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5a1993b6db
A webcam dragged between sources reverted to the bottom of the stack on every relaunch: Source and WebcamSceneConfig each carried independent per-type SortOrder counters, and Load appended all Sources before all configs. Save now stamps both tables' SortOrder from the element's index within scene.Elements; Load merges the two tables' rows by that shared z (sources-first tie-break preserves legacy rows). Cross-type reorder now survives a fresh LayoutStore reload. Task 37 queued: defaults vs current layout split (creator directive) — capture out-of-scope work in TASKS.md rather than folding it in.
48 lines
2.3 KiB
Markdown
48 lines
2.3 KiB
Markdown
# TASK 37 — Defaults vs current layout split
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**Status:** ☐ Queued (2026-09-20)
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## Idea (creator directive 2026-09-20)
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The app establishes a DB of static, branded layout objects as its defaults. Today the DB is BOTH the
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defaults and the live workspace: `LayoutStore.Save` deletes and reinserts the whole layout on every
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save, so "your last edit" and "the defaults" occupy the same rows. The recurring "reorder doesn't
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persist" bug was a symptom of that conflation.
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Store TWO data sets:
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- **`default`** — the established DB (branded factory scenes/layers), never mutated by user edits.
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- **`current`** — whatever the user currently has, stamped with the build-id.
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Load rule: honor `current` **iff** its build-id equals the running build's id (`BuildStamp.Id`),
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otherwise load `default`. Bonus: one-click "revert to defaults" = drop `current`.
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Two implementations were floated (config file vs second rows in the same DB); nothing decided — both
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are OPS acceptable to the creator. The proposed conceptual shape:
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```
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scene[0-4].layerList.[default | current].elementList
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```
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## Notes / facts established while investigating
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- `SceneCatalog` only defines the five canonical scene **names**; the actual default element set
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exists only as whatever the DB holds at first migration. There is no standalone in-code factory
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element set — "defaults" at migration time = a snapshot of today's DB.
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- SortOrder is a DB column only (not on models); `Source` and `WebcamSceneConfig` were stamped with
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independent per-type sort counters and load appended all sources before all configs. That
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cross-table order bug is ALREADY FIXED (2026-09-20, unified z-space, see commit) — TASK 37 is the
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defaults/current data split on top of it.
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- `MainViewModel.LoadLayout` (MainViewModel.cs:348) seeds `SceneCatalog.All` when `Scenes.Count == 0`
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and SaveLayoutNow deletes/reinserts everything (LayoutStore.Save.cs). Startup path:
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`%APPDATA%\ytLlive\ytLlive.db` (MainViewModel.cs:332), `LayoutPathOverride` test seam.
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## Acceptance
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- A saved `current` layout with a matching build-id restores on start.
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- A `current` stamped by a different (older/newer) build-id falls back to `default`.
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- Revert-to-default restores `default` for one scene or all.
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## Cross-references
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- `ai.md` — persistence architecture; `MyMistakes.md` — prior reorder persistence failures. |