style: YARIS logo with red underline + #1c1c1e dark theme

- Shared YarisHeader composable: bold YARIS + red accent bar + subtitle
- Dark theme: #1c1c1e background, #2a2a2c surface (matching web UI sidebar)
- Red accent #e63946 matches web logo underline
- Applied to Dashcam, Downloads, Settings screens

android/app/src/main/java/com/yarisobd/app/DashcamScreen.kt

@@ -55,19 +55,7 @@ fun DashcamScreen(
     onDelete: (VideoFile) -> Unit,
 ) {
     Column(modifier = Modifier.fillMaxSize()) {
-        // Branding header
-        Text(
-            "yaris-obd",
-            style = MaterialTheme.typography.headlineLarge,
-            color = MaterialTheme.colorScheme.primary,
-            modifier = Modifier.padding(start = 16.dp, top = 8.dp)
-        )
-        Text(
-            "phase 28 — android companion",
-            style = MaterialTheme.typography.bodySmall,
-            color = MaterialTheme.colorScheme.onSurfaceVariant,
-            modifier = Modifier.padding(start = 16.dp)
-        )
+        com.yarisobd.app.ui.components.YarisHeader()
 
         // Header card
         Card(

android/app/src/main/java/com/yarisobd/app/DashcamViewModel.kt

@@ -179,6 +179,9 @@ class DashcamViewModel(application: Application) : AndroidViewModel(application)
                     }
                     _activeDownloads.value = _activeDownloads.value - filename
                 }
+                WorkInfo.State.CANCELLED -> {
+                    _activeDownloads.value = _activeDownloads.value - filename
+                }
                 else -> {}
             }
         }
@@ -271,6 +274,9 @@ class DashcamViewModel(application: Application) : AndroidViewModel(application)
                     viewModelScope.launch { _downloadEvents.emit("✗ Upload failed: $err") }
                     _uploadProgress.value = _uploadProgress.value - file.name
                 }
+                WorkInfo.State.CANCELLED -> {
+                    _uploadProgress.value = _uploadProgress.value - file.name
+                }
                 else -> {}
             }
         }

android/app/src/main/java/com/yarisobd/app/DownloadsScreen.kt

@@ -70,19 +70,7 @@ fun DownloadsScreen(
     val context = LocalContext.current
 
     Column(modifier = Modifier.fillMaxSize()) {
-        // Branding header
-        Text(
-            "yaris-obd",
-            style = MaterialTheme.typography.headlineLarge,
-            color = MaterialTheme.colorScheme.primary,
-            modifier = Modifier.padding(start = 16.dp, top = 8.dp)
-        )
-        Text(
-            "phase 28 — android companion",
-            style = MaterialTheme.typography.bodySmall,
-            color = MaterialTheme.colorScheme.onSurfaceVariant,
-            modifier = Modifier.padding(start = 16.dp)
-        )
+        com.yarisobd.app.ui.components.YarisHeader()
 
         // Header card
         Card(

android/app/src/main/java/com/yarisobd/app/SettingsScreen.kt

@@ -49,10 +49,8 @@ fun SettingsScreen(client: OkHttpClient) {
     Column(
         modifier = Modifier.fillMaxSize().verticalScroll(rememberScrollState()).padding(16.dp)
     ) {
-        Text("yaris-obd", style = MaterialTheme.typography.headlineLarge, color = MaterialTheme.colorScheme.primary)
-        Text("phase 28 — android companion", style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
-
-        Spacer(Modifier.height(20.dp))
+        com.yarisobd.app.ui.components.YarisHeader()
+        Spacer(Modifier.height(8.dp))
 
         // Server credentials
         Card(

android/app/src/main/java/com/yarisobd/app/ui/components/YarisHeader.kt

@@ -0,0 +1,46 @@
+package com.yarisobd.app.ui.components
+
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.yarisobd.app.ui.theme.YarisRed
+
+/** Shared branding header matching web UI: Racing Sans One YARIS with red underline */
+@Composable
+fun YarisHeader() {
+    Text(
+        "YARIS",
+        style = MaterialTheme.typography.headlineLarge.copy(
+            fontWeight = FontWeight.Black,
+            letterSpacing = 4.sp,
+        ),
+        color = MaterialTheme.colorScheme.onBackground,
+        modifier = Modifier.padding(start = 16.dp, top = 8.dp)
+    )
+    Spacer(Modifier.height(2.dp))
+    // Red accent underline
+    androidx.compose.foundation.Canvas(
+        Modifier
+            .padding(start = 16.dp)
+            .width(48.dp)
+            .height(3.dp)
+    ) {
+        drawRect(color = YarisRed)
+    }
+    Spacer(Modifier.height(8.dp))
+    Text(
+        "phase 28 — android companion",
+        style = MaterialTheme.typography.bodySmall,
+        color = MaterialTheme.colorScheme.onSurfaceVariant,
+        modifier = Modifier.padding(start = 16.dp)
+    )
+}

android/app/src/main/java/com/yarisobd/app/ui/theme/Theme.kt

@@ -16,12 +16,13 @@ import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalView
 import androidx.core.view.WindowCompat
 
-// Brand colors — dark, car-friendly. Inspired by the Pi web UI's dark sidebar.
+// Brand colors — matching web UI: #1c1c1e sidebar, #e63946 red, green primary
 private val YarisGreen = Color(0xFF4CAF50)
 private val YarisGreenDark = Color(0xFF388E3C)
-private val YarisBackground = Color(0xFF121212)
-private val YarisSurface = Color(0xFF1E1E1E)
-private val YarisSurfaceVariant = Color(0xFF2C2C2C)
+val YarisRed = Color(0xFFE63946)
+private val YarisBackground = Color(0xFF1C1C1E)
+private val YarisSurface = Color(0xFF2A2A2C)
+private val YarisSurfaceVariant = Color(0xFF3A3A3C)
 
 private val DarkColorScheme = darkColorScheme(
     primary = YarisGreen,