Require native Git runtime and bundle full manpages

- Remove the app fallback path when native Git is unavailable and show a startup blocker instead
- Fix native level setup for staged file counting and cherry-pick parity
- Improve manpage loading/search and bundle full Git documentation assets
- Integrate Git cross-compilation into AndroidProjectTooling.sh and remove debug AAB support

app/src/main/java/solutions/tretter/githugandroid/ManPageDialog.kt

@@ -27,6 +27,9 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.SpanStyle
 import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
@@ -38,6 +41,13 @@ data class ManPageState(
     val content: String,
 )
 
+private data class ManPageMatch(
+    val start: Int,
+    val end: Int,
+    val lineIndex: Int,
+    val columnIndex: Int,
+)
+
 @Composable
 fun ManPageDialog(
     state: ManPageState,
@@ -52,21 +62,52 @@ fun ManPageDialog(
         if (searchQuery.isBlank()) {
             emptyList()
         } else {
-            contentLines.mapIndexedNotNull { index, line ->
-                index.takeIf { line.contains(searchQuery, ignoreCase = true) }
+            val result = mutableListOf<ManPageMatch>()
+            var absoluteLineStart = 0
+            contentLines.forEachIndexed { lineIndex, line ->
+                var searchFrom = 0
+                while (searchFrom <= line.length) {
+                    val columnIndex = line.indexOf(searchQuery, searchFrom, ignoreCase = true)
+                    if (columnIndex == -1) break
+                    val start = absoluteLineStart + columnIndex
+                    result += ManPageMatch(
+                        start = start,
+                        end = start + searchQuery.length,
+                        lineIndex = lineIndex,
+                        columnIndex = columnIndex,
+                    )
+                    searchFrom = columnIndex + searchQuery.length.coerceAtLeast(1)
+                }
+                absoluteLineStart += line.length + 1
             }
+            result
         }
     }
     val matchCount = matches.size
     val currentMatchNumber = if (matchCount == 0) 0 else selectedMatch + 1
+    val highlightedContent = remember(state.content, matches, selectedMatch) {
+        AnnotatedString.Builder(state.content).apply {
+            matches.forEachIndexed { index, match ->
+                addStyle(
+                    SpanStyle(
+                        color = if (index == selectedMatch) Color.White else Color.Black,
+                        background = if (index == selectedMatch) Color(0xFFD32F2F) else Color(0xFFFFEB3B),
+                    ),
+                    match.start,
+                    match.end,
+                )
+            }
+        }.toAnnotatedString()
+    }
 
     LaunchedEffect(searchQuery, matchCount) {
         selectedMatch = selectedMatch.coerceIn(0, (matchCount - 1).coerceAtLeast(0))
     }
 
     LaunchedEffect(selectedMatch, matches) {
-        val lineIndex = matches.getOrNull(selectedMatch) ?: return@LaunchedEffect
-        verticalScrollState.animateScrollTo((lineIndex * 18).coerceAtMost(verticalScrollState.maxValue))
+        val match = matches.getOrNull(selectedMatch) ?: return@LaunchedEffect
+        verticalScrollState.animateScrollTo((match.lineIndex * 18).coerceAtMost(verticalScrollState.maxValue))
+        horizontalScrollState.animateScrollTo((match.columnIndex * 8).coerceAtMost(horizontalScrollState.maxValue))
     }
 
     Dialog(onDismissRequest = onClose) {
@@ -170,7 +211,7 @@ fun ManPageDialog(
                 ) {
                     SelectionContainer {
                         Text(
-                            text = state.content,
+                            text = highlightedContent,
                             modifier = Modifier.widthIn(min = 1200.dp),
                             color = TextPrimary,
                             fontFamily = FontFamily.Monospace,