# HANDOFF — Session State

## Branch / Commit State

**`main`**, working tree is **CLEAN**.

Both split phases are now complete. Phase 1 (view-model partials) is pushed;
Phase 2 (MainWindow.xaml → UserControls) is complete but **local-only**.

**Pushed** (reached `origin/main` == `14d3ed4`, incl. tags): Phase 1 commit `0`
and refactor commits `1..11` (`refactor-commit-0..11`), plus policy/HANDOFF.

**LOCAL ONLY (Phase 2 — 12, 13, 14, 15, 16, 17, 18)** — policy 2026-08-30: no
per-commit push; `git push` only at a user-agreed milestone / "push it".
**Push pending on explicit user approval:**

| Commit | Hash | Tag | Control | From Loc |
|--------|------|-----|---------|----------|
| 12 | `bc23b64` | `refactor-commit-12` | `Controls/BottomBar` | footer |
| 13 | `6914252` | `refactor-commit-13` | `Controls/HealthBanner` | row 1 banner |
| 14 | `90f5ad5` | `refactor-commit-14` | `Controls/TopBar` | row 0 top bar |
| 15 | `c5e3466` | `refactor-commit-15` | `Controls/PreviewPane` | center preview |
| 16 | `73397cf` | `refactor-commit-16` | `Controls/SceneThumbnailStrip` | row 0 strip |
| 17 | `c9fd1bd` | `refactor-commit-17` | `Controls/LeftPanel` | row 1 col 0 |
| 18 | `544208e` | `refactor-commit-18` | `Controls/OverlayHost` | overlay dialogs |

## What's In Flight

Nothing code-in-flight — working tree clean, **Phase 2 complete**.

**Phase 2 result:** `MainWindow.xaml` carved 1,681 → **123 lines** (a shell over
6 UserControls under `Controls/`, namespace `ytLive.Controls`). Every change:
0-warning build, `scripts/verify.sh` (246 pass + 2 known only), explicit-file
`scripts/scope-check.sh`, `ViewModels/index.md` in the SAME commit, tagged
`refactor-commit-N`, no per-commit push.

**Next:** 
- If user says "push": `git push origin main && git push --tags` (7 commits 12-18
  + their tags).
- Then optional Phase 3 if queued. Nothing is queued beyond Phase 2.

**Pending bus:** `ViewModels/index.md` Phase 2 tracker has rows 12–18 (closed);
Phase 1 tracker closed. `Controls/` has `index.md`-style facts only if needed.

## Landmines

- **Pre-existing test failures (do not chase):**
  `AudioPipelineTests.Mix_HonorsProviderGains_AndGameMute_KillsTheLoopback` +
  `RoundClipInteractionTests.Round_Clip_Corner_Is_Grabbable_And_Shape_Is_Circle`.
- **Tests occasionally abort early (236/237)** — known flake, accepted by `verify.sh`.
- **App running locks `ytLive.exe`** → build fails MSB3027. Kill PID before building.
- **WinForm crash from `Window_PreviewMouseLeftButtonDown`** — handled in-side the
  preview/left panel; don't add handlers that deref `OriginalSource` unguarded.
- **Controls cannot see `Window.Resources`** (converter rule, Commit 13): any
  StaticResource the window once supplied must live at app level in
  `Themes/Controls.xaml`. The 7 converters were promoted there.
- **Some control XAML needs its own `xmlns:models` / `xmlns:Helpers`** — a moved
  block lost its namespace when it left MainWindow's root (LeftPanel hit this,
  MC2000 "key null"). Always add the model/helper xmlns on each control root.
- **Name-looked-up host stubs must stay in the window:** `WebViewHostPanel`
  (ctor `InitWebView2(WebViewHostPanel)`) and `ToastArea`
  (`NotificationService.InArea("ToastArea")`) are resolved by name from the
  window — keep them as window-root children, don't bury them in a control.
  OverlayHost deliberately left them in place (Commit 18) for this reason.
- **Pre-commit gate:** `scripts/verify.sh` (0-warning build + full tests) and
  `scripts/scope-check.sh "file1" …` — scope-check REQUIRES explicit file args.
- Build from WSL with the Windows dotnet host only (see `AGENTS.md`).

## Todo state

- MainViewModel refactor: **Phase 1 complete (11/11 partials)**, pushed.
- MainWindow.xaml refactor: **Phase 2 complete (6/6 controls)**, local-only.
- TASK 3: 27/30 (preview compositor 16, text source 17, alerts 20 still open).
- TASK 4: ✅ shipped. TASK 9: items 1–3 shipped; 4–7 open. TASK 10: steps 1–7; Velopack pending.
- TASK 18: shipped, creator verification pending. TASK 19/23, 20, 21-A: shipped.
- TASK 22 (audio sync offset): not started — required for v1.

## Session summary (2026-08-30)

- Ran the **MainWindow.xaml split to completion** under the standing "continue
  without stopping" directive — no interruption prompts, no `question` tool.
- Commits 12–18 landed locally, each: cut → 0-warning build → verify (246 pass +
  2 known) → scope-check → index.md in-commit → `git tag refactor-commit-N`. No push.
- **Commit 15 (PreviewPane** the hardest: 1920×1080 canvas + drag/select/resize/
  hit-test, webcam menu handlers, social glow, audio meters. A dropped outer
  `Border` (background/glow/margin) was caught and restored same-commit.
- **Commit 17 (LeftPanel)** the biggest: property editors + chat autoscroll
  (moved to self-subscribe on `Loaded`), drag-to-reorder, snapshot revert/accept
  family; window routes via `_leftPanel.IsClickInside` and
  `_leftPanel.OnSelectionChanged(vm)`.
- **Commit 18 (OverlayHost)** the scope-decision: moved only the three dialogs;
  kept `WebViewHostPanel` + `ToastArea` as window-root stubs because their
  name-based lookups (WebView2 init, toast `InArea`) would break if buried in a
  control — a spin-guard decision, not a guess.
- Two XAML extraction gotchas recorded: (a) a moved block losing its `xmlns`
  → MC2000 "key null" (Line n col m), fixed by adding `xmlns:models` on the
  control root; (b) re-deriving line numbers after each edit before `sed`/awk
  deletion ranges (the edit tool shifts numbers).
- Push checkpoint reached; awaiting explicit "push" for commits 12–18 + tags.