TASK 4 audio fixes round 2: dB-scaled meters, game bar moved into the preview, Notepad About button replaced by the logo → in-app About — AudioLevelMeter.ToDisplay maps -60..0 dBFS onto 0..1 (real speech/game RMS ~0.01..0.1 linear left the flat scale dead; both meters now scale through it before volume); the game audio bar moved OUT of the footer (back to two rows) and is now a bottom-center dark chip overlaid on the preview window — monitoring UI only, never on the live output; the top-bar About button (opened THIRD-PARTY-NOTICES.txt in the OS viewer) removed, the ytLlive wordmark now opens the in-app About overlay, and task 21 queued (real logo + creator-hub About with premium/coffee/socials links + in-app scrolling licensing panel) — 169 tests passing, 0 warnings

HANDOFF.md

@@ -7,28 +7,30 @@
 
 ## Session state (last updated: 2026-08-13)
 
-- **Branch:** `main`. The **game audio bar + mic status dot + always-on capture**
-  work is **uncommitted** (see list below). The last committed+pushed baseline is
-  `ea250c0` (social bar click-toggle).
-- **This session (audio UX follow-up):** per the creator's requests —
-  1. The MIC label is now a **button with a status dot** (`Models/MicStatus`:
-     green = capturing, yellow = requested mic problem, red = no device).
-  2. **Mic capture runs for the app's lifetime** (started at startup via
-     `StartMicCaptureAsync`, disposed in `Shutdown`; `BeginGoLive`/`StopStream`
-     no longer start/stop the mixer) so both meters preview live.
-  3. A **game audio bar** (desktop/game — meter + mute + volume, mirror of the
-     mic bar) sits centered beneath the preview and appears only while a
-     **full-screen game is producing sound** (decision: fullscreen + loopback
-     sound; **silence never hides an active bar** — the creator's final rule).
-     Show after ~500ms of fullscreen+sound, hide ~1s after leaving fullscreen.
-- **Uncommitted files:** `MainWindow.xaml`/`.cs`, `ViewModels/MainViewModel.cs`,
-  `Services/Audio/{IAudioSource,WasapiMicAudioSource,WasapiLoopbackAudioSource,AudioMixer}.cs`,
-  new `Models/MicStatus.cs`, new `Services/{IGameAudioDetector,GameAudioHysteresis,GameAudioDetector}.cs`,
-  `ytLive.Tests/AudioMixerTests.cs`, new `GameAudioHysteresisTests.cs` +
-  `GameAudioDetectorTests.cs`, memory docs (TASKS.md, ai.md, Services/index.md,
-  ViewModels/index.md, Models/index.md, HANDOFF).
-- **Verified:** build 0 warnings, 0 errors; **167 tests passing** (full suite,
-  after the final rebuild).
+- **Branch:** `main`. The **audio UX follow-up** (`9f9ed34`) is **committed and pushed**.
+- **This session (round 2 — the game audio bar + meter fixes):**
+  1. **Meter scaling:** the bars looked dead on a flat scale — real speech/game RMS is
+     ~0.01..0.1 linear, so the fill barely moved even at full volume. Added
+     `AudioLevelMeter.ToDisplay(float)`: maps −60..0 dBFS linearly onto 0..1. Both meters
+     (mic `MeterLevel`, game `GameMeterLevel`) now scale the raw level through it before
+     multiplying by volume. +2 unit tests.
+  2. **Game bar placement correction (user: it belongs in the preview, not the footer):**
+     moved the game audio bar OUT of the footer (footer back to two rows) and into the
+     **preview window** as a bottom-center dark chip overlaid on the live display
+     (`MainWindow.xaml`, in the `PreviewGrid` next to the OpacityChip). Monitoring UI
+     only — never rendered into the live output (the `SceneCompositor` is unaware of it).
+  3. **About button (user: stop jacking Notepad; standalone app):** the top-bar About
+     button that opened `THIRD-PARTY-NOTICES.txt` in the OS viewer is GONE (button +
+     `AboutButton_Click` removed). The **ytLlive wordmark (top-left) is now clickable**
+     and opens the existing in-app About overlay (`OpenAboutCommand`). Queued as task 21:
+     make a real logo + expand the About overlay into the creator's hub (premium / coffee
+     / socials links + a scrolling licensing/legal panel, all in-app).
+- **Uncommitted:** this round-2 work — `Services/Audio/AudioLevelMeter.cs`,
+  `ViewModels/MainViewModel.cs`, `MainWindow.xaml` (scaling + game bar + logo/About),
+  `MainWindow.xaml.cs` (AboutButton_Click + unused usings removed), `ytLive.Tests/AudioMixerTests.cs`
+  (2 new `ToDisplay` tests), memory docs (TASKS.md — incl. new task 21, ai.md,
+  Services/index.md, ViewModels/index.md, HANDOFF, THIRD-PARTY-NOTICES.txt).
+- **Verified:** build 0 warnings, 0 errors; **169 tests passing** (full suite).
 - **Landmines:**
   - Never set a local `Canvas.SetTop` on the social bar — a local value permanently
     overrides `{Binding SocialBarTop}` (the `ClearValue` lesson from 5.5).