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feat: Snapshots — 8 per preset save/recall

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Adds snapshot system to Helix Stadium:

Backend:
- Snapshot data model (8 slots per preset, captures block bypass
  + params + master volume)
- Snapshot API endpoints: list, save, recall, rename, delete
- Integrated into preset serialization/deserialization
- Tracks current_snapshot in state / WebSocket broadcasts

Frontend:
- Camera icon in header bar with current snapshot number
- SnapshotPanel as slide-up overlay
- 8 snapshot slots in a horizontal row
- Tap to recall filled snapshot, tap empty slot to save
- Press-and-hold (600ms) to save current state
- Inline name editing on tap
- Discard Edits toggle
- Green flash indicator on save
- Delete button for active snapshot
This commit is contained in:
Shawn
2026-06-12 19:20:56 -04:00
parent a1f35a56e3
commit b6dff3c0f3
7 changed files with 702 additions and 154 deletions
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src/web/ui-dist/index.html
+1 -1
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@@ -5,7 +5,7 @@
<link rel="icon" type="image/svg+xml" href="/ui/favicon.svg" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Pi Multi-FX Pedal</title>
<script type="module" crossorigin src="/ui/assets/index-BwPywO0-.js"></script>
<script type="module" crossorigin src="/ui/assets/index-DKZHEo9m.js"></script>
<link rel="stylesheet" crossorigin href="/ui/assets/index-CuJgR-s6.css">
</head>
<body>