Add system alerts log with nav badge and Admin Alerts tab.

Persist job and ingestion warnings/errors for 7 days, surface a dismissible top-nav badge, treat stale OHLCV as a warning (e.g. ticker renames), and show market bar age on the ticker freshness chip.

alembic/versions/021_add_system_events.py

@@ -0,0 +1,55 @@
+"""add system_events table for operational warnings/errors
+
+Revision ID: 021
+Revises: 020
+Create Date: 2026-07-14 00:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision: str = "021"
+down_revision: Union[str, None] = "020"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "system_events",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("severity", sa.String(length=16), nullable=False),
+        sa.Column("source", sa.String(length=64), nullable=False),
+        sa.Column("code", sa.String(length=64), nullable=False),
+        sa.Column("message", sa.Text(), nullable=False),
+        sa.Column("symbol", sa.String(length=20), nullable=True),
+        sa.Column("dedup_key", sa.String(length=200), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("acknowledged_at", sa.DateTime(timezone=True), nullable=True),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_index(
+        "ix_system_events_created_at",
+        "system_events",
+        ["created_at"],
+    )
+    op.create_index(
+        "ix_system_events_ack_created",
+        "system_events",
+        ["acknowledged_at", "created_at"],
+    )
+    op.create_index(
+        "ix_system_events_dedup_created",
+        "system_events",
+        ["dedup_key", "created_at"],
+    )
+
+
+def downgrade() -> None:
+    op.drop_index("ix_system_events_dedup_created", table_name="system_events")
+    op.drop_index("ix_system_events_ack_created", table_name="system_events")
+    op.drop_index("ix_system_events_created_at", table_name="system_events")
+    op.drop_table("system_events")

app/models/__init__.py

@@ -13,6 +13,7 @@ from app.models.paper_trade import PaperTrade
 from app.models.regime_snapshot import RegimeSnapshot
 from app.models.benchmark_price import BenchmarkPrice
 from app.models.signal_context_snapshot import SignalContextSnapshot
+from app.models.system_event import SystemEvent
 
 __all__ = [
     "Ticker",
@@ -32,4 +33,5 @@ __all__ = [
     "RegimeSnapshot",
     "BenchmarkPrice",
     "SignalContextSnapshot",
+    "SystemEvent",
 ]

app/models/system_event.py

@@ -0,0 +1,37 @@
+"""Operational system events (warnings/errors) for the admin UI and top-nav badge."""
+
+from datetime import datetime
+
+from sqlalchemy import DateTime, Index, String, Text
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.database import Base
+
+
+class SystemEvent(Base):
+    """Durable warning/error record (jobs, ingestion, pipelines).
+
+    ``acknowledged_at`` is set when a user dismisses the nav badge / clears
+    events — history still shows in Admin → Jobs for the retention window.
+    """
+
+    __tablename__ = "system_events"
+    __table_args__ = (
+        Index("ix_system_events_created_at", "created_at"),
+        Index("ix_system_events_ack_created", "acknowledged_at", "created_at"),
+        Index("ix_system_events_dedup_created", "dedup_key", "created_at"),
+    )
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    severity: Mapped[str] = mapped_column(String(16), nullable=False)  # warning | error
+    source: Mapped[str] = mapped_column(String(64), nullable=False)
+    code: Mapped[str] = mapped_column(String(64), nullable=False)
+    message: Mapped[str] = mapped_column(Text, nullable=False)
+    symbol: Mapped[str | None] = mapped_column(String(20), nullable=True)
+    dedup_key: Mapped[str | None] = mapped_column(String(200), nullable=True)
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), default=datetime.utcnow, nullable=False
+    )
+    acknowledged_at: Mapped[datetime | None] = mapped_column(
+        DateTime(timezone=True), nullable=True
+    )

app/routers/admin.py

@@ -6,7 +6,7 @@ All endpoints require admin role.
 from fastapi import APIRouter, Depends, Query
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from app.dependencies import get_db, require_admin
+from app.dependencies import get_db, require_access, require_admin
 from app.models.user import User
 from app.schemas.admin import (
     ActivationConfigUpdate,
@@ -29,6 +29,7 @@ from app.schemas.common import APIEnvelope
 from app.services import admin_service
 from app.services import alert_service
 from app.services import sentiment_provider_service
+from app.services import system_event_service
 from app.services import ticker_universe_service
 
 router = APIRouter(tags=["admin"])
@@ -403,3 +404,50 @@ async def toggle_job(
         status="success",
         data={"key": setting.key, "value": setting.value},
     )
+
+
+# ---------------------------------------------------------------------------
+# System events (operational warnings / errors)
+# ---------------------------------------------------------------------------
+
+@router.get("/admin/system-events", response_model=APIEnvelope)
+async def list_system_events(
+    days: int = Query(7, ge=1, le=30),
+    severity: str | None = Query(None, description="warning | error"),
+    unacknowledged_only: bool = Query(False),
+    _user: User = Depends(require_access),
+    db: AsyncSession = Depends(get_db),
+):
+    """List recent system events (default last 7 days)."""
+    rows = await system_event_service.list_events(
+        db,
+        days=days,
+        severity=severity,
+        unacknowledged_only=unacknowledged_only,
+    )
+    return APIEnvelope(
+        status="success",
+        data=[system_event_service.event_to_dict(r) for r in rows],
+    )
+
+
+@router.get("/admin/system-events/summary", response_model=APIEnvelope)
+async def system_events_summary(
+    days: int = Query(7, ge=1, le=30),
+    _user: User = Depends(require_access),
+    db: AsyncSession = Depends(get_db),
+):
+    """Badge counts for the top nav."""
+    data = await system_event_service.summary(db, days=days)
+    return APIEnvelope(status="success", data=data)
+
+
+@router.post("/admin/system-events/acknowledge", response_model=APIEnvelope)
+async def acknowledge_system_events(
+    days: int = Query(7, ge=1, le=30),
+    _user: User = Depends(require_access),
+    db: AsyncSession = Depends(get_db),
+):
+    """Dismiss unacknowledged events in the lookback window (clears the badge)."""
+    count = await system_event_service.acknowledge_all(db, days=days)
+    return APIEnvelope(status="success", data={"acknowledged": count})

app/routers/ingestion.py

@@ -117,12 +117,32 @@ async def fetch_symbol(
             result = await ingestion_service.fetch_and_ingest(
                 db, provider, symbol_upper, start_date, end_date
             )
-            status_map = {"complete": "ok", "partial": "ok", "no_data": "warning"}
+            # "stale" = provider returned nothing but our last bar is old
+            # (rename/delist/halt) — must not look like a successful refresh.
+            status_map = {
+                "complete": "ok",
+                "partial": "ok",
+                "no_data": "warning",
+                "stale": "warning",
+            }
             sources_out["ohlcv"] = {
                 "status": status_map.get(result.status, "error"),
                 "records": result.records_ingested,
                 "message": result.message,
+                "last_date": result.last_date.isoformat() if result.last_date else None,
             }
+            if result.status in ("stale", "no_data", "error"):
+                from app.services.system_event_service import log_event
+
+                await log_event(
+                    db,
+                    severity="warning" if result.status != "error" else "error",
+                    source="ingestion",
+                    code=f"ohlcv_{result.status}",
+                    message=result.message or f"OHLCV fetch {result.status} for {symbol_upper}",
+                    symbol=symbol_upper,
+                    dedup_key=f"ohlcv_{result.status}:{symbol_upper}",
+                )
         except Exception as exc:
             logger.error("OHLCV fetch failed for %s: %s", symbol_upper, exc)
             sources_out["ohlcv"] = {"status": "error", "records": 0, "message": str(exc)}

app/scheduler.py

@@ -152,6 +152,28 @@ def _log_job_error(job_name: str, ticker: str, error: Exception) -> None:
     )
 
 
+async def _record_system_event(
+    *,
+    severity: str,
+    source: str,
+    code: str,
+    message: str,
+    symbol: str | None = None,
+    dedup_key: str | None = None,
+) -> None:
+    """Best-effort durable event for Admin → Jobs and the top-nav badge."""
+    from app.services.system_event_service import log_event_standalone
+
+    await log_event_standalone(
+        severity=severity,
+        source=source,
+        code=code,
+        message=message,
+        symbol=symbol,
+        dedup_key=dedup_key,
+    )
+
+
 def _runtime_start(job_name: str, total: int | None = None, message: str | None = None) -> None:
     _job_runtime[job_name] = {
         **_idle_runtime(),
@@ -206,6 +228,22 @@ def _runtime_finish(
         "message": message,
     })
     _job_runtime[job_name] = runtime
+    # Durable event for error / rate-limit finishes (badge + Admin → Jobs panel).
+    if status in ("error", "rate_limited"):
+        severity = "error" if status == "error" else "warning"
+        try:
+            loop = asyncio.get_running_loop()
+            loop.create_task(
+                _record_system_event(
+                    severity=severity,
+                    source=job_name,
+                    code=f"job_{status}",
+                    message=message or f"Job {job_name} finished with status {status}",
+                    dedup_key=f"job:{job_name}:{status}:{(message or '')[:80]}"[:200],
+                )
+            )
+        except RuntimeError:
+            pass
 
 
 def get_job_runtime_snapshot(job_name: str | None = None) -> dict[str, dict[str, object]] | dict[str, object]:
@@ -489,6 +527,15 @@ async def collect_ohlcv(full_backfill: bool = False, job_name: str = "data_colle
                     processed += 1
                     _runtime_progress(job_name, processed=processed, total=total, current_ticker=symbol)
                     _log_event(logging.INFO, "ticker_collected", job=job_name, ticker=symbol, status=result.status, records=result.records_ingested)
+                    if result.status == "stale":
+                        await _record_system_event(
+                            severity="warning",
+                            source=job_name,
+                            code="ohlcv_stale",
+                            message=result.message or f"No new OHLCV bars for {symbol}",
+                            symbol=symbol,
+                            dedup_key=f"ohlcv_stale:{symbol}",
+                        )
                     if result.status == "partial":
                         # Rate limited — stop and resume next run
                         _log_event(logging.WARNING, "rate_limited", job=job_name, ticker=symbol, processed=processed)
@@ -496,6 +543,14 @@ async def collect_ohlcv(full_backfill: bool = False, job_name: str = "data_colle
                         return
                 except Exception as exc:
                     _log_job_error(job_name, symbol, exc)
+                    await _record_system_event(
+                        severity="error",
+                        source=job_name,
+                        code="job_ticker_error",
+                        message=f"{type(exc).__name__}: {exc}",
+                        symbol=symbol,
+                        dedup_key=f"job_ticker_error:{job_name}:{symbol}:{type(exc).__name__}",
+                    )
 
         # Reset resume pointer on full completion
         _last_successful[job_name] = None

app/services/ingestion_service.py

@@ -59,6 +59,19 @@ async def _get_ohlcv_bar_count(db: AsyncSession, ticker_id: int) -> int:
     return int(result.scalar() or 0)
 
 
+async def _get_latest_ohlcv_date(db: AsyncSession, ticker_id: int) -> date | None:
+    result = await db.execute(
+        select(func.max(OHLCVRecord.date)).where(OHLCVRecord.ticker_id == ticker_id)
+    )
+    return result.scalar_one_or_none()
+
+
+# If the provider returns no bars but our last stored session is older than this,
+# treat the run as stale (not "success / up to date"). Common causes: ticker
+# rename, delisting, or multi-day halt — SATS→ECHO is the canonical example.
+_STALE_OHLCV_GAP_DAYS = 5
+
+
 async def _update_progress(
     db: AsyncSession, ticker_id: int, last_date: date
 ) -> None:
@@ -145,8 +158,9 @@ async def fetch_and_ingest(
 
     # Provider returned nothing. With no history at all this almost always means
     # the provider doesn't cover this symbol (Alpaca = US listings only) — surface
-    # that instead of a misleading "success". With existing bars it just means
+    # that instead of a misleading "success". With recent history, an empty window
-    # there were no new bars in the requested window.
+    # usually means weekends/holidays. With a multi-day gap, the symbol is likely
+    # halted, delisted, or *renamed* (e.g. SATS → ECHO) and we must not claim success.
     if not records:
         existing = await _get_ohlcv_bar_count(db, ticker.id)
         if existing == 0:
@@ -160,10 +174,24 @@ async def fetch_and_ingest(
                     "(Alpaca serves US-listed securities only)."
                 ),
             )
+        latest = await _get_latest_ohlcv_date(db, ticker.id)
+        gap_days = (end_date - latest).days if latest is not None else None
+        if gap_days is not None and gap_days > _STALE_OHLCV_GAP_DAYS:
+            return IngestionResult(
+                symbol=ticker.symbol,
+                records_ingested=0,
+                last_date=latest,
+                status="stale",
+                message=(
+                    f"No new bars since {latest.isoformat()} ({gap_days}d gap). "
+                    "The symbol may be halted, delisted, or renamed under a new ticker — "
+                    "check the listing and add/fetch the current symbol if it changed."
+                ),
+            )
         return IngestionResult(
             symbol=ticker.symbol,
             records_ingested=0,
-            last_date=None,
+            last_date=latest,
             status="complete",
             message="Already up to date — no new bars.",
         )

app/services/system_event_service.py

@@ -0,0 +1,191 @@
+"""Persist and query operational system events (warnings / errors)."""
+
+from __future__ import annotations
+
+import logging
+from datetime import datetime, timedelta, timezone
+
+from sqlalchemy import select, update
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.system_event import SystemEvent
+
+logger = logging.getLogger(__name__)
+
+DEFAULT_LOOKBACK_DAYS = 7
+DEFAULT_DEDUP_HOURS = 24
+SEVERITIES = frozenset({"warning", "error"})
+
+
+async def log_event(
+    db: AsyncSession,
+    *,
+    severity: str,
+    source: str,
+    code: str,
+    message: str,
+    symbol: str | None = None,
+    dedup_key: str | None = None,
+    dedup_hours: int = DEFAULT_DEDUP_HOURS,
+) -> SystemEvent | None:
+    """Insert a system event, optionally de-duplicating recent identical keys.
+
+    Returns the new row, or None when a recent dedup_key already exists.
+    Commits the session.
+    """
+    severity = (severity or "").strip().lower()
+    if severity not in SEVERITIES:
+        severity = "warning"
+    source = (source or "system")[:64]
+    code = (code or "unknown")[:64]
+    message = (message or "").strip() or code
+    symbol = symbol.strip().upper()[:20] if symbol else None
+    dedup_key = dedup_key[:200] if dedup_key else None
+
+    if dedup_key:
+        cutoff = datetime.now(timezone.utc) - timedelta(hours=max(1, dedup_hours))
+        existing = await db.execute(
+            select(SystemEvent.id)
+            .where(
+                SystemEvent.dedup_key == dedup_key,
+                SystemEvent.created_at >= cutoff,
+            )
+            .limit(1)
+        )
+        if existing.scalar_one_or_none() is not None:
+            return None
+
+    row = SystemEvent(
+        severity=severity,
+        source=source,
+        code=code,
+        message=message[:4000],
+        symbol=symbol,
+        dedup_key=dedup_key,
+        created_at=datetime.now(timezone.utc),
+    )
+    db.add(row)
+    await db.commit()
+    await db.refresh(row)
+    return row
+
+
+async def log_event_standalone(
+    *,
+    severity: str,
+    source: str,
+    code: str,
+    message: str,
+    symbol: str | None = None,
+    dedup_key: str | None = None,
+) -> None:
+    """Open a short-lived session and log an event (for scheduler / fire-and-forget)."""
+    try:
+        from app.database import async_session_factory
+
+        async with async_session_factory() as db:
+            await log_event(
+                db,
+                severity=severity,
+                source=source,
+                code=code,
+                message=message,
+                symbol=symbol,
+                dedup_key=dedup_key,
+            )
+    except Exception:
+        logger.exception("Failed to persist system event %s/%s", source, code)
+
+
+async def list_events(
+    db: AsyncSession,
+    *,
+    days: int = DEFAULT_LOOKBACK_DAYS,
+    severity: str | None = None,
+    unacknowledged_only: bool = False,
+    limit: int = 200,
+) -> list[SystemEvent]:
+    days = max(1, min(int(days), 30))
+    cutoff = datetime.now(timezone.utc) - timedelta(days=days)
+    stmt = (
+        select(SystemEvent)
+        .where(SystemEvent.created_at >= cutoff)
+        .order_by(SystemEvent.created_at.desc())
+        .limit(max(1, min(limit, 500)))
+    )
+    if severity in SEVERITIES:
+        stmt = stmt.where(SystemEvent.severity == severity)
+    if unacknowledged_only:
+        stmt = stmt.where(SystemEvent.acknowledged_at.is_(None))
+    result = await db.execute(stmt)
+    return list(result.scalars().all())
+
+
+async def summary(
+    db: AsyncSession,
+    *,
+    days: int = DEFAULT_LOOKBACK_DAYS,
+) -> dict:
+    """Counts for badge + admin header."""
+    days = max(1, min(int(days), 30))
+    cutoff = datetime.now(timezone.utc) - timedelta(days=days)
+    rows = (
+        await db.execute(
+            select(SystemEvent.severity, SystemEvent.acknowledged_at).where(
+                SystemEvent.created_at >= cutoff
+            )
+        )
+    ).all()
+    total = len(rows)
+    unacked = 0
+    errors = 0
+    warnings = 0
+    for severity, acknowledged_at in rows:
+        if acknowledged_at is not None:
+            continue
+        unacked += 1
+        if severity == "error":
+            errors += 1
+        elif severity == "warning":
+            warnings += 1
+    return {
+        "days": days,
+        "total": total,
+        "unacknowledged": unacked,
+        "unacknowledged_errors": errors,
+        "unacknowledged_warnings": warnings,
+    }
+
+
+async def acknowledge_all(
+    db: AsyncSession,
+    *,
+    days: int = DEFAULT_LOOKBACK_DAYS,
+) -> int:
+    """Mark unacknowledged events in the lookback window as dismissed. Returns count."""
+    days = max(1, min(int(days), 30))
+    cutoff = datetime.now(timezone.utc) - timedelta(days=days)
+    now = datetime.now(timezone.utc)
+    result = await db.execute(
+        update(SystemEvent)
+        .where(
+            SystemEvent.created_at >= cutoff,
+            SystemEvent.acknowledged_at.is_(None),
+        )
+        .values(acknowledged_at=now)
+    )
+    await db.commit()
+    return int(result.rowcount or 0)
+
+
+def event_to_dict(row: SystemEvent) -> dict:
+    return {
+        "id": row.id,
+        "severity": row.severity,
+        "source": row.source,
+        "code": row.code,
+        "message": row.message,
+        "symbol": row.symbol,
+        "created_at": row.created_at.isoformat() if row.created_at else None,
+        "acknowledged_at": row.acknowledged_at.isoformat() if row.acknowledged_at else None,
+    }

frontend/src/api/admin.ts

@@ -225,6 +225,50 @@ export function triggerJob(jobName: string, options?: { target_model?: BacktestT
     .then((r) => r.data);
 }
 
+// System events (operational warnings / errors)
+export interface SystemEvent {
+  id: number;
+  severity: 'warning' | 'error' | string;
+  source: string;
+  code: string;
+  message: string;
+  symbol: string | null;
+  created_at: string | null;
+  acknowledged_at: string | null;
+}
+
+export interface SystemEventSummary {
+  days: number;
+  total: number;
+  unacknowledged: number;
+  unacknowledged_errors: number;
+  unacknowledged_warnings: number;
+}
+
+export function listSystemEvents(params?: {
+  days?: number;
+  severity?: string;
+  unacknowledged_only?: boolean;
+}) {
+  return apiClient
+    .get<SystemEvent[]>('admin/system-events', { params })
+    .then((r) => r.data);
+}
+
+export function getSystemEventSummary(days = 7) {
+  return apiClient
+    .get<SystemEventSummary>('admin/system-events/summary', { params: { days } })
+    .then((r) => r.data);
+}
+
+export function acknowledgeSystemEvents(days = 7) {
+  return apiClient
+    .post<{ acknowledged: number }>('admin/system-events/acknowledge', null, {
+      params: { days },
+    })
+    .then((r) => r.data);
+}
+
 // Data cleanup
 export function cleanupData(olderThanDays: number) {
   return apiClient

frontend/src/components/admin/SystemEventsPanel.tsx

@@ -0,0 +1,96 @@
+import { useSystemEvents, useAcknowledgeSystemEvents } from '../../hooks/useAdmin';
+import { SkeletonTable } from '../ui/Skeleton';
+import { Button } from '../ui/Button';
+
+function formatWhen(iso: string | null): string {
+  if (!iso) return '—';
+  const d = new Date(iso);
+  const mins = Math.floor((Date.now() - d.getTime()) / 60_000);
+  if (mins < 1) return 'just now';
+  if (mins < 60) return `${mins}m ago`;
+  const hrs = Math.floor(mins / 60);
+  if (hrs < 24) return `${hrs}h ago`;
+  const days = Math.floor(hrs / 24);
+  if (days < 7) return `${days}d ago`;
+  return d.toLocaleString();
+}
+
+function severityClass(severity: string): string {
+  if (severity === 'error') return 'text-red-300 border-red-400/30 bg-red-500/10';
+  return 'text-amber-300 border-amber-400/30 bg-amber-500/10';
+}
+
+export function SystemEventsPanel() {
+  const { data: events, isLoading, isError } = useSystemEvents(7);
+  const ack = useAcknowledgeSystemEvents();
+  const unacked = (events ?? []).filter((e) => !e.acknowledged_at).length;
+
+  if (isLoading) return <SkeletonTable rows={4} cols={3} />;
+  if (isError) {
+    return (
+      <div className="glass p-4 text-sm text-red-300">
+        Failed to load system events.
+      </div>
+    );
+  }
+
+  const rows = events ?? [];
+
+  return (
+    <div className="glass p-5">
+      <div className="mb-3 flex flex-wrap items-start justify-between gap-3">
+        <div>
+          <h3 className="text-xs font-medium uppercase tracking-widest text-gray-500">
+            System alerts
+          </h3>
+          <p className="mt-1 text-[11.5px] text-gray-500">
+            Operational warnings and errors — jobs, ingestion, renames/stale data, and other sources · last 7 days
+            {unacked > 0 ? ` · ${unacked} open` : ''}
+          </p>
+        </div>
+        <Button
+          variant="ghost"
+          onClick={() => ack.mutate(7)}
+          disabled={ack.isPending || unacked === 0}
+        >
+          {ack.isPending ? 'Dismissing…' : 'Dismiss open alerts'}
+        </Button>
+      </div>
+
+      {rows.length === 0 ? (
+        <p className="text-sm text-gray-500">No warnings or errors in the last 7 days.</p>
+      ) : (
+        <ul className="divide-y divide-white/[0.05]">
+          {rows.map((e) => (
+            <li
+              key={e.id}
+              className={`flex flex-col gap-1 py-2.5 sm:flex-row sm:items-start sm:justify-between sm:gap-4 ${
+                e.acknowledged_at ? 'opacity-50' : ''
+              }`}
+            >
+              <div className="min-w-0">
+                <div className="flex flex-wrap items-center gap-2">
+                  <span
+                    className={`num rounded border px-1.5 py-0.5 text-[10px] font-semibold uppercase tracking-wider ${severityClass(e.severity)}`}
+                  >
+                    {e.severity}
+                  </span>
+                  <span className="num text-[11px] text-gray-500">{e.source}</span>
+                  {e.symbol && (
+                    <span className="num text-[11px] font-medium text-blue-300">{e.symbol}</span>
+                  )}
+                  {e.acknowledged_at && (
+                    <span className="text-[10px] text-gray-600">dismissed</span>
+                  )}
+                </div>
+                <p className="mt-1 text-[13px] leading-snug text-gray-200">{e.message}</p>
+                <p className="mt-0.5 num text-[10px] text-gray-600">{e.code}</p>
+              </div>
+              <span className="num shrink-0 text-[11px] text-gray-500">{formatWhen(e.created_at)}</span>
+            </li>
+          ))}
+        </ul>
+      )}
+    </div>
+  );
+}

frontend/src/components/layout/TopBar.tsx

@@ -1,9 +1,11 @@
+import { useState } from 'react';
 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';
 import { useMarketRegime } from '../../hooks/useMarketRegime';
+import { useSystemEventSummary, useAcknowledgeSystemEvents } from '../../hooks/useAdmin';
 import { regimeDot, regimeHeadline } from '../../lib/regime';
 import TickerSearch from './TickerSearch';
 
@@ -24,6 +26,7 @@ const linkClasses = (isActive: boolean) =>
 /** Desktop command bar — the mockup's top navigation. MobileNav covers <lg. */
 export default function TopBar() {
   const { role, username, logout } = useAuthStore();
+  const [alertsOpen, setAlertsOpen] = useState(false);
 
   const health = useQuery({
     queryKey: ['health'],
@@ -42,6 +45,11 @@ export default function TopBar() {
     enabled: isBackendUp,
   });
 
+  const eventSummary = useSystemEventSummary(7);
+  const ackEvents = useAcknowledgeSystemEvents();
+  const unacked = eventSummary.data?.unacknowledged ?? 0;
+  const unackedErrors = eventSummary.data?.unacknowledged_errors ?? 0;
+
   const running = jobs.data?.running ?? [];
   const regime = useMarketRegime();
 
@@ -108,6 +116,85 @@ export default function TopBar() {
             </span>
           </span>
         )}
+
+        {/* System alerts badge — open issues from jobs / ingestion */}
+        <div className="relative">
+          <button
+            type="button"
+            onClick={() => setAlertsOpen((v) => !v)}
+            className={`relative flex items-center gap-1.5 rounded-md px-1.5 py-1 text-[11px] transition-colors ${
+              unacked > 0
+                ? unackedErrors > 0
+                  ? 'text-red-300 hover:bg-red-500/10'
+                  : 'text-amber-300 hover:bg-amber-500/10'
+                : 'text-gray-500 hover:bg-white/[0.04] hover:text-gray-300'
+            }`}
+            title={unacked > 0 ? `${unacked} open system alert${unacked === 1 ? '' : 's'}` : 'No open system alerts'}
+            aria-label={unacked > 0 ? `${unacked} open system alerts` : 'System alerts'}
+            aria-expanded={alertsOpen}
+          >
+            <svg className="h-4 w-4" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={1.75}>
+              <path strokeLinecap="round" strokeLinejoin="round" d="M15 17h5l-1.4-1.4A2 2 0 0118 14.2V11a6 6 0 10-12 0v3.2c0 .5-.2 1-.6 1.4L4 17h5m6 0v1a3 3 0 11-6 0v-1m6 0H9" />
+            </svg>
+            {unacked > 0 && (
+              <span className={`num min-w-[1.1rem] rounded-full px-1 text-center text-[10px] font-semibold ${
+                unackedErrors > 0 ? 'bg-red-500/25 text-red-200' : 'bg-amber-500/25 text-amber-100'
+              }`}>
+                {unacked > 99 ? '99+' : unacked}
+              </span>
+            )}
+          </button>
+          {alertsOpen && (
+            <>
+              <button
+                type="button"
+                className="fixed inset-0 z-40 cursor-default"
+                aria-label="Close alerts"
+                onClick={() => setAlertsOpen(false)}
+              />
+              <div className="absolute right-0 top-full z-50 mt-2 w-72 rounded-xl border border-white/[0.08] bg-[#12141c] p-3 shadow-xl">
+                <p className="text-[11px] font-medium text-gray-300">
+                  {unacked > 0
+                    ? `${unacked} open alert${unacked === 1 ? '' : 's'} (last 7 days)`
+                    : 'No open alerts'}
+                </p>
+                {eventSummary.data && eventSummary.data.total > 0 && (
+                  <p className="mt-0.5 text-[10px] text-gray-500">
+                    {eventSummary.data.unacknowledged_errors} error
+                    {eventSummary.data.unacknowledged_errors === 1 ? '' : 's'}
+                    {' · '}
+                    {eventSummary.data.unacknowledged_warnings} warning
+                    {eventSummary.data.unacknowledged_warnings === 1 ? '' : 's'} open
+                  </p>
+                )}
+                <div className="mt-3 flex flex-col gap-1.5">
+                  {role === 'admin' && (
+                    <NavLink
+                      to="/admin"
+                      onClick={() => setAlertsOpen(false)}
+                      className="rounded-md px-2 py-1.5 text-[12px] text-blue-300 transition-colors hover:bg-white/[0.04]"
+                    >
+                      View in Admin → Alerts
+                    </NavLink>
+                  )}
+                  <button
+                    type="button"
+                    disabled={unacked === 0 || ackEvents.isPending}
+                    onClick={() => {
+                      ackEvents.mutate(7, {
+                        onSuccess: () => setAlertsOpen(false),
+                      });
+                    }}
+                    className="rounded-md px-2 py-1.5 text-left text-[12px] text-gray-300 transition-colors hover:bg-white/[0.04] disabled:opacity-40"
+                  >
+                    {ackEvents.isPending ? 'Dismissing…' : 'Dismiss open alerts'}
+                  </button>
+                </div>
+              </div>
+            </>
+          )}
+        </div>
+
         <span
           className={`inline-block h-2 w-2 rounded-full ${
             isBackendUp ? 'bg-emerald-400 shadow-lg shadow-emerald-400/50' : 'bg-red-400 shadow-lg shadow-red-400/50'

frontend/src/hooks/useAdmin.ts

@@ -337,6 +337,41 @@ export function useToggleJob() {
   });
 }
 
+// ── System events ──
+
+export function useSystemEvents(days = 7) {
+  return useQuery({
+    queryKey: ['admin', 'system-events', days],
+    queryFn: () => adminApi.listSystemEvents({ days }),
+    refetchInterval: 30_000,
+  });
+}
+
+export function useSystemEventSummary(days = 7) {
+  return useQuery({
+    queryKey: ['admin', 'system-events-summary', days],
+    queryFn: () => adminApi.getSystemEventSummary(days),
+    refetchInterval: 30_000,
+  });
+}
+
+export function useAcknowledgeSystemEvents() {
+  const qc = useQueryClient();
+  const { addToast } = useToast();
+
+  return useMutation({
+    mutationFn: (days = 7) => adminApi.acknowledgeSystemEvents(days),
+    onSuccess: (data) => {
+      qc.invalidateQueries({ queryKey: ['admin', 'system-events'] });
+      qc.invalidateQueries({ queryKey: ['admin', 'system-events-summary'] });
+      addToast('success', `Dismissed ${data.acknowledged} alert${data.acknowledged === 1 ? '' : 's'}`);
+    },
+    onError: (error: Error) => {
+      addToast('error', error.message || 'Failed to dismiss alerts');
+    },
+  });
+}
+
 export function useTriggerJob() {
   const qc = useQueryClient();
   const { addToast } = useToast();

frontend/src/pages/AdminPage.tsx

@@ -6,6 +6,7 @@ import { SentimentProviderSettings } from '../components/admin/SentimentProvider
 import { DataCleanup } from '../components/admin/DataCleanup';
 import { JobControls } from '../components/admin/JobControls';
 import { PipelineReadinessPanel } from '../components/admin/PipelineReadinessPanel';
+import { SystemEventsPanel } from '../components/admin/SystemEventsPanel';
 import { RecommendationSettings } from '../components/admin/RecommendationSettings';
 import { ScheduleSettings } from '../components/admin/ScheduleSettings';
 import { SettingsForm } from '../components/admin/SettingsForm';
@@ -15,7 +16,7 @@ import { UserTable } from '../components/admin/UserTable';
 import { PageHeader } from '../components/ui/PageHeader';
 import { Tabs } from '../components/ui/Tabs';
 
-const tabs = ['Users', 'Tickers', 'Settings', 'Jobs', 'Cleanup'] as const;
+const tabs = ['Users', 'Tickers', 'Settings', 'Jobs', 'Alerts', 'Cleanup'] as const;
 type Tab = (typeof tabs)[number];
 
 export default function AdminPage() {
@@ -49,6 +50,11 @@ export default function AdminPage() {
             <PipelineReadinessPanel />
           </div>
         )}
+        {activeTab === 'Alerts' && (
+          <div className="space-y-4">
+            <SystemEventsPanel />
+          </div>
+        )}
         {activeTab === 'Cleanup' && <DataCleanup />}
       </div>
     </div>

frontend/src/pages/TickerDetailPage.tsx

@@ -171,8 +171,10 @@ export default function TickerDetailPage() {
   const dataStatus: DataStatusItem[] = useMemo(() => [
     {
       label: 'OHLCV',
+      // Market age of the latest bar (session date), not DB insert time —
+      // created_at stays frozen when the provider returns no new sessions.
       available: !!ohlcv.data && ohlcv.data.length > 0,
-      timestamp: ohlcv.data?.[ohlcv.data.length - 1]?.created_at,
+      timestamp: ohlcv.data?.[ohlcv.data.length - 1]?.date,
       selector: ['ohlcv'] as FetchSelector,
       paid: true,
     },

tests/unit/test_ingestion_service.py

@@ -60,3 +60,30 @@ async def test_empty_fetch_with_existing_history_is_up_to_date(session):
 
     assert result.status == "complete"
     assert result.records_ingested == 0
+
+
+async def test_empty_fetch_with_stale_history_reports_stale(session):
+    # Provider returns nothing but last stored bar is weeks old — classic
+    # rename/delist case (e.g. SATS after it became ECHO). Must not look like success.
+    await _add_ticker(session, "SATS")
+    today = date.today()
+    old = [
+        OHLCVData(
+            ticker="SATS",
+            date=today - timedelta(days=20 + i),
+            open=100.0,
+            high=101.0,
+            low=99.0,
+            close=100.0,
+            volume=1000,
+        )
+        for i in range(3)
+    ]
+    await svc.fetch_and_ingest(session, MockMarketDataProvider(ohlcv_data=old), "SATS")
+
+    result = await svc.fetch_and_ingest(session, MockMarketDataProvider(ohlcv_data=[]), "SATS")
+
+    assert result.status == "stale"
+    assert result.records_ingested == 0
+    assert result.last_date is not None
+    assert "renamed" in (result.message or "").lower() or "halted" in (result.message or "").lower()

tests/unit/test_system_event_service.py

@@ -0,0 +1,85 @@
+"""System event log: persist, dedup, summary, acknowledge."""
+
+from __future__ import annotations
+
+import pytest
+
+from app.services import system_event_service as svc
+from tests.conftest import _test_session_factory  # type: ignore
+
+
+@pytest.fixture
+async def session():
+    async with _test_session_factory() as s:
+        yield s
+
+
+async def test_log_and_list(session):
+    row = await svc.log_event(
+        session,
+        severity="warning",
+        source="ingestion",
+        code="ohlcv_stale",
+        message="No new bars since 2026-06-23",
+        symbol="SATS",
+        dedup_key="ohlcv_stale:SATS",
+    )
+    assert row is not None
+    assert row.severity == "warning"
+
+    events = await svc.list_events(session, days=7)
+    assert len(events) == 1
+    assert events[0].symbol == "SATS"
+
+
+async def test_dedup_suppresses_repeat(session):
+    first = await svc.log_event(
+        session,
+        severity="error",
+        source="data_collector",
+        code="job_error",
+        message="boom",
+        dedup_key="job:data_collector:error",
+    )
+    second = await svc.log_event(
+        session,
+        severity="error",
+        source="data_collector",
+        code="job_error",
+        message="boom again",
+        dedup_key="job:data_collector:error",
+    )
+    assert first is not None
+    assert second is None
+    events = await svc.list_events(session, days=7)
+    assert len(events) == 1
+
+
+async def test_summary_and_acknowledge(session):
+    await svc.log_event(
+        session,
+        severity="error",
+        source="job",
+        code="job_error",
+        message="fail",
+        dedup_key="a",
+    )
+    await svc.log_event(
+        session,
+        severity="warning",
+        source="job",
+        code="job_rate_limited",
+        message="slow",
+        dedup_key="b",
+    )
+    s = await svc.summary(session, days=7)
+    assert s["total"] == 2
+    assert s["unacknowledged"] == 2
+    assert s["unacknowledged_errors"] == 1
+    assert s["unacknowledged_warnings"] == 1
+
+    n = await svc.acknowledge_all(session, days=7)
+    assert n == 2
+    s2 = await svc.summary(session, days=7)
+    assert s2["unacknowledged"] == 0
+    assert s2["total"] == 2