Mobile UI pass: responsive tables, deck-view drill-down, dialog fixes

- Library/Card Search/Deck tables stack into dense card-style rows below
  720px instead of scrolling horizontally (floated thumbnail, wrapping
  chips for MV/Owned/color pips).
- Deck view: fix desktop min-widths and a non-wrapping button row that
  forced horizontal scroll on phones; split the deck list and the
  deck-building pane into separate drill-down screens with a back button
  so a long deck list doesn't bury the builder.
- Suggested Cards modal: fix action buttons crushing the card name down to
  one word per line by giving them their own full-width row.
- Add a close (X) button to the shared dialog title bar — mobile has no
  Escape key and wide dialogs leave little backdrop to tap.
- Info tab, bottom-nav loading/safe-area fixes, and Gradle NDK_HOME
  inheritance fix carried over from the Android bring-up work.

src-tauri/gen/android/buildSrc/src/main/java/com/garrettmills/mtgc/kotlin/BuildTask.kt

@@ -1,4 +1,5 @@
 import java.io.File
+import java.util.Properties
 import org.apache.tools.ant.taskdefs.condition.Os
 import org.gradle.api.DefaultTask
 import org.gradle.api.GradleException
@@ -50,9 +51,23 @@ open class BuildTask : DefaultTask() {
         val release = release ?: throw GradleException("release cannot be null")
         val args = listOf("tauri", "android", "android-studio-script");
 
+        // `project.exec` inherits whatever environment the Gradle daemon has —
+        // which is whatever launched Android Studio, not necessarily a shell
+        // where ANDROID_HOME/NDK_HOME were exported. Without NDK_HOME, cargo's
+        // build script for `ring` (and rusqlite's bundled SQLite) can't find
+        // the NDK's clang and rustBuild*Debug/Release fails outright. Read
+        // local.properties instead — the same file AGP itself reads sdk.dir
+        // from — so this works regardless of how Studio was started.
+        val localProps = Properties().apply {
+            val f = project.rootProject.file("local.properties")
+            if (f.exists()) f.inputStream().use { load(it) }
+        }
+
         project.exec {
             workingDir(File(project.projectDir, rootDirRel))
             executable(executable)
+            localProps.getProperty("sdk.dir")?.let { environment("ANDROID_HOME", it) }
+            localProps.getProperty("ndk.dir")?.let { environment("NDK_HOME", it) }
             args(args)
             if (project.logger.isEnabled(LogLevel.DEBUG)) {
                 args("-vv")