feat(dashboard): add stats entry point from car image

- Make car image clickable to navigate to Stats screen
- Add Analytics icon overlay on top-right of car image
- Pass onNavigateToStats callback through Dashboard components
- Add Screen.Stats route navigation from Dashboard

Users can now tap the car image on the Dashboard to access
the Stats for Nerds screen.

Part of Stats for Nerds feature (Phase 6)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/src/main/java/com/matedroid/ui/screens/dashboard/DashboardScreen.kt

@@ -43,6 +43,7 @@ import androidx.compose.material.icons.filled.DriveEta
 import androidx.compose.material.icons.filled.Terrain
 import androidx.compose.material.icons.filled.Thermostat
 import androidx.compose.material.icons.filled.Timeline
+import androidx.compose.material.icons.filled.Analytics
 import androidx.compose.material.icons.filled.ArrowDropDown
 import androidx.compose.material.icons.filled.Check
 import com.matedroid.ui.icons.CustomIcons
@@ -260,6 +261,11 @@ fun DashboardScreen(
                             uiState.selectedCarId?.let { carId ->
                                 onNavigateToUpdates(carId, uiState.selectedCarExterior?.exteriorColor)
                             }
+                        },
+                        onNavigateToStats = {
+                            uiState.selectedCarId?.let { carId ->
+                                onNavigateToStats(carId, uiState.selectedCarExterior?.exteriorColor)
+                            }
                         }
                     )
                 }
@@ -354,7 +360,8 @@ private fun DashboardContent(
     onNavigateToDrives: () -> Unit = {},
     onNavigateToBattery: () -> Unit = {},
     onNavigateToMileage: () -> Unit = {},
-    onNavigateToUpdates: () -> Unit = {}
+    onNavigateToUpdates: () -> Unit = {},
+    onNavigateToStats: () -> Unit = {}
 ) {
     val isDarkTheme = isSystemInDarkTheme()
     val palette = CarColorPalettes.forExteriorColor(carExterior?.exteriorColor, isDarkTheme)
@@ -374,7 +381,8 @@ private fun DashboardContent(
             carModel = carModel,
             carTrimBadging = carTrimBadging,
             carExterior = carExterior,
-            onNavigateToBattery = onNavigateToBattery
+            onNavigateToBattery = onNavigateToBattery,
+            onNavigateToStats = onNavigateToStats
         )
 
         // Location Section - show if we have coordinates
@@ -402,7 +410,8 @@ private fun CarImage(
     carModel: String?,
     carTrimBadging: String?,
     carExterior: CarExterior?,
-    modifier: Modifier = Modifier
+    modifier: Modifier = Modifier,
+    onNavigateToStats: (() -> Unit)? = null
 ) {
     val context = LocalContext.current
     val assetPath = remember(carModel, carTrimBadging, carExterior) {
@@ -443,12 +452,20 @@ private fun CarImage(
 
     if (bitmap != null) {
         Box(
-            modifier = modifier.height(210.dp),
+            modifier = modifier
+                .height(210.dp)
+                .then(
+                    if (onNavigateToStats != null) {
+                        Modifier.clickable(onClick = onNavigateToStats)
+                    } else {
+                        Modifier
+                    }
+                ),
             contentAlignment = Alignment.Center
         ) {
             Image(
                 bitmap = bitmap.asImageBitmap(),
-                contentDescription = "Car image",
+                contentDescription = "Car image - tap for stats",
                 modifier = Modifier
                     .fillMaxSize()
                     .graphicsLayer {
@@ -457,6 +474,25 @@ private fun CarImage(
                     },
                 contentScale = ContentScale.Fit
             )
+            // Chart icon overlay in top-right corner
+            if (onNavigateToStats != null) {
+                Box(
+                    modifier = Modifier
+                        .align(Alignment.TopEnd)
+                        .padding(8.dp)
+                        .size(36.dp)
+                        .clip(RoundedCornerShape(8.dp))
+                        .background(MaterialTheme.colorScheme.primaryContainer.copy(alpha = 0.9f))
+                        .padding(6.dp)
+                ) {
+                    Icon(
+                        imageVector = Icons.Default.Analytics,
+                        contentDescription = "View stats",
+                        tint = MaterialTheme.colorScheme.onPrimaryContainer,
+                        modifier = Modifier.fillMaxSize()
+                    )
+                }
+            }
         }
     }
 }
@@ -572,7 +608,8 @@ private fun BatteryCard(
     carModel: String? = null,
     carTrimBadging: String? = null,
     carExterior: CarExterior? = null,
-    onNavigateToBattery: () -> Unit = {}
+    onNavigateToBattery: () -> Unit = {},
+    onNavigateToStats: () -> Unit = {}
 ) {
     val isDarkTheme = isSystemInDarkTheme()
     val palette = CarColorPalettes.forExteriorColor(carExterior?.exteriorColor, isDarkTheme)
@@ -609,7 +646,8 @@ private fun BatteryCard(
                 carModel = carModel,
                 carTrimBadging = carTrimBadging,
                 carExterior = carExterior,
-                modifier = Modifier.fillMaxWidth()
+                modifier = Modifier.fillMaxWidth(),
+                onNavigateToStats = onNavigateToStats
             )
 
             // Battery info row - tappable to navigate to battery health