feat(CORE-001D3B): surface alert history degraded state

This commit is contained in:
Bu5hm4nn
2026-03-26 15:12:04 +01:00
parent 09e03f96a8
commit ff76e326b1
8 changed files with 138 additions and 15 deletions

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id: CORE-001D3B
title: Alert History Degraded State Handling
status: done
priority: P2
effort: S
depends_on:
- CORE-001D3A
tags:
- core
- alerts
- persistence
- ux
summary: Corrupt or unreadable alert-history storage now surfaces as an explicit degraded state instead of silently appearing as empty history.
completed_notes:
- Added `AlertHistoryLoadError` in `app/models/alerts.py` so corrupt or unreadable alert-history storage is an explicit failure mode.
- `AlertService.evaluate(...)` now logs history load failures and returns `history_unavailable` / `history_notice` metadata instead of silently treating corruption as an empty history list.
- `/overview` and `/{workspace_id}/settings` now render a visible degraded-history notice when alert history storage is unavailable.
- Added focused regression coverage in `tests/test_alerts.py` for corrupt-history load failures in both persisted and preview paths.
- Validated with focused pytest coverage, local Docker, and browser-driven checks on overview and settings with an intentionally corrupted `/app/data/alert_history.json`.