skill: add Android skills

.agents/skills/display-glasses-with-jetpack-compose-glimmer/references/titlechip-source.md

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+When creating a Glimmer Title Chip component, refer to the following source code
+in `TitleChip.kt`:
+
+
+```kotlin
+/*
+ * Copyright 2025 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.xr.glimmer
+
+import androidx.compose.foundation.BorderStroke
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.RowScope
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.defaultMinSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.layout.widthIn
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.dp
+
+/**
+ * Title Chip is a component used to provide context for associated content, such as a [Card]. They
+ * are designed for brief information, typically a short title, name, or status. Title chips are not
+ * focusable, and not interactable.
+ *
+ * @sample androidx.xr.glimmer.samples.TitleChipSample
+ *
+ * Title chips may have a leading icon to provide more context:
+ *
+ * @sample androidx.xr.glimmer.samples.TitleChipWithLeadingIconSample
+ *
+ * To use a title chip with another component, place the title chip
+ * [TitleChipDefaults.associatedContentSpacing] above the other component. For example, to use a
+ * title chip with a card:
+ *
+ * @sample androidx.xr.glimmer.samples.TitleChipWithCardSample
+ * @param modifier the [Modifier] to be applied to this title chip
+ * @param leadingIcon optional leading icon to be placed before the [content]. This is typically an
+ *   [Icon] tinted with [contentColor] by default.
+ * @param shape the [Shape] used to clip this title chip, and also used to draw the background and
+ *   border
+ * @param color background color of this title chip
+ * @param contentColor content color used by components inside [content] and [leadingIcon].
+ * @param border the border to draw around this title chip
+ * @param contentPadding the spacing values to apply internally between the container and the
+ *   content
+ * @param content the main content, typically [Text], to display inside this title chip
+ */
+@Composable
+public fun TitleChip(
+    modifier: Modifier = Modifier,
+    leadingIcon: @Composable (() -> Unit)? = null,
+    shape: Shape = GlimmerTheme.shapes.large,
+    color: Color = GlimmerTheme.colors.surface,
+    contentColor: Color = calculateContentColor(color),
+    border: BorderStroke? = SurfaceDefaults.border(),
+    contentPadding: PaddingValues = TitleChipDefaults.contentPadding,
+    content: @Composable RowScope.() -> Unit,
+) {
+    val iconSize = GlimmerTheme.iconSizes.small
+    val horizontalInnerContentPadding = GlimmerTheme.componentSpacingValues.extraSmall
+
+    CompositionLocalProvider(LocalTextStyle provides GlimmerTheme.typography.caption) {
+        Row(
+            modifier
+                .surface(
+                    shape = shape,
+                    color = color,
+                    contentColor = contentColor,
+                    depthEffect = null,
+                    border = border,
+                )
+                .defaultMinSize(minHeight = MinimumHeight)
+                .widthIn(max = MaximumWidth)
+                .padding(contentPadding),
+            horizontalArrangement = Arrangement.Center,
+            verticalAlignment = Alignment.CenterVertically,
+        ) {
+            if (leadingIcon != null) {
+                CompositionLocalProvider(LocalIconSize provides iconSize, content = leadingIcon)
+            }
+            Spacer(Modifier.width(horizontalInnerContentPadding))
+            content()
+            Spacer(Modifier.width(horizontalInnerContentPadding))
+        }
+    }
+}
+
+/** Default values used for [TitleChip]. */
+public object TitleChipDefaults {
+    /** Default content padding for a [TitleChip]. */
+    public val contentPadding: PaddingValues
+        @Composable get() = PaddingValues(GlimmerTheme.componentSpacingValues.extraSmall)
+
+    /**
+     * Default spacing between the bottom of a [TitleChip] and content associated with this title
+     * chip, such as a [Card]. For example this can be used with a
+     * [androidx.compose.foundation.layout.Spacer], or with [padding].
+     *
+     * @sample androidx.xr.glimmer.samples.TitleChipWithCardSample
+     */
+    public val associatedContentSpacing: Dp
+        @Composable get() = GlimmerTheme.componentSpacingValues.medium
+}
+
+/** Default minimum height for a [TitleChip] */
+private val MinimumHeight = 44.dp
+
+/** Default maximum width for a [TitleChip] */
+private val MaximumWidth = 352.dp
+```
+
+<br />