chore(wp-0070): dashboard metering header + 8h zero-window evidence

apiFetch sends X-StateHub-Component for legacy-meter attribution.
Captured legacy-meter-weekly-review-20260712.json (0 calls / 8h).

dashboard/src/components/config.js

@@ -89,7 +89,11 @@ export async function waitForVisible(ms) {
 export async function apiFetch(path, options = {}) {
   const url = path.startsWith("http") ? path : `${API}${path}`;
   const timeout = options.timeout ?? FETCH_TIMEOUT;
-  const {timeout: _timeout, cache = "no-store", ...fetchOptions} = options;
+  const {timeout: _timeout, cache = "no-store", headers: callerHeaders, ...fetchOptions} = options;
+  const headers = new Headers(callerHeaders ?? {});
+  if (!headers.has("X-StateHub-Component")) {
+    headers.set("X-StateHub-Component", "state-hub.dashboard");
+  }
   const ctrl = new AbortController();
   let timedOut = false;
   const timer = setTimeout(() => {
@@ -97,7 +101,7 @@ export async function apiFetch(path, options = {}) {
     ctrl.abort();
   }, timeout);
   try {
-    return await fetch(url, {cache, ...fetchOptions, signal: ctrl.signal});
+    return await fetch(url, {cache, headers, ...fetchOptions, signal: ctrl.signal});
   } catch (error) {
     if (timedOut || error?.name === "AbortError") {
       const message = `Request timed out after ${Math.round(timeout / 1000)}s: ${url}`;

workplans/STATE-WP-0070-workplan-terminology-phase2-retirement.md

@@ -155,6 +155,12 @@ Fixed `the-custodian/runtime/actions.py` + daily triage prompt to emit
 `workplan_id`; rebuilt dashboard `dist/` (removed stale `extensions.html`
 `/workstreams/` caller).
 
+Progress 2026-07-12: Fresh 8h capture (`legacy-meter-weekly-review-20260712.json`)
+— **0 calls** in window for all 18 legacy interfaces; retirement candidates
+at max. Dashboard `apiFetch` now sends `X-StateHub-Component: state-hub.dashboard`;
+`dist/` rebuilt. MCP alias removal (T03) still gated on 7 consecutive 8h zero
+windows (streak ≥3 since 2026-07-10 decline).
+
 ## Task: Closeout and fleet gate
 
 ```task