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>

app/main.py

@@ -82,6 +82,7 @@ from app.routers.watchlist import router as watchlist_router
 from app.routers.sentiment import router as sentiment_router
 from app.routers.sr_levels import router as sr_levels_router
 from app.routers.tickers import router as tickers_router
+from app.routers.jobs import router as jobs_router
 
 
 def _configure_logging() -> None:
@@ -158,3 +159,4 @@ app.include_router(fundamentals_router, prefix="/api/v1")
 app.include_router(scores_router, prefix="/api/v1")
 app.include_router(trades_router, prefix="/api/v1")
 app.include_router(watchlist_router, prefix="/api/v1")
+app.include_router(jobs_router, prefix="/api/v1")