feat(ncm): 缓存分目录(songs//covers/)+ 陈旧 mp3 缓存修复
任务1 缓存分目录(用户定案):\n- ncm_cache_init mkdir songs/ 与 covers/ 子目录 + 一次性迁移\n (根混放 song_*/cov*/cover_current.jpg 挪进两子目录,幂等,legacy_migrated 计数)\n- ncm_cache_path 按 id 前缀路由(cov*→covers/,其余→songs/)\n- LRU(evict/total_bytes/7天 .part 回收)只扫 songs/;clear 清 songs/+covers/ 的 song_*\n- cover.c save_cover_raw 落 covers/cover_current.jpg\n\n任务2 陈旧 mp3 缓存修复(真机实锤:hires 档键下存 mp3,播放命中旧档):\n- song_local_file 缓存命中且用户档>EXHIGH(无损+)且实体是 .mp3 = 静默降级产物\n → 迁移重命名到 exhigh 键 song_<id>_exhigh.mp3(选极高仍可用;目标已存在删旧)\n → 本档视为未命中走下载(311 flac 门禁拿真无损/正确降级)\n\n验证:cache_evict_sim case10(目录迁移一次成型)+P1-9;player_flow_sim P13(迁移+miss)\n+P1-12 零回归;stream/window/search/degrade/cover_chain/test_ncm_core(host+qemu) 全 PASS;\nbuild_ncm.sh -Wall -Wextra 0 warning。0 真实请求。新 ncm md5 a90ba8c3 (text1028458/bss1364484)。
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@@ -87,6 +87,11 @@ int appstate_init(void)
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else
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ncm_ctx_default_cache_dir(g_st.data_dir, g_st.cache_dir, sizeof g_st.cache_dir);
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/* §NEW 缓存分目录一次性迁移:旧的 song_*、cov* 混放根 → songs/ 与 covers/(init 已搬完,此处只披露)。 */
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if (g_st.ctx.cache.legacy_migrated > 0)
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meow_log(MEOW_LOG_INFO, "ncm: cache legacy migration moved %d file(s) into songs/ and covers/",
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g_st.ctx.cache.legacy_migrated);
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/* 风控加固 §1:接口级 JSON 响应短 TTL 缓存的盘层挂到 <data_dir>/ncm_api_cache/。
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* (内存层由 core 初始化默认启用;盘层跨进程/热更保留,启动清一次过期盘文件。) */
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ncm_apicache_init(g_st.data_dir);
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