chore: close WHI KPI card workplan

Marks CUST-WP-0003 finished with implementation evidence after verifying the dashboard WHI card, docs, and reference navigation are already present and the hub tasks are done.

workplans/CUST-WP-0003-whi-kpi-card.md

@@ -4,12 +4,12 @@ type: workplan
 title: "State Hub v0.4 — Workstream Health Index (WHI) KPI Card"
 domain: custodian
 repo: state-hub
-status: active
+status: finished
 owner: custodian
 topic_slug: custodian
 state_hub_workstream_id: 9cc32158-2f5c-4ef6-9713-aacce4623d5e
 created: "2026-02-26"
-updated: "2026-05-17"
+updated: "2026-06-04"
 ---
 
 # State Hub v0.4 — Workstream Health Index (WHI) KPI Card
@@ -46,7 +46,7 @@ CPI penalty: `WHI = WHI * 0.5` if CPI=1.
 ```task
 id: CUST-WP-0003-T01
 state_hub_task_id: 243646e0-b77a-41e7-ac51-82c5828e63d2
-status: todo
+status: done
 priority: high
 ```
 
@@ -61,7 +61,7 @@ workplan design — open_workstreams is the confirmed data source.)
 ```task
 id: CUST-WP-0003-T02
 state_hub_task_id: 6dbef71f-d2d7-44ee-abb8-279dbaeec505
-status: todo
+status: done
 priority: high
 ```
 
@@ -76,7 +76,7 @@ build `idToDomain` map from `data[]` for CDDR.
 ```task
 id: CUST-WP-0003-T03
 state_hub_task_id: f0d5c107-6029-4ad0-af00-645d35ce7db0
-status: todo
+status: done
 priority: high
 ```
 
@@ -91,7 +91,7 @@ deps, no dependents) are valid and never form cycles.
 ```task
 id: CUST-WP-0003-T04
 state_hub_task_id: 6da60567-cc46-4a32-9855-b07bafe2faeb
-status: todo
+status: done
 priority: high
 ```
 
@@ -107,7 +107,7 @@ Using the graph from P2.1:
 ```task
 id: CUST-WP-0003-T05
 state_hub_task_id: 29b2dbbd-5d60-49b6-ae84-3dbf22167df7
-status: todo
+status: done
 priority: high
 ```
 
@@ -125,7 +125,7 @@ Factor into `computeWHI(nodes, edges, idToDomain)` for reuse in per-domain scope
 ```task
 id: CUST-WP-0003-T06
 state_hub_task_id: 8ce5ef74-5eb8-4259-9b11-dde13bf84a89
-status: todo
+status: done
 priority: medium
 ```
 
@@ -142,7 +142,7 @@ Store as `[{domain, whi, br, pep, cpi, openCount}]`. Skip domains with
 ```task
 id: CUST-WP-0003-T07
 state_hub_task_id: 91efba5c-3be2-4bfe-b5ef-1b261e9423f2
-status: todo
+status: done
 priority: high
 ```
 
@@ -163,7 +163,7 @@ Inject via `injectTocTop("whi-kpi-box", _whiBox)`. Wire
 ```task
 id: CUST-WP-0003-T08
 state_hub_task_id: 4c898472-e4ae-49a2-b6cd-7aa1a3c7604a
-status: todo
+status: done
 priority: medium
 ```
 
@@ -178,7 +178,7 @@ cycle detection, and how to improve a poor score. Update
 ```task
 id: CUST-WP-0003-T09
 state_hub_task_id: 20976663-7ac9-4909-8029-a479190f52ff
-status: todo
+status: done
 priority: low
 ```
 
@@ -186,3 +186,30 @@ Confirm `withDocHelp(_whiBox, "/docs/workstream-health-index")` is wired
 (from P3). Add `{ name: "Workstream Health", path: "/docs/workstream-health-index" }`
 to the Reference pages array in `observablehq.config.js`. Verify
 Reference nav renders correctly in `npm run dev`.
+
+## Implementation Evidence - 2026-06-04
+
+This workplan was stale: the WHI implementation already existed in the current
+State Hub dashboard worktree, but all tasks were still marked `todo`.
+
+Evidence reviewed:
+
+- `dashboard/src/workstreams.md` derives dependency edges from `/state/deps`,
+  computes DD, BR, SPR, PEP, CDDR, CPI, the weighted WHI score, and per-domain
+  intra-domain WHI breakdown.
+- The Workplans page injects the WHI KPI card through
+  `injectTocTop("whi-kpi-box", _whiBox)` and wires
+  `withDocHelp(_whiBox, "/docs/workstream-health-index")`.
+- The card shows the global score, health label, submetric rows, cycle alert,
+  and domain breakdown.
+- `dashboard/src/docs/workstream-health-index.md` documents the metric,
+  thresholds, formula, CPI penalty, domain breakdown, and improvement actions.
+- `dashboard/src/reference.md` and `dashboard/observablehq.config.js` include
+  the Workstream Health reference page.
+- Verification:
+  - `npm test` in `dashboard/` passed: 11 tests.
+  - `npm run build` in `dashboard/` passed: 61 pages built, including
+    `/workstreams` and `/docs/workstream-health-index`, with 49 links
+    validated.
+
+All CUST-WP-0003 tasks are therefore complete and the workplan is finished.