Add RAIL-FAB-WP-0030 to adapt the coordination graph to flavor.

Hide residuals by default and draw indexed depends_on edges once
STATE-WP-0092 lands; keep citation waits as fallback.

Assistant: grok
Assistant-Session: 01a09dc1-b21e-77e1-919e-fcad2f82b267

workplans/RAIL-FAB-WP-0030-flavor-and-depends-on-graph.md

@@ -0,0 +1,84 @@
+---
+id: RAIL-FAB-WP-0030
+type: workplan
+title: "Coordination graph: flavor classes and real depends_on edges"
+domain: financials
+repo: railiance-fabric
+status: proposed
+owner: grok
+topic_slug: railiance
+flavor: extension
+depends_on:
+  - STATE-WP-0092
+  - RAIL-FAB-WP-0029
+created: "2026-09-14"
+updated: "2026-09-14"
+related:
+  - CUST-WP-0072
+  - COORDINATION-WP-0005
+origin: residual-policy
+origin_ref: the-custodian/history/20260914-open-workplan-chokepoints.md
+---
+
+# Coordination graph: flavor classes and real depends_on edges
+
+Workplan 3 of 3 for the flavor / `depends_on` change. Fabric remains a
+**perspective** on State Hub (`RAIL-FAB-WP-0029`). Do not author
+workplans here. Do not let the explorer become an editor.
+
+Until `STATE-WP-0092` lands, keep recovering `waits_on` from task prose.
+After it lands, prefer indexed `depends_on` edges and treat citation
+edges as diagnostic fallback.
+
+## Hide residuals in the default coordination view
+
+```task
+id: RAIL-FAB-WP-0030-T01
+status: wait
+priority: high
+depends_on: [STATE-WP-0092, RAIL-FAB-WP-0029]
+```
+
+`export --format coordination` and
+`/ui/graph-explorer?mode=coordination` omit `flavor: residual` workplans
+and their tasks by default. A control includes them (parity with hub
+`include_residuals`). Unspecified flavor stays visible. Do not infer
+residual from the word “residual” in titles.
+
+Done when a residual node is absent from the default graph and present
+when included, documented in `docs/coordination-graph.md`.
+
+## Draw depends_on as first-class edges
+
+```task
+id: RAIL-FAB-WP-0030-T02
+status: wait
+priority: high
+depends_on: [STATE-WP-0092, RAIL-FAB-WP-0029]
+```
+
+Once the hub returns workplan `depends_on`, emit those edges in the
+coordination export (distinct from `waits_on` citations and
+`belongs_to`). Style flavor as a node class
+(planning / implementation / refactoring / extension / residual).
+Chokepoint sizing should use in-degree of **relevant** nodes by default.
+
+Done when the explorer shows hub `depends_on` without requiring a
+workplan id to appear in a wait note, and the two edge types are
+legible as different.
+
+## Keep citation recovery as fallback
+
+```task
+id: RAIL-FAB-WP-0030-T03
+status: todo
+priority: low
+depends_on: [RAIL-FAB-WP-0029]
+```
+
+Retain `waits_on` citation parsing for files that have not yet been
+backfilled (`CUST-WP-0072`). Mark citation-only edges so they are not
+confused with indexed `depends_on`. No new authoring surface.
+
+Done when the docs state the precedence: indexed `depends_on` first,
+citations as fallback, never the reverse.