feat(scheduler): live running indicators for cron-triggered jobs

Add api/status.php — reads all scheduled jobs' stat files and returns a
{id: status} map. The scheduler page polls it every 3s and lights up the
dot on any job whose stat shows status=running, clearing it when done.

Replace single vvRunningId with vvRunningSet (Set) so multiple jobs can
show as running simultaneously. vvSetDot/vvClearDot handle per-job dots
and the header dot for the active job. Remove stale-count detection from
vvFetchRight — status poll is now the single source of truth.

Plugin/usr/local/emhttp/plugins/varaverk/api/status.php

@@ -0,0 +1,19 @@
+<?php
+// Returns current run status for all scheduled jobs.
+// Used by the scheduler page to light up running indicators without user interaction.
+header('Content-Type: application/json');
+require_once dirname(__DIR__) . '/include/scheduler.php';
+
+$schedule = vv_schedule_load();
+$result   = [];
+foreach ($schedule as $id => $entry) {
+    $statFile = vv_job_stat_path($id);
+    if (!file_exists($statFile)) continue;
+    $stat   = json_decode(@file_get_contents($statFile) ?: '{}', true) ?: [];
+    $status = $stat['status'] ?? 'unknown';
+    if ($status === 'running' && !empty($stat['pid']) && !file_exists("/proc/{$stat['pid']}")) {
+        $status = 'error';
+    }
+    $result[$id] = $status;
+}
+echo json_encode($result);

Plugin/usr/local/emhttp/plugins/varaverk/pages/scheduler.php

@@ -302,13 +302,12 @@ foreach ($tree as $orch) {
 </div>
 
 <script>
-let vvActiveId   = null;
-let vvRunningId  = null;
-let vvLastTs     = 0;
-let vvStaleCount = 0;
-let vvPollTimer  = null;
-let vvEditorId   = null;
-let vvConfId     = null;
+let vvActiveId    = null;
+let vvRunningSet  = new Set();
+let vvPollTimer   = null;
+let vvStatusTimer = null;
+let vvEditorId    = null;
+let vvConfId      = null;
 
 function vvPost(url, data) {
   const params = new URLSearchParams({csrf_token, ...data});
@@ -391,7 +390,6 @@ function vvBackToSuggestions() {
   }
   vvActiveId = null;
   if (vvPollTimer) { clearInterval(vvPollTimer); vvPollTimer = null; }
-  vvSetRunning(null);
 
   document.getElementById('vv-log-pre').style.display           = 'none';
   document.getElementById('vv-editor').style.display            = 'none';
@@ -463,37 +461,44 @@ function vvFetchRight() {
         requestAnimationFrame(() => { pre.scrollTop = savedScroll; });
       }
       ts.textContent  = d.ts ? 'Last run: ' + new Date(d.ts * 1000).toLocaleString() : '';
-
-      // Running indicator: clear when log stops changing
-      if (vvRunningId === vvActiveId) {
-        if (d.ts && d.ts === vvLastTs) {
-          if (++vvStaleCount >= 2) vvSetRunning(null);
-        } else {
-          vvLastTs = d.ts || 0;
-          vvStaleCount = 0;
-        }
-      }
     })
     .catch(() => {});
 }
 
-function vvSetRunning(id) {
-  // Clear old dot
-  if (vvRunningId) {
-    const old = document.querySelector('[data-id="' + CSS.escape(vvRunningId) + '"]');
-    if (old) { const dot = old.querySelector('.vv-job-dot'); dot.className = 'vv-job-dot'; }
-  }
-  vvRunningId  = id;
-  vvLastTs     = 0;
-  vvStaleCount = 0;
-  const headerDot = document.getElementById('vv-log-dot');
-  if (id) {
-    headerDot.style.display = 'inline-block';
-    const job = document.querySelector('[data-id="' + CSS.escape(id) + '"]');
-    if (job) job.querySelector('.vv-job-dot').classList.add('vv-dot-running');
-  } else {
-    headerDot.style.display = 'none';
-  }
+function vvSetDot(id) {
+  const job = document.querySelector('[data-id="' + CSS.escape(id) + '"]');
+  if (job) job.querySelector('.vv-job-dot').classList.add('vv-dot-running');
+  if (id === vvActiveId) document.getElementById('vv-log-dot').style.display = 'inline-block';
+}
+
+function vvClearDot(id) {
+  const job = document.querySelector('[data-id="' + CSS.escape(id) + '"]');
+  if (job) job.querySelector('.vv-job-dot').classList.remove('vv-dot-running');
+  if (id === vvActiveId) document.getElementById('vv-log-dot').style.display = 'none';
+}
+
+function vvPollStatus() {
+  fetch('/plugins/varaverk/api/status.php')
+    .then(r => r.json())
+    .then(statuses => {
+      const nowRunning = new Set(
+        Object.entries(statuses).filter(([, s]) => s === 'running').map(([id]) => id)
+      );
+      for (const id of vvRunningSet) {
+        if (!nowRunning.has(id)) { vvClearDot(id); if (id === vvActiveId) vvFetchRight(); }
+      }
+      for (const id of nowRunning) {
+        if (!vvRunningSet.has(id)) { vvSetDot(id); if (id === vvActiveId) vvFetchRight(); }
+      }
+      vvRunningSet = nowRunning;
+    })
+    .catch(() => {});
+}
+
+function vvStartStatusPoll() {
+  if (vvStatusTimer) return;
+  vvPollStatus();
+  vvStatusTimer = setInterval(vvPollStatus, 3000);
 }
 
 function vvSelectLog(btn) {
@@ -505,12 +510,14 @@ function vvRunJob(btn) {
   const job = btn.closest('[data-id]');
   const id  = job.dataset.id;
   vvOpenRight(id);
-  vvSetRunning(id);
+  vvSetDot(id);
+  vvRunningSet.add(id);
   vvPost('/plugins/varaverk/api/run.php', {id})
     .then(d => {
       if (!d.ok) {
         document.getElementById('vv-log-pre').textContent = '✗ ' + (d.error ?? 'Failed to start');
-        vvSetRunning(null);
+        vvClearDot(id);
+        vvRunningSet.delete(id);
       }
     });
 }
@@ -519,12 +526,14 @@ function vvDryRun(btn) {
   const job = btn.closest('[data-id]');
   const id  = job.dataset.id;
   vvOpenRight(id);
-  vvSetRunning(id);
+  vvSetDot(id);
+  vvRunningSet.add(id);
   vvPost('/plugins/varaverk/api/dryrun.php', {id})
     .then(d => {
       if (!d.ok) {
         document.getElementById('vv-log-pre').textContent = '✗ ' + (d.error ?? 'Failed to start');
-        vvSetRunning(null);
+        vvClearDot(id);
+        vvRunningSet.delete(id);
       }
     });
 }
@@ -809,5 +818,6 @@ requestAnimationFrame(function() {
     }
     vvFitRight();
   }
+  vvStartStatusPoll();
 });
 </script>