Compare commits

..

2 Commits

Author SHA1 Message Date
gramps bc23b64315 refactor: extract BottomBar out of MainWindow.xaml — Phase 2, Commit 12
New Controls/ folder + namespace ytLive.Controls. BottomBar takes the
Grid.Row=3 footer: gear menu button (with its GearButton_Click handler moved to
the control's code-behind), centered stream-stats (bitrate/FPS/dropped/
duration/health), and the quality dropdown. All bindings inherit the window
DataContext; app-level styles resolve from Themes/Controls.xaml as before.

Zero behavior change; build 0 warnings; 246 pass, only the 2 known failures.
Docs: ViewModels/index.md tracker gains a Phase 2 section in the same commit.
2026-08-30 09:08:24 -07:00
gramps 14d3ed4924 docs: rewrite HANDOFF — Phase 1 (MainViewModel split) complete
Session-end state: all 11 partials landed, core 1,890 -> 758 lines. Refactor
commits 6-11 + tags are local-only pending a milestone push; Phase 2
(MainWindow.xaml -> UserControls) queued. Grep-verified per-partial using lists
recorded so no future session re-derives them.
2026-08-30 08:52:37 -07:00
6 changed files with 159 additions and 114 deletions
+64
View File
@@ -0,0 +1,64 @@
<UserControl x:Class="ytLive.Controls.BottomBar"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Border Background="#0f3460" Padding="16,4">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<!-- Gear icon: far left -->
<Button Grid.Column="0" ToolTip="Menu" Style="{StaticResource IconButton}"
VerticalAlignment="Center" Click="GearButton_Click">
<Button.ContextMenu>
<ContextMenu DataContext="{Binding PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}">
<MenuItem Header="App Settings" Command="{Binding OpenSettingsCommand}"/>
<Separator/>
<MenuItem Header="Report Bug" Command="{Binding OpenBugCommand}"/>
<MenuItem Header="Feature Request" Command="{Binding OpenFeatureCommand}"/>
<MenuItem Header="About" Command="{Binding OpenAboutCommand}"/>
</ContextMenu>
</Button.ContextMenu>
<Path Data="M19.14,12.94c0.04,-0.3 0.06,-0.61 0.06,-0.94c0,-0.32 -0.02,-0.64 -0.07,-0.94l2.03,-1.58c0.18,-0.14 0.23,-0.41 0.12,-0.61l-1.92,-3.32c-0.12,-0.22 -0.37,-0.29 -0.59,-0.22l-2.39,0.96c-0.5,-0.38 -1.03,-0.7 -1.62,-0.94L14.4,2.81c-0.04,-0.24 -0.24,-0.41 -0.48,-0.41h-3.84c-0.24,0 -0.43,0.17 -0.47,0.41L9.25,5.35C8.66,5.59 8.12,5.92 7.63,6.29L5.24,5.33c-0.22,-0.08 -0.47,0 -0.59,0.22L2.74,8.87C2.62,9.08 2.66,9.34 2.86,9.48l2.03,1.58C4.84,11.36 4.8,11.69 4.8,12s0.02,0.64 0.07,0.94l-2.03,1.58c-0.18,0.14 -0.23,0.41 -0.12,0.61l1.92,3.32c0.12,0.22 0.37,0.29 0.59,0.22l2.39,-0.96c0.5,0.38 1.03,0.7 1.62,0.94l0.36,2.54c0.05,0.24 0.24,0.41 0.48,0.41h3.84c0.24,0 0.44,-0.17 0.47,-0.41l0.36,-2.54c0.59,-0.24 1.13,-0.56 1.62,-0.94l2.39,0.96c0.22,0.08 0.47,0 0.59,-0.22l1.92,-3.32c0.12,-0.22 0.07,-0.47 -0.12,-0.61L19.14,12.94zM12,15.6c-1.98,0 -3.6,-1.62 -3.6,-3.6s1.62,-3.6 3.6,-3.6s3.6,1.62 3.6,3.6S13.98,15.6 12,15.6z"
Fill="#d0d0d0" Width="16" Height="16" Stretch="Uniform"/>
</Button>
<!-- Stream stats: centered under the preview pane -->
<StackPanel Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
<TextBlock Text="Bitrate:" Style="{StaticResource YtLabel}" Margin="0,0,4,0"/>
<TextBlock Style="{StaticResource YtLabel}"
Foreground="White" Margin="0,0,20,0">
<Run Text="{Binding CurrentHealth.CurrentBitrate, Mode=OneWay}"/>
<Run Text=" Mbps"/>
</TextBlock>
<TextBlock Text="FPS:" Style="{StaticResource YtLabel}" Margin="0,0,4,0"/>
<TextBlock Style="{StaticResource YtLabel}"
Foreground="White" Margin="0,0,24,0">
<Run Text="{Binding CurrentHealth.FPS, Mode=OneWay, StringFormat={}{0:0}}"/>
</TextBlock>
<TextBlock Text="Dropped:" Style="{StaticResource YtLabel}" Margin="0,0,4,0"/>
<TextBlock Text="{Binding CurrentHealth.DroppedFrames}" Style="{StaticResource YtLabel}"
Foreground="White" Margin="0,0,20,0"/>
<TextBlock Text="Duration:" Style="{StaticResource YtLabel}" Margin="0,0,4,0"/>
<TextBlock Text="{Binding CurrentHealth.StreamDuration}" Style="{StaticResource YtLabel}"
Foreground="White"/>
<TextBlock Text="{Binding CurrentHealth.HealthMessage}" Style="{StaticResource YtLabel}"
Foreground="#e94560" Margin="20,0,0,0"/>
</StackPanel>
<!-- Resolution dropdown: far right -->
<ComboBox Grid.Column="2" Style="{StaticResource YtComboBox}" MinWidth="150"
ItemsSource="{Binding QualityOptions}"
SelectedItem="{Binding SelectedQuality}"
DisplayMemberPath="Label"
ToolTip="{Binding ResolutionHelp}"
IsEnabled="{Binding IsOffline}"/>
</Grid>
</Border>
</UserControl>
+22
View File
@@ -0,0 +1,22 @@
using System.Windows;
using System.Windows.Controls;
namespace ytLive.Controls;
public partial class BottomBar : UserControl
{
public BottomBar()
{
InitializeComponent();
}
private void GearButton_Click(object sender, RoutedEventArgs e)
{
if (sender is Button { ContextMenu: { } menu } button)
{
menu.PlacementTarget = button;
menu.Placement = System.Windows.Controls.Primitives.PlacementMode.Bottom;
menu.IsOpen = true;
}
}
}
+67 -42
View File
@@ -2,62 +2,87 @@
## Branch / Commit State
**`main`**, working tree is **CLEAN** — all changes committed and pushed.
**`main`**, working tree is **CLEAN**.
No feature branches pre-1.0: all work lands on `main` per work unit.
Commits `46978b8` (AGENTS push policy), `fc33022` (HANDOFF), and refactor
commits `0–5` through `e286719` are **pushed** (incl. `refactor-commit-0..5`).
Refactor commits **6–11 are LOCAL ONLY** (policy 2026-08-30: no per-commit
push; `git push --tags` only at a user-agreed milestone / "push it"):
**Latest commit:** `e286719` — Commit 5/12 of the MainViewModel refactor (Webcam partial, tag `refactor-commit-5`).
| Commit | Hash | Tag | Partial | Lines |
|--------|------|-----|---------|-------|
| 6 Audio | `c1126a5` | `refactor-commit-6` | `MainViewModel.Audio.cs` | 408 |
| 7 Trax | `535a501` | `refactor-commit-7` | `MainViewModel.Trax.cs` | 132 |
| 8 Socials | `c41ff7f` | `refactor-commit-8` | `MainViewModel.Socials.cs` | 161 |
| 9 Streaming | `e1006a0` | `refactor-commit-9` | `MainViewModel.Streaming.cs` | 787 |
| 10 Chat | `3b77a13` | `refactor-commit-10` | `MainViewModel.Chat.cs` | 194 |
| 11 Overlays | `1efde5a` | `refactor-commit-11` | `MainViewModel.Overlays.cs` | 194 |
Nightly summary: **Phase 1 complete.** The plan was 11 partials + scaffold;
all live in `ViewModels/`. Core `MainViewModel.cs` shrank 1,890 → **758
lines**. Every change: clean build (0 warnings), `scripts/verify.sh` (246
passed + 2 known failures only), `scripts/scope-check.sh` with explicit file
args, `ViewModels/index.md` updated in the SAME commit, tagged
`refactor-commit-N`, no per-commit push.
## What's In Flight
**MainViewModel partial split (Phase 1):** 5 of 12 refactor commits landed and pushed.
Tags `refactor-commit-0…5` = scaffold, Account, License, Scenes, Background, Webcam.
Latest head `e286719`. Working tree clean.
Nothing code-in-flight — working tree clean, Phase 1 done.
Remaining partials in order: `Audio` (Commit 6), `Trax` (7), `Socials` (8), `Streaming` (9),
`Chat` (10), `Overlays` (11). Each lands the same way: cut → build 0 warnings →
`./scripts/verify.sh` + `./scripts/scope-check.sh "file1" …` → commit titled
`refactor: split <Area> out of MainViewModel — Commit N/12 (tag refactor-commit-N)`
with the `ViewModels/index.md` progress update in the SAME commit → `git tag refactor-commit-N`.
**Do NOT push per commit (policy 2026-08-30):** commits land locally; `git push` only at
a user-agreed sub-milestone/milestone ("push it"). Tags ride along on that push.
**Next (queued, not started): Phase 2 — split `MainWindow.xaml` (1,681 lines)
into UserControls.** Same rules: one work unit per control, docs in the same
commit, verify + scope-check, commit locally, `git push` only on user go.
Known partial-usings list (grep-verified):
`Scenes` = ObjectModel+Specialized+ComponentModel+`ytLive`+Models+Services;
`Background` = ObjectModel+IO+Windows+Input+Media+Media.Imaging+Helpers+Models+Services;
`Webcam` = Windows+Input+Media.Imaging+`ytLive`+Models+Services.
`INotificationService.Info/Warning/Error/Success` are default interface methods → any
partial calling `_notifications.X` needs `using ytLive.Services;`.
**Push pending:** refactor commits 6–11 + their tags are local. The Session-1
push checkpoint was never reached because the user directive was to run the
series to completion; Phase 1 completion is the natural milestone to push on
explicit user confirmation.
## Landmines
- **TextBox.Mode=OneWay** is required for `RecordFolderDisplay` binding (get-only computed property).
- **Pre-existing test failures (do not chase):** `AudioPipelineTests.Mix_HonorsProviderGains…` +
`RoundClipInteractionTests.Round_Clip_Corner_Is_Grabbable…`.
- **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.
- **Test suite hangs** when running full vstest (WPF `RealAppHost` dispatcher deadlock); individual
tests pass in isolation. Use `dotnet test` on individual test classes, not the full suite DLL.
- **Pre-commit gate:** `./scripts/verify.sh` — clean build (0 warnings) + full tests + scope check.
- **Implicit usings are SDK-default but partials must still carry their own
domain usings** (they do not inherit core's): `ICommand`/`ObservableCollection`/
`WriteableBitmap`/`DispatcherTimer` etc. are NOT implicit. Grep-verified usings:
- Audio: Input, Media, Threading, `NAudio.CoreAudioApi`, `ytLive`, Helpers, Models, Services, Services.Audio
- Trax: IO, Media, `Microsoft.Win32`, Helpers, Models, Services.Audio
- Socials: Windows, Input, Media, `ytLive`, Helpers, Models, Services, Services.Compositor
- Streaming: ObjectModel, IO, Windows, Input, Threading, `Microsoft.Win32`, Helpers, Models, Services, Services.Encoder
- Chat: ObjectModel, Media, Media.Imaging, Threading, Helpers, Models, Services
- Overlays: Diagnostics, IO, Input, Helpers
- **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
- TASK 3 (Capture Pipeline): 27/30 items done. Open: preview compositor (16), text source (17), alerts (20). Window capture absorbed into Screen picker (done). Background removal excluded from this build.
- TASK 4 (RTMP Ingest): ✅ Shipped — all 7 items done (compositor, FFmpeg locator, encoder+RTMP, WASAPI audio, frame-pipeline, health stats, one-click go-live).
- TASK 9 (Stream Management): items 1–3 shipped (reusable stream, health monitoring). Items 4–7 open: live chat, error handling, visibility picker, full broadcast form.
- TASK 10 (Monetization): steps 1–7 shipped. Velopack auto-update pending.
- TASK 18: shipped. Remaining = running-app verification (creator).
- TASK 19/23 (Control Surface UX): ✅ Shipped — thumbnails, transitions (Cut/Fade/Move), edit mode, left panel two-state.
- TASK 20 (Hotkeys): ✅ Shipped — F1-F5 scenes, F6-F9 actions, config UI, global hotkeys, conflict detection, persistence.
- TASK 21 (Media source): Increment A shipped (model + persistence). Slices 4–12 open (decoder, FramePump wiring, compositor, loop/volume, UI, tests). Blocked on ffmpeg for integration test.
- TASK 22 (Audio sync offset): not started — required for v1.
- TASK 30: gear cleanup + record location + single Start + preview layout restructure — shipped across commits `6031a56` + `61b850f` + `455a409`.
- Monetization: deferred (creator rethinking price/subscription model).
- **File refactor (in progress — Commit 5/12 done):** MainViewModel.cs (3,900 lines) split into functional partials (Scenes, Background, Webcam ✔; Audio, Trax, Socials, Streaming, Chat, Overlays pending; Account, License ✔). One commit per partial, each a roll-back point (`refactor-commit-N` tags), `verify.sh` + `scope-check.sh` before each, docs in the same commit. MainWindow.xaml (1,681 lines) will be split into UserControls after Phase 1. Zero behavior change, tests stay green.
- Monitoring: partials must re-declare their own `using`s — core file's usings do NOT carry across partial files. Field-initializer order across parts is compiler-ordered but no moved field has interdependent initializers.
- MainViewModel refactor: **Phase 1 complete (11/11 partials + scaffold).**
`ViewModels/index.md` has a per-partial table row (code↔commit map in the
tracker section). Core row now describes only what remains (ctor wiring,
lifecycle, source commands, WebView2 hosting, frame-pump seam,
`SelectedElement`, `BrandFlash*`, `BuildCompositorOptions`/`ResolveOutputFrame`).
- 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.
- Monitoring: cross-partial private access is the point of partial classes —
no moved member re-declared anywhere; moved setters reference other partials
purely by name.
## Session summary (2026-08-30)
- Completed refactor Commits 3/12 (Scenes, `dcdfcb9`), 4/12 (Background, `db068ab`), 5/12 (Webcam, `e286719`) — each tagged `refactor-commit-N`, pushed with `--tags`, verified (0-warning clean build, only the 2 known test failures).
- Background partial took the full bucket: background model, screen capture machinery, display picker, preview fns, capture commands. Webcam partial took identity + per-scene configs + capture callbacks + size safeguards.
- Mea culpa: asked the user a bucket-boundary question that the rules already answered — won't repeat; buckets are fixed.
- Test-suite note: full `vstest` run aborted early once (236/237) with only the 2 known failures — accepted by `verify.sh` as a known flake.
- Ran the MainViewModel split to completion under the standing directive
("continue until you can continue no longer" — no interruption prompts).
- Commits 9 (Streaming), 10 (Chat), 11 (Overlays) landed locally, each ~8:40
back-to-back: cut → 0-warning build → verify (246 pass + 2 known) →
scope-check → index.md in-commit → `git tag refactor-commit-N`. No push.
- Streaming was the hardest cut (interleaved props, master-frame consts,
session timer, health pipeline, record rename-on-stop); Chat and Overlays
were clean contiguous cuts. One build fix each: Streaming needed
`ObjectModel`/`Input`, Chat needed `Media.Imaging` for `WriteableBitmap`.
- Docs kept honest throughout: `index.md` rows for Streaming/Chat/Overlays,
About-hub row re-pointed to the Overlays partial, core row trimmed each time.
+2 -61
View File
@@ -6,6 +6,7 @@
xmlns:vm="clr-namespace:ytLive.ViewModels"
xmlns:models="clr-namespace:ytLive.Models"
xmlns:Helpers="clr-namespace:ytLive.Helpers"
xmlns:controls="clr-namespace:ytLive.Controls"
xmlns:notifications="clr-namespace:Notification.Wpf.Controls;assembly=Notification.Wpf"
mc:Ignorable="d"
Title="{Binding WindowTitle}" Height="1040" Width="1920"
@@ -1437,68 +1438,8 @@
</Border>
</Grid>
<!-- ═══ BOTTOM BAR: Stream stats + controls ═══ -->
<Border Grid.Row="3" Background="#0f3460" Padding="16,4">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<!-- Gear icon: far left -->
<Button Grid.Column="0" ToolTip="Menu" Style="{StaticResource IconButton}"
VerticalAlignment="Center" Click="GearButton_Click">
<Button.ContextMenu>
<ContextMenu DataContext="{Binding PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}">
<MenuItem Header="App Settings" Command="{Binding OpenSettingsCommand}"/>
<Separator/>
<MenuItem Header="Report Bug" Command="{Binding OpenBugCommand}"/>
<MenuItem Header="Feature Request" Command="{Binding OpenFeatureCommand}"/>
<MenuItem Header="About" Command="{Binding OpenAboutCommand}"/>
</ContextMenu>
</Button.ContextMenu>
<Path Data="M19.14,12.94c0.04,-0.3 0.06,-0.61 0.06,-0.94c0,-0.32 -0.02,-0.64 -0.07,-0.94l2.03,-1.58c0.18,-0.14 0.23,-0.41 0.12,-0.61l-1.92,-3.32c-0.12,-0.22 -0.37,-0.29 -0.59,-0.22l-2.39,0.96c-0.5,-0.38 -1.03,-0.7 -1.62,-0.94L14.4,2.81c-0.04,-0.24 -0.24,-0.41 -0.48,-0.41h-3.84c-0.24,0 -0.43,0.17 -0.47,0.41L9.25,5.35C8.66,5.59 8.12,5.92 7.63,6.29L5.24,5.33c-0.22,-0.08 -0.47,0 -0.59,0.22L2.74,8.87C2.62,9.08 2.66,9.34 2.86,9.48l2.03,1.58C4.84,11.36 4.8,11.69 4.8,12s0.02,0.64 0.07,0.94l-2.03,1.58c-0.18,0.14 -0.23,0.41 -0.12,0.61l1.92,3.32c0.12,0.22 0.37,0.29 0.59,0.22l2.39,-0.96c0.5,0.38 1.03,0.7 1.62,0.94l0.36,2.54c0.05,0.24 0.24,0.41 0.48,0.41h3.84c0.24,0 0.44,-0.17 0.47,-0.41l0.36,-2.54c0.59,-0.24 1.13,-0.56 1.62,-0.94l2.39,0.96c0.22,0.08 0.47,0 0.59,-0.22l1.92,-3.32c0.12,-0.22 0.07,-0.47 -0.12,-0.61L19.14,12.94zM12,15.6c-1.98,0 -3.6,-1.62 -3.6,-3.6s1.62,-3.6 3.6,-3.6s3.6,1.62 3.6,3.6S13.98,15.6 12,15.6z"
Fill="#d0d0d0" Width="16" Height="16" Stretch="Uniform"/>
</Button>
<!-- Stream stats: centered under the preview pane -->
<StackPanel Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
<TextBlock Text="Bitrate:" Style="{StaticResource YtLabel}" Margin="0,0,4,0"/>
<TextBlock Style="{StaticResource YtLabel}"
Foreground="White" Margin="0,0,20,0">
<Run Text="{Binding CurrentHealth.CurrentBitrate, Mode=OneWay}"/>
<Run Text=" Mbps"/>
</TextBlock>
<TextBlock Text="FPS:" Style="{StaticResource YtLabel}" Margin="0,0,4,0"/>
<TextBlock Style="{StaticResource YtLabel}"
Foreground="White" Margin="0,0,24,0">
<Run Text="{Binding CurrentHealth.FPS, Mode=OneWay, StringFormat={}{0:0}}"/>
</TextBlock>
<TextBlock Text="Dropped:" Style="{StaticResource YtLabel}" Margin="0,0,4,0"/>
<TextBlock Text="{Binding CurrentHealth.DroppedFrames}" Style="{StaticResource YtLabel}"
Foreground="White" Margin="0,0,20,0"/>
<TextBlock Text="Duration:" Style="{StaticResource YtLabel}" Margin="0,0,4,0"/>
<TextBlock Text="{Binding CurrentHealth.StreamDuration}" Style="{StaticResource YtLabel}"
Foreground="White"/>
<TextBlock Text="{Binding CurrentHealth.HealthMessage}" Style="{StaticResource YtLabel}"
Foreground="#e94560" Margin="20,0,0,0"/>
</StackPanel>
<!-- Resolution dropdown: far right -->
<ComboBox Grid.Column="2" Style="{StaticResource YtComboBox}" MinWidth="150"
ItemsSource="{Binding QualityOptions}"
SelectedItem="{Binding SelectedQuality}"
DisplayMemberPath="Label"
ToolTip="{Binding ResolutionHelp}"
IsEnabled="{Binding IsOffline}"/>
</Grid>
</Border>
<controls:BottomBar Grid.Row="3"/>
<!-- ═══ OVERLAY: Settings / Bug / Feature / About ═══ -->
<Grid Grid.RowSpan="3"
Visibility="{Binding IsAnyOverlayOpen, Converter={StaticResource BoolToVis}}">
-10
View File
@@ -291,16 +291,6 @@ public partial class MainWindow : Window
e.Handled = true; // the button's right-click context menu must not fire
}
private void GearButton_Click(object sender, RoutedEventArgs e)
{
if (sender is Button { ContextMenu: { } menu } button)
{
menu.PlacementTarget = button;
menu.Placement = System.Windows.Controls.Primitives.PlacementMode.Bottom;
menu.IsOpen = true;
}
}
private void BackToAbout_Click(object sender, RoutedEventArgs e)
{
if (DataContext is ViewModels.MainViewModel vm)
+4 -1
View File
@@ -51,7 +51,10 @@ Progress (Commit N/12 · tag):
- [x] **Commit 9/12 · `refactor-commit-9`** — **Streaming** → `MainViewModel.Streaming.cs`
- [x] **Commit 10/12 · `refactor-commit-10`** — **Chat** → `MainViewModel.Chat.cs`
- [x] **Commit 11/12 · `refactor-commit-11`** — **Overlays** → `MainViewModel.Overlays.cs`
- [x] **Phase 1 complete:** core `MainViewModel.cs` split into 10 functional partials (1,890 → 758 lines). Phase 2 (splitting `MainWindow.xaml` into UserControls) not yet started.
- [x] **Phase 1 complete:** core `MainViewModel.cs` split into 10 functional partials (1,890 → 758 lines).
**Phase 2 — `MainWindow.xaml` split into UserControls** (new `Controls/` folder, namespace `ytLive.Controls`):
- [x] **Commit 12 · `refactor-commit-12`** — **BottomBar** → `Controls/BottomBar.xaml(.cs)` (gear menu + stream stats + quality dropdown; `GearButton_Click` moved to the control's code-behind). Pending: TopBar, health banner, left scene/chat panel, preview pane, overlay host.
The partial `.cs` files land next to `MainViewModel.cs` in this folder as the split
proceeds; each partial carries its own `using`s and re-declares nothing from core.