# Session 0016: Backup Drill-Down Redesign & Restore Fix

**Date:** 2026-02-22
**Status:** Completed
**Origin:** MDF Webseiten session 0030

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## Work Done

- [x] Fixed restore API call — `mdf` CLI was falling into interactive selection because no backup filename was passed
  - `app.js`: `startRestore()` now includes `&name=...` from `restoreCtx` in the API URL
- [x] Implemented backups drill-down redesign (deployed as v7)
  - Replaced flat filter state with 3-level drill state (project → env → backup file)
  - Added cached backups to avoid re-fetching on drill-back
  - Extracted `mergeBackups()` helper function
  - Implemented all 13 changes from the redesign plan
- [x] Fixed browser cache problem preventing new JS from loading after rebuild
  - Rebuilt image and restarted container to force cache bust

## Key Decisions / Learnings

- Restore API must include the backup filename explicitly — passing only project/env and letting the CLI choose interactively breaks in non-TTY server context.
- 3-level drill state (project → env → file) is the right UX pattern for hierarchical backup selection; flat filter state made navigation confusing and state management error-prone.
- Caching fetched backup lists at each level avoids latency on drill-back and reduces server load.
- Browser cache busting on vanilla JS apps requires either cache-control headers or a version query param — container restart alone does not always clear client caches.

## Files Changed

- `/opt/data/ops-dashboard/static/js/app.js` — `startRestore()` fix, 3-level drill state, `mergeBackups()` helper
- Docker image rebuilt and container restarted

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**Tags:** #Session #OpsDashboard #BackupSystem