# HANDOFF — 2026-10-09 (TASK 51 webcam background Remove + Blur — BUILT)

## Branch
- main (no feature branch). Pushed through `f8dd107`; everything after is local, **not pushed**
  (push at the creator's call).

## Dirty files (NOT mine — do NOT commit)
- The in-flight "pinned chat" work unit: `Models/YouTube.cs`, `ViewModels/MainViewModel.Chat.cs`,
  untracked `Helpers/RelayCommandGeneric.cs`, and **its hunks in `Controls/LeftPanel.xaml`**
  (lines ~599–610, the chat area). TASK 51 slice 5 edited the SAME file in a different region (the
  webcam properties, ~line 287); only the TASK 51 hunk was staged (`git apply --cached` of that hunk
  alone) — the pinned-chat hunks are still unstaged and untouched.
- The creator's untracked logo art in `Assets/` (`llamacasty text.*`, `llamacasty-text-nobg*.png`,
  `thin logo wordmark.png`).

## What just happened — TASK 51, all five slices
1. **Engine** — Google's MediaPipe Selfie Segmenter (landscape, Apache-2.0) converted to ONNX by
   `tools/selfie-seg/` and verified vs MediaPipe's own runtime; embedded resource; onnxruntime CPU.
2. **Blur** — background at ¼ res, 3 box passes, mask-blended; Remove gets edge feather.
3. **Config** — `WebcamSceneConfig.BackgroundEffect` + `BackgroundStrength`, persisted (additive cols).
4. **Hookup** — `CameraManager` renders per-scene effect **variants** (one segmentation per raw frame
   on a latest-frame-drop worker; raw path untouched); VM `SyncWebcamEffects()` declares/adopts them.
   Synthetic 720p Debug: segment 1.6 ms, Remove 3.3 ms, Blur 17.5 ms.
5. **UI** — Background section in the webcam's Layers properties: Remove / Blur `PillToggle`s,
   radio-exclusive, + Strength slider (visible while an effect is on).
Also this session: 64-bit requirement (`PlatformTarget=x64`), GPL-3.0-or-later licensing, README
rewrite, TASK 55 (disk hygiene) + TASK 56 (secret scan before going public) queued.

## Tests
- Full suite **412 passed / 0 failed**, 0 build warnings. New: `BackgroundEffectEngineTests` (Remove,
  Blur, bundled-model contract), `CameraManagerTests` (variant reaches compositor + preview, raw
  stays raw), `LayoutStorePersistenceTests` (per-scene roundtrip + legacy migration),
  `WebcamBackgroundPillTests` (radio semantics + XAML wiring).
- Known environment flakes (not regressions): `Mix_HonorsProviderGains…` (fails while system audio
  plays), `RealMouseDrag…` (needs an idle desktop).

## Known issues / follow-ups
- **Creator's real-camera check (TASK 51):** toggle Remove/Blur on a webcam, watch edges/lighting,
  and read `startup.log` → "background effects avg … ms/frame".
- `onnxruntime.dll` ~17 MB; TASK 48's MSIX publish must pin `-r win-x64` (x64-only already enforced).
- Still stale, not rewritten: ai.md "Windows packaging" (Store IAP / branding-flash paid delta) and
  "Monetization" sections; MARCOM.md asset table (`llama-logo.png` doesn't exist).
- TASK 56: secret-scan the full history BEFORE the Gitea repo (`gramps/LlamaCasty`) goes public.
- Carried: "Use default background" toggle still not working (from 2026-10-07).

## Also shipped after TASK 51 (2026-10-09)
- **Brand flash OFF by default** (`MainViewModel.ShowBrandFlash = false`; feature kept).
- **Audio loudness:** `SpeechLeveler` auto-gain in the voice chain + honest mic meter (no +10 dB boost).
  Creator's upload was −28.5 LUFS; the same audio through the new chain measures −17.9 LUFS.
- **Private broadcast close-out:** Enter keeps / Escape deletes (`KeepBroadcastDialog`,
  `videos.delete`). Untested against the real API — first real private stream is the check.

## Next step
- Creator runs the app: webcam → Layers properties → Background → Remove / Blur + Strength.