feat(bt): 批①后台常驻框架实施 — meow_media_app_resident按app会话判活跃+should_keep三参(keepalive||bg_audio&&resident)+background_keepalive声明解析透传+amsd EV BG/FG上报;宿主test_media39/test_bgplay/test_bg_keep19全过,0warning;落盘APP_BACKGROUND_KEEPALIVE_P1;降配(nice)待真机未做

patch_v2/meow_launcherd/test_media.c

@@ -191,6 +191,25 @@ int main(void)
     CHECK(meow_media_app_playing("com.ncm") == 0, "app_playing: not current source == 0");
     meow_media_clear(NULL);
 
+    /* 9) 批①后台常驻判定 meow_media_app_resident（launcher 转后台保活判据：会话存在且 state≠STOPPED） */
+    CHECK(meow_media_app_resident("com.ncm") == 0, "resident: no source == 0");
+    fill_meta(&m, "com.ncm", MEOW_MEDIA_PLAYING, 1000, 240000, "Song A", "Artist A");
+    meow_media_meta(&m, sv[0]);
+    CHECK(meow_media_app_resident("com.ncm") == 1, "resident: PLAYING == 1");
+    CHECK(meow_media_app_resident("com.other") == 0, "resident: other app (no session) == 0");
+    fill_meta(&m, "com.ncm", MEOW_MEDIA_PAUSED, 1000, 240000, "Song A", "Artist A");
+    meow_media_meta(&m, sv[0]);
+    CHECK(meow_media_app_resident("com.ncm") == 1, "resident: PAUSED == 1 (暂停也常驻)");
+    fill_meta(&m, "com.ncm", MEOW_MEDIA_BUFFER, 1000, 240000, "Song A", "Artist A");
+    meow_media_meta(&m, sv[0]);
+    CHECK(meow_media_app_resident("com.ncm") == 1, "resident: BUFFER == 1");
+    fill_meta(&m, "com.ncm", MEOW_MEDIA_STOPPED, 0, 0, "Song A", "Artist A");
+    meow_media_meta(&m, sv[0]);
+    CHECK(meow_media_app_resident("com.ncm") == 0, "resident: STOPPED == 0");
+    CHECK(meow_media_app_resident("") == 0, "resident: empty app_id == 0");
+    CHECK(meow_media_app_resident(NULL) == 0, "resident: NULL app_id == 0");
+    meow_media_clear(NULL);
+
     printf("\n%s (%d fails)\n", g_fails ? "FAILED" : "ALL PASS", g_fails);
     return g_fails ? 1 : 0;
 }