feat: hydrate board label chip colors from API

app/src/androidTest/java/space/hackenslacker/kanbn4droid/app/BoardDetailFlowTest.kt

@@ -25,6 +25,7 @@ import androidx.test.espresso.matcher.ViewMatchers.withText
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.viewpager2.widget.ViewPager2
 import com.google.android.material.color.MaterialColors
+import com.google.android.material.chip.Chip
 import java.text.DateFormat
 import java.util.ArrayDeque
 import java.util.Date
@@ -148,6 +149,22 @@ class BoardDetailFlowTest {
         onView(withId(R.id.cardDueDateText)).check(matches(withCurrentTextColor(expectedColor ?: Color.BLACK)))
     }
 
+    @Test
+    fun invalidTagColorFallsBackToOnSurfaceColor() {
+        defaultDataSource.currentDetail = detailWithInvalidTagColor()
+        val scenario = launchBoardDetail()
+
+        var expectedColor: Int? = null
+        scenario.onActivity { activity ->
+            expectedColor = MaterialColors.getColor(
+                activity.findViewById(android.R.id.content),
+                com.google.android.material.R.attr.colorOnSurface,
+            )
+        }
+
+        onView(withText("Backend")).check(matches(withChipStrokeColor(expectedColor ?: Color.DKGRAY)))
+    }
+
     @Test
     fun dueDateUsesSystemLocaleFormatting() {
         Locale.setDefault(Locale.FRANCE)
@@ -571,6 +588,21 @@ class BoardDetailFlowTest {
         }
     }
 
+    private fun withChipStrokeColor(expectedColor: Int): Matcher<View> {
+        return object : TypeSafeMatcher<View>() {
+            override fun describeTo(description: Description) {
+                description.appendText("with chip stroke color: $expectedColor")
+            }
+
+            override fun matchesSafely(item: View): Boolean {
+                if (item !is Chip) {
+                    return false
+                }
+                return item.chipStrokeColor?.defaultColor == expectedColor
+            }
+        }
+    }
+
     private fun awaitCondition(timeoutMs: Long = 4_000L, condition: () -> Boolean) {
         val instrumentation = androidx.test.platform.app.InstrumentationRegistry.getInstrumentation()
         val start = System.currentTimeMillis()
@@ -757,6 +789,25 @@ class BoardDetailFlowTest {
             )
         }
 
+        fun detailWithInvalidTagColor(): BoardDetail {
+            return detailOneList().copy(
+                lists = listOf(
+                    BoardListDetail(
+                        id = "list-1",
+                        title = "To Do",
+                        cards = listOf(
+                            BoardCardSummary(
+                                id = "card-1",
+                                title = "Card 1",
+                                tags = listOf(BoardTagSummary("tag-1", "Backend", "bad-color")),
+                                dueAtEpochMillis = null,
+                            ),
+                        ),
+                    ),
+                ),
+            )
+        }
+
         fun detailWithCardTitle(title: String): BoardDetail {
             return detailOneList().copy(
                 lists = listOf(