android: fix voice file creation (mkdir errno logging), PTT while(true)

- voice_recorder: proper mkdir with errno/EEXIST check, errno logged on fopen failure
- MessageBubble: pointerInput wrapped in while(true) so PTT works after first gesture

tools/chatgui-android/app/src/main/java/com/utun/chat/ui/components/MessageBubble.kt

@@ -183,14 +183,15 @@ fun InputBar(
                     .background(pttBg, RoundedCornerShape(4.dp))
                     .pointerInput(hasMicPerm) {
                         awaitPointerEventScope {
+                            while (true) {
                                 val down = awaitPointerEvent()
-                            val ch = down.changes.firstOrNull() ?: return@awaitPointerEventScope
-                            if (!ch.pressed) return@awaitPointerEventScope
+                                val ch = down.changes.firstOrNull() ?: continue
+                                if (!ch.pressed) continue
                                 ch.consume()
 
                                 if (!hasMicPerm) {
                                     permLauncher.launch(Manifest.permission.RECORD_AUDIO)
-                                return@awaitPointerEventScope
+                                    continue
                                 }
 
                                 onPttPressed()
@@ -213,6 +214,7 @@ fun InputBar(
                                 }
                                 onPttReleased()
                             }
+                        }
                     },
                 contentAlignment = Alignment.Center
             ) {

tools/chatgui-android/libutun_lite/voice_recorder.c

@@ -15,6 +15,7 @@
 #include <pthread.h>
 #include <sys/stat.h>
 #include <unistd.h>
+#include <errno.h>
 
 #define MEDIA_BLOCK_MIN  (10 * 1024 * 1024)
 #define MEDIA_BLOCK_MAX  (25 * 1024 * 1024)
@@ -263,13 +264,21 @@ int voice_recorder_stop(int* out_duration_ms) {
     /* ensure media dir exists */
     char media_dir[1024];
     snprintf(media_dir, sizeof(media_dir), "%s/media/%s", g_rec->db_path, g_rec->channel_id);
+    DEBUG_INFO(DEBUG_CATEGORY_GENERAL, "voice_recorder_stop: db_path=%s ch=%s media_dir=%s",
+               g_rec->db_path, g_rec->channel_id, media_dir);
     {
         char tmp[1024]; size_t off = 0;
         for (size_t i = 0; media_dir[i] && off < sizeof(tmp) - 1; i++) {
             tmp[off++] = media_dir[i];
-            if (media_dir[i] == '/' && off > 1) { tmp[off] = '\0'; mkdir(tmp, 0755); }
+            if (media_dir[i] == '/' && off > 1) {
+                tmp[off - 1] = '\0';
+                if (mkdir(tmp, 0755) != 0 && errno != EEXIST)
+                    DEBUG_WARN(DEBUG_CATEGORY_GENERAL, "voice_recorder_stop: mkdir(%s) errno=%d", tmp, errno);
+                tmp[off - 1] = '/';
             }
-        mkdir(tmp, 0755);
+        }
+        if (mkdir(tmp, 0755) != 0 && errno != EEXIST)
+            DEBUG_WARN(DEBUG_CATEGORY_GENERAL, "voice_recorder_stop: mkdir(%s) errno=%d", tmp, errno);
     }
 
     /* encode to Opus and write blocks */
@@ -288,7 +297,7 @@ int voice_recorder_stop(int* out_duration_ms) {
     snprintf(temp_path, sizeof(temp_path), "%s/%s_%s_%s.opus", media_dir, dt, basename, suffix);
     FILE* of = fopen(temp_path, "wb");
     if (!of) {
-        DEBUG_ERROR(DEBUG_CATEGORY_GENERAL, "voice_recorder_stop: cannot create %s", temp_path);
+        DEBUG_ERROR(DEBUG_CATEGORY_GENERAL, "voice_recorder_stop: cannot create %s (errno=%d)", temp_path, errno);
         opus_codec_encoder_destroy(enc);
         voice_cleanup_locked(g_rec);
         pthread_mutex_unlock(&g_rec->mtx);