refactor: 迁移至 bashly CLI 与功能域模块结构

- CLI 定义迁移至 src/bashly.yml（bashly 1.4 生成参数解析），入口收敛为 src/root_command.sh
- 源码按功能域重组：config/storage/integrate/media/pipeline，消除扁平散落
- 新增零依赖测试框架 tests/（123 用例）与 CI 流水线（lint + test + build + 产物一致性）
- build.sh 支持版本单一来源注入与 --check 产物校验；新增 lint.sh（bash -n + shellcheck 零容忍）
- 删除旧单文件 media_organizer.sh 与旧扁平模块

tests/cases/storage/cache.sh

@@ -0,0 +1,67 @@
+# ============================================================================
+# 缓存管理模块测试（src/lib/cache.sh）
+# ============================================================================
+
+setup() {
+  CACHE_DIR="$(mktemp -d)"
+  TMDB_LANG="zh-CN"
+}
+
+teardown() {
+  rm -rf "$CACHE_DIR"
+}
+
+# cache_path：搜索类用 md5 哈希文件名
+test_cache_path_search_endpoint() {
+  local p
+  p="$(cache_path "/search/movie" "query=刀剑&year=2020")"
+  assert_eq "$CACHE_DIR/tmdb/search/movie/$(cache_key_hash "query=刀剑&year=2020").json" "$p"
+}
+
+# cache_path：tv 详情含语言段
+test_cache_path_tv_detail() {
+  assert_eq "$CACHE_DIR/tmdb/tv/12345.zh-CN.json" "$(cache_path "/tv/12345" "x")"
+}
+
+# cache_path：季数据含语言段
+test_cache_path_tv_season() {
+  assert_eq "$CACHE_DIR/tmdb/tv/12345/season/1.zh-CN.json" "$(cache_path "/tv/12345/season/1" "x")"
+}
+
+# cache_path：movie 详情含语言段
+test_cache_path_movie_detail() {
+  assert_eq "$CACHE_DIR/tmdb/movie/6789.zh-CN.json" "$(cache_path "/movie/6789" "x")"
+}
+
+# cache_path：语言切换后路径变化（缓存自动失效）
+test_cache_path_lang_switch_changes_path() {
+  TMDB_LANG="ja-JP"
+  assert_eq "$CACHE_DIR/tmdb/tv/12345.ja-JP.json" "$(cache_path "/tv/12345" "x")"
+}
+
+# cache_key：拼接参数并追加 lang
+test_cache_key_joins_args_with_lang() {
+  assert_eq "query=刀剑&lang=zh-CN" "$(cache_key "query=刀剑")"
+  assert_eq "a=1&b=2&lang=zh-CN" "$(cache_key "a=1" "&b=2")"
+}
+
+# cache_key_hash：md5 稳定
+test_cache_key_hash_stable() {
+  local h1 h2
+  h1="$(cache_key_hash "query=hello")"
+  h2="$(cache_key_hash "query=hello")"
+  assert_eq "$h1" "$h2"
+  assert_eq "5d41402abc4b2a76b9719d911017c592" "$(cache_key_hash "hello")"
+}
+
+# cache_expired：TTL 内不失效，超期失效
+test_cache_expired_ttl() {
+  local f="$CACHE_DIR/f.json"
+  echo '{}' >"$f"
+  touch -d "2 days ago" "$f"
+  assert_success cache_expired "$f" 1
+  assert_failure cache_expired "$f" 30
+  # 新文件不失效
+  echo '{}' >"$f"
+  assert_failure cache_expired "$f" 1
+}