TASK 4 ship step 6: health stats land in the bottom bar — FramePump.HealthUpdated is now wired to the VM (OnFramePumpHealthUpdated marshals onto the UI thread — the encoder's stderr loop raises on a background thread — and copies the parsed bitrate/FPS/dropped/duration into CurrentHealth, the bottom bar's existing binding); ResetHealth zeroes dropped frames + elapsed duration on go-live and on End so stats never linger from a previous session (bitrate/FPS stay on the tier's targets); the bar shows real encoder values once TASK 5 fills _rtmpUrlProvider (until then the pump skips the encoder) — 169 tests passing, 0 warnings

HANDOFF.md

@@ -7,36 +7,32 @@
 
 ## Session state (last updated: 2026-08-13)
 
-- **Branch:** `main`. The audio UX follow-up (`9f9ed34`) and round 2 (`18abe42`)
-  are **committed and pushed**.
-- **This session (round 3 — mic mute icon + REC sign):**
-  1. **Mic mute icon:** the mic bar gained a **microphone glyph** (same 16px style
-     as the speaker, white → red + slash when muted, `ToolTip=MicMuteText`)
-     **between the meter and the speaker** — both mutes adjacent with spacing
-     between the icons; click reuses the same `MicSpeaker_MouseLeftButtonUp`
-     handler → `ToggleMicMuteCommand`. No VM/code-behind change.
-  2. **REC sign (top center):** the old LIVE badge (hidden when offline) became an
-     **always-visible REC chip** — dark gray dot (#555) + dim "REC" (#888) offline,
-     **bright red (#e94560)** + "REC" + elapsed while live, **darker red (#8f1f1f)**
-     when live with a **private** stream. Driven by new VM props
-     `RecDotBrush`/`RecTextBrush`/`RecDotOpacity`/`IsLivePrivate` (notified from the
-     `StreamStatus` and `StreamVisibility` setters), privacy read off the **dialog's
-     chosen visibility** (`StreamVisibility == "Private"`) — the stream service still
-     hardcodes `privacyStatus = "public"`, so the private-REC state only lights once
-     that's honored (TASK 4 ship step 7). The dot pulses while live; `LiveIndicatorVisible`
-     and `LivePulseOpacity` were removed.
-  3. **Voice filters queued as task 22** — bass boost, treble, noise suppression,
-     compressor on the mic input channel, KISS, always on (before the meter/encoder mix).
+- **Branch:** `main`. The audio UX follow-up (`9f9ed34`), round 2 (`18abe42`),
+  and round 3 (`dc29adf`) are **committed and pushed**.
+- **This session (TASK 4 ship step 6 — health stats in the bottom bar):**
+  1. **Wiring:** `MainViewModel.OnFramePumpHealthUpdated` subscribes to
+     `FramePump.HealthUpdated` and marshals onto the UI thread (the encoder's
+     stderr loop raises on a background thread — same pattern as the audio
+     level handlers), copying the parsed bitrate/FPS/dropped/duration into
+     `CurrentHealth`, which the bottom bar's left stats group already binds
+     (bitrate/FPS/dropped/duration/health-message).
+  2. **Session hygiene:** `ResetHealth(status)` zeroes dropped frames + the
+     elapsed duration (and clears `LastError`) on go-live and on End so stats
+     never linger from a previous stream; bitrate/FPS stay on the tier's
+     targets from `ApplyStreamQuality`.
+  3. **Reality:** the bar lights up with REAL encoder values once TASK 5 fills
+     `_rtmpUrlProvider` with the reusable stream's ingest URL — until then the
+     pump skips the encoder (logged) and the bar shows the tier's targets.
+     No new tests needed: `FramePumpTests.HealthUpdated_ForwardsEncoderHealth`
+     already covers the pump→event seam; the VM handler is a thin marshal+copy.
 - **Mic status contract (creator's rule, verified — do NOT "fix"):** the status dot is
   **red until a mic resource is actually connected**. `MicStatus` starts `NotConnected`
   (red); it goes green ONLY when the mixer's `MicConnected` fires, which comes strictly
   from the mic source's `Started` event raised after `StartRecording()` succeeds. Zero
   devices at startup → stays red and the mixer is never started; capture failure → yellow.
   Green must never be raised earlier (e.g. on loopback start or on `Start()` being called).
-- **Uncommitted:** this round-3 work — `ViewModels/MainViewModel.cs` (REC props,
-  `_recDotPulse`, StreamVisibility/StreamStatus notifications, `LiveIndicatorVisible`/
-  `LivePulseOpacity` removed), `MainWindow.xaml` (REC chip + mic mute icon),
-  `TASKS.md` (task 22 + round-3 audio note), `ai.md`, `ViewModels/index.md`, `HANDOFF`.
+- **Uncommitted:** this session — `ViewModels/MainViewModel.cs` (health wiring +
+  `ResetHealth`), `TASKS.md` (ship step 6 ✅), `ai.md`, `ViewModels/index.md`, `HANDOFF`.
 - **Verified:** pending (build + full test run right before commit).
 - **Landmines:**
   - Never set a local `Canvas.SetTop` on the social bar — a local value permanently
@@ -64,12 +60,13 @@
     integration test (a real `MainWindow`), which never goes live — keep it that way.
   - Sandbox can't reach outbound HTTPS — `HttpSocialValidator` stub-handler tests
     only, never the real instance.
-- **Next step:** commit + push round 3 (one commit). Then TASK 4 ship step 6 — health
-  stats: bind `FramePump.HealthUpdated` (bitrate/FPS/duration) into the bottom bar.
-  Also queued: task 21 (logo + About hub), task 22 (voice filters). Nothing else
-  queued — do not expand the task queue on your own. Optional, not queued:
-  rewriting the healed entry's `ProfileUrl` to
-  `https://mastodon.llamachile.tube/@gramps` (user must say the word).
+- **Next step:** commit + push this ship-step-6 work (one commit). Then the remaining
+  TASK 4 requirement is **ship step 7 — one-click go live + private-only enforcement**
+  (honor the dialog's chosen visibility / enforce `privacyStatus = "private"`; also
+  fixes the REC sign's private state — see round-3 note above). Also queued: task 21
+  (logo + About hub), task 22 (voice filters). Nothing else queued — do not expand
+  the task queue on your own. Optional, not queued: rewriting the healed entry's
+  `ProfileUrl` to `https://mastodon.llamachile.tube/@gramps` (user must say the word).
 
 - **Secret/DB/port facts live:** OAuth client id/secret in `Helpers/OAuthCredentials.cs`;
   OAuth session token in `Helpers/TokenStore.cs` (DPAPI → `%APPDATA%\ytLlive\ytLlive.auth`);

TASKS.md

@@ -204,7 +204,7 @@ Preview shows the transition too (WYSIWYG). No wipes/slides/LUTs beyond the four
 3. ✅ **Encoder + RTMP push SHIPPED** (2026-08-12) — the FFmpeg subprocess: raw BGRA frames via stdin, stderr health parsing, FLV mux + push to the ingestion URL (see the ship step 3 plan below)
 4. ✅ **WASAPI audio capture SHIPPED** (2026-08-12) — NAudio loopback (desktop/game) + the picked mic feeding `AudioLevel`, so the realtime meter comes alive (see the ship step 4 plan below)
 5. ✅ **Frame-pipeline wiring SHIPPED** (2026-08-12) — `CameraManager`/`ScreenCaptureManager` → compositor resolver → encoder, driven by a paced `FramePump` (see the ship step 5 plan below)
-6. ☐ **Health stats** — bitrate, FPS, dropped frames reported live in the bottom bar (req 5)
+6. ✅ **Health stats SHIPPED** (2026-08-13) — `FramePump.HealthUpdated` (encoder's parsed bitrate/FPS/dropped/duration, already forwarded from `FfmpegEncoder.OnStderrLine`) now lands in the bottom bar: `MainViewModel.OnFramePumpHealthUpdated` marshals to the UI thread (the stderr loop raises on a background thread) and copies into `CurrentHealth` (the bottom bar's existing binding); `ResetHealth` zeroes dropped/duration on go-live and on End so stats never linger from a previous session (bitrate/FPS stay on the tier's targets). The bar lights up with real values once TASK 5 supplies the RTMP URL (until then the pump skips the encoder and the bar shows the tier's targets)
 7. ☐ **One-click go live + private-only enforcement** — Go Live always creates/updates the broadcast with `privacyStatus = "private"` + PRIVATE badge (req 8, test-verifiable)
 
 The pipeline chain the encoder needs doesn't exist yet: **scene compositing** (the master 1920×1080 frame

ViewModels/MainViewModel.cs

@@ -1078,6 +1078,7 @@ public class MainViewModel : ViewModelBase
             log: message => AppLog.Write(message),
             socialBar: () => (_socialBarFrame, _socials?.BarPosition ?? SocialBarPosition.Bottom));
         _framePump.Failed += OnFramePumpFailed;
+        _framePump.HealthUpdated += OnFramePumpHealthUpdated;
 
         LoadLayout();
         _ = LoadSavedSessionAsync();
@@ -1965,6 +1966,7 @@ public class MainViewModel : ViewModelBase
                 ? "ytLlive"
                 : $"{dialog.StreamTitle} — ytLlive";
             StreamStatus = StreamStatus.Streaming;
+            ResetHealth(StreamStatus.Streaming);
             _ = _framePump.StartAsync(); // never throws; failures log + surface via Failed
         }
     }
@@ -1973,6 +1975,7 @@ public class MainViewModel : ViewModelBase
     {
         StreamStatus = StreamStatus.Offline;
         WindowTitle = "ytLlive";
+        ResetHealth(StreamStatus.Offline);
         // Audio capture is always-on (preview monitoring); only the frame pump
         // and the session stop here.
         _ = _framePump.StopAsync();
@@ -2114,6 +2117,42 @@ public class MainViewModel : ViewModelBase
         if (IsLive) StreamStatus = StreamStatus.Error;
     }
 
+    // TASK 4 ship step 6: the encoder's parsed health (bitrate/FPS/dropped/
+    // duration) lands in the bottom bar. The stderr loop raises on a background
+    // thread — marshal to the UI thread like the audio level handlers.
+    private void OnFramePumpHealthUpdated(object? sender, StreamHealth health)
+    {
+        var dispatcher = System.Windows.Application.Current?.Dispatcher;
+        if (dispatcher != null && !dispatcher.CheckAccess())
+            dispatcher.BeginInvoke(() => ApplyHealth(health));
+        else
+            ApplyHealth(health);
+    }
+
+    private void ApplyHealth(StreamHealth health)
+    {
+        CurrentHealth.Status = health.Status;
+        CurrentHealth.CurrentBitrate = health.CurrentBitrate;
+        CurrentHealth.FPS = health.FPS;
+        CurrentHealth.DroppedFrames = health.DroppedFrames;
+        CurrentHealth.StreamDuration = health.StreamDuration;
+        CurrentHealth.LastError = health.LastError;
+        CurrentHealth.HealthMessage = health.HealthMessage;
+        OnPropertyChanged(nameof(CurrentHealth));
+    }
+
+    // Keeps the bottom-bar stats honest across sessions: dropped frames and the
+    // elapsed duration must not linger from a previous go-live (bitrate/FPS stay
+    // on the tier's targets — ApplyStreamQuality sets them on pick).
+    private void ResetHealth(StreamStatus status)
+    {
+        CurrentHealth.Status = status;
+        CurrentHealth.DroppedFrames = 0;
+        CurrentHealth.StreamDuration = TimeSpan.Zero;
+        CurrentHealth.LastError = null;
+        OnPropertyChanged(nameof(CurrentHealth));
+    }
+
     private void UpdateLiveVisuals()
     {
         var live = IsLive;

ai.md

@@ -402,7 +402,7 @@ devices, no timers).
 **Deferred:** the loopback→encoder AAC mix wiring (a later step — the encoder construction + frame
 pipeline shipped in ship step 5).
 
-### Live frame pipeline (TASK 4 ship step 5 — shipped 2026-08-12, plan in TASKS.md)
+### Live frame pipeline (TASK 4 ship step 5 — shipped 2026-08-12, health stats 2026-08-13, plan in TASKS.md)
 
 The **`FramePump`** (`Services/Encoder/`) is the live frame producer: while live it snapshots the active
 scene each tick, resolves every element to its latest frame, composites it into the tier's output frame,
@@ -417,8 +417,14 @@ seam:** `Func<Scene?>`, `Func<SceneElement, VideoFrame?>` resolver, `Func<Compos
   until TASK 5 supplies the reusable stream's ingest URL, so go-live runs the current visual flow.
 - **Stop ordering matters:** `StopAsync` stops the encoder (closes stdin → EOF → ffmpeg finalizes+exits)
   **before** awaiting the loop, because closing stdin unblocks a write stuck on pipe backpressure — the
-  reverse order would deadlock. `ProcessFailed` self-stops the pump. `HealthUpdated` is forwarded
-  (ship step 6 binds it to the bottom bar); `Failed` while live flips `StreamStatus.Error` (minimal).
+  reverse order would deadlock. `ProcessFailed` self-stops the pump. `Failed` while live flips
+  `StreamStatus.Error` (minimal).
+- **Health stats (ship step 6, shipped 2026-08-13):** `HealthUpdated` is bound to the bottom bar —
+  `MainViewModel.OnFramePumpHealthUpdated` marshals to the UI thread (the encoder's stderr loop raises on
+  a background thread) and copies into `CurrentHealth` (the bottom bar's existing `CurrentHealth.*`
+  bindings). `ResetHealth(status)` zeroes dropped/duration on go-live and on End so stats never linger
+  from a previous session; bitrate/FPS stay on the tier's targets (`ApplyStreamQuality`). The bar shows
+  real encoder values once TASK 5 fills `_rtmpUrlProvider`; until then the pump skips the encoder.
 - **`MainViewModel` owns the resolver** (`ResolveOutputFrame`): `WebcamSceneConfig` →
   `CameraManager.GetLatestFrame(WebcamId)`, `Source { IsLiveCapture, CaptureKey }` →
   `ScreenCaptureManager.GetLatestFrame(CaptureKey)` (the new accessor mirroring `CameraManager`), image/