bglga/TODO/GAL-53.md
Harald Hoyer 365e3a7cc4 chore(todo): add acceptance criteria and test hints to open issues
Flesh out the 14 still-open issues (GAL-34/35/36/37, 40/41, 43, 46/47/48/49,
52/53/55) with explicit acceptance criteria and concrete integration test
hints that reference existing types and headless tooling, so future work
on these tickets has a clear definition of done.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-07 09:53:09 +02:00

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Markdown

---
id: GAL-53
title: Implement a High Score system (saving/loading)
status: Todo
parent: GAL-50
labels: [polish, ui]
---
# GAL-53: Implement a High Score system (saving/loading)
Implement a High Score system (saving/loading).
## Acceptance criteria
- [ ] High score persists to disk under a platform-appropriate path (e.g. `dirs::data_dir()/bglga/highscore.json`).
- [ ] Loaded on startup into a `HighScore` resource; defaults to 0 if the file is absent or corrupt (no panic).
- [ ] Updated only when `Score > HighScore` on entering `GameOver`, then persisted.
- [ ] Visible on Start Menu (best so far) and Game Over (best vs current).
- [ ] Save path overridable via env var or test-only setter so tests don't pollute the user's real config.
## Integration test hints
- Use a tmp dir override; pre-write `{"high_score": 5000}`; build `App`; assert `HighScore` resource = 5000.
- Pre-write malformed JSON; assert loader falls back to 0 and doesn't panic.
- Run scenario: set `Score = 7000`; transition to `GameOver`; reload from disk; assert persisted value = 7000.
- Concurrency / crash safety: write via temp file + rename, not in-place truncate.