness covers relation classification, fallback styling, semantic
+  direction, evidence exclusion, upstream membership, dependency reversal, and layered placement.
+- Browser interaction QA verifies distinct line colors, dash patterns, endpoint markers, exact
+  relationship keys, Nodes-to-Flow switching, evidence exclusion, and the destination-on-right
+  layout without console or page errors.
+- HTML, CSS, and JavaScript validation, strict Pyright, Ruff, formatting, compilation, dependency
+  locks, npm audit, the complete warning-strict suite, and diff checks pass.
+
+### Limits
+
+- Flow operates on the already bounded neighborhood returned for the current focus and depth.
+- Unknown project-defined relations receive deterministic Nodes styling but do not enter Flow until
+  their semantic direction is declared in the fixed relation map.
+- Cycles are bounded by visited-node traversal. A later gate may add explicit cycle-group rendering
+  if real project graphs demonstrate that need.
+
 ## DFG-16 browser asset quality gate
 
 ### Changed