Fix score refresh, add granular fetch and live job status

Scores never updated ("101d ago"): get_score only recomputes stale/
missing dimensions, but nothing marked them stale on new data, and there
was no scheduled scoring job.
- Fetch endpoint force-recomputes dimensions + composite.
- Scheduled scan (scan_all_tickers) refreshes scores per ticker, so
  scores stay current globally, not just on manual fetch.

Granular fetch: /ingestion/fetch accepts a sources filter; the freshness
bar gets a per-row refresh button (OHLCV/Sentiment/Fundamentals fetch
that provider only — marked paid; S/R/Scores recompute for free). Header
button is now "Fetch All".

Job visibility: GET /jobs/running (any user) + sidebar live indicator
showing running scheduled jobs with progress, polled every 10s.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/components/layout/Sidebar.tsx

@@ -2,6 +2,7 @@ import { NavLink } from 'react-router-dom';
 import { useQuery } from '@tanstack/react-query';
 import { useAuthStore } from '../../stores/authStore';
 import { check as healthCheck } from '../../api/health';
+import { getRunningJobs } from '../../api/jobs';
 
 const navItems = [
   { to: '/', label: 'Overview', index: '01', end: true },
@@ -28,6 +29,16 @@ export default function Sidebar() {
 
   const isBackendUp = health.isSuccess;
 
+  const jobs = useQuery({
+    queryKey: ['jobs', 'running'],
+    queryFn: getRunningJobs,
+    refetchInterval: 10_000,
+    retry: 1,
+    enabled: isBackendUp,
+  });
+
+  const running = jobs.data?.running ?? [];
+
   return (
     <aside className="hidden lg:flex lg:flex-col lg:w-64 h-screen sticky top-0 glass border-r border-white/[0.06] rounded-none border-l-0 border-t-0 border-b-0">
       {/* Brand */}
@@ -69,6 +80,23 @@ export default function Sidebar() {
             {isBackendUp ? 'Backend online' : 'Backend offline'}
           </span>
         </div>
+
+        {/* Live background-job activity */}
+        {running.length > 0 && (
+          <div className="px-1 space-y-1">
+            {running.map((job) => (
+              <div key={job.name} className="flex items-center gap-2">
+                <span className="inline-block h-1.5 w-1.5 rounded-full bg-blue-400 animate-signal-pulse shrink-0" />
+                <span className="text-[11px] text-gray-400 truncate">
+                  {job.label}
+                  {job.progress_pct != null && (
+                    <span className="num text-gray-500"> {Math.round(job.progress_pct)}%</span>
+                  )}
+                </span>
+              </div>
+            ))}
+          </div>
+        )}
         {username && (
           <p className="text-xs text-gray-500 truncate px-1">Signed in as {username}</p>
         )}