fix: BUG-11 — Dashboard GPS now shows lat/lon from API when stale, Status page uses same 30s staleness threshold

BUGS.md

@@ -40,6 +40,25 @@ When CLOSED, move the entire entry to Resolved — don't duplicate.
 
 ---
 
+### BUG-11 — Dashboard GPS shows "Stale fix" while Status shows "Live fix"
+- **Status**: `OPEN`
+- **Severity**: Low
+- **Area**: `static/js/yaris.js`, `static/js/status.js`
+- **Phase**: Phase 26
+- **Symptom**: Dashboard shows "Stale fix", lat/lon blank. Status page shows "Live fix"
+  with valid coordinates. Both pages query the same `/api/gps/status` endpoint.
+- **Root cause**: Dashboard `renderGpsStatus()` updates badge + age text but never
+  populates lat/lon fields — those only receive data from the live `socket.on('gps_location')`
+  event. Status page reads `gps.latitude`/`gps.longitude` directly from the API response.
+  Also, the staleness thresholds differ: Dashboard marks stale at >30s, Status page
+  ignores age entirely.
+- **Fix scope**: `renderGpsStatus()` should populate lat/lon from the API response
+  (already present in `status.latitude`, `status.longitude`).
+- **Acceptance**: Dashboard GPS card matches Status page — both show same fix status
+  and coordinates.
+
+---
+
 ## Resolved
 
 ### BUG-03 — DTC/MIL codes never persisted

static/js/status.js

@@ -215,7 +215,10 @@ function renderHealth(health) {
 
 function renderGpsAndCellular(gps, cellularHat) {
     const liveFix = gps.thread_alive && gps.has_fix;
-    if (liveFix) {
+    const staleFix = liveFix && gps.fix_age_seconds != null && gps.fix_age_seconds > 30;
+    if (staleFix) {
+        setBadge('gps-badge', 'Stale fix', 'text-bg-warning');
+    } else if (liveFix) {
         setBadge('gps-badge', 'Live fix', 'text-bg-success');
     } else if (gps.thread_alive) {
         setBadge('gps-badge', 'No fix', 'text-bg-warning');

static/js/yaris.js

@@ -221,7 +221,8 @@ function formatGpsAge(seconds) {
 function renderGpsStatus(status) {
     const liveBadge = document.getElementById('gps-live-badge');
     const fixDetail = document.getElementById('gps-fix-detail');
-    if (!liveBadge || !fixDetail) return;
+    const locX = document.getElementById('gpsLocationX');
+    const locY = document.getElementById('gpsLocationY');
 
     let label = 'Unavailable';
     let badgeClass = 'text-bg-secondary';
@@ -233,6 +234,9 @@ function renderGpsStatus(status) {
             label = stale ? 'Stale fix' : 'Live fix';
             badgeClass = stale ? 'text-bg-warning' : 'text-bg-success';
             detail = formatGpsAge(status.fix_age_seconds);
+            // Show lat/lon from API response (not just socket events)
+            if (locX) locX.textContent = status.latitude != null ? status.latitude.toFixed(6) : '—';
+            if (locY) locY.textContent = status.longitude != null ? status.longitude.toFixed(6) : '—';
         } else {
             label = 'No fix';
             badgeClass = 'text-bg-warning';