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/strings.sh

@@ -0,0 +1,90 @@
+# ============================================================================
+# 字符串工具模块测试（src/lib/strings.sh）
+# ============================================================================
+
+# 每个测试前重置依赖的全局状态
+setup() {
+  COLOR_OUTPUT=false
+  TMDB_LANG="zh-CN"
+  SPECIAL_MAP=()
+}
+
+# sanitize：删除非法字符
+test_sanitize_removes_illegal_chars() {
+  assert_eq "abcdefghij" "$(sanitize 'a/b\c:d*e?f"g<h>i|j')" "sanitize 应删除 \\ / : * ? \" < > |"
+}
+
+# sanitize：保留中文与空格
+test_sanitize_keeps_cjk_and_spaces() {
+  assert_eq "某科学的超电磁炮T" "$(sanitize '某科学的超电磁炮T')"
+  assert_eq "刀剑神域 爱丽丝篇" "$(sanitize '刀剑神域 爱丽丝篇')"
+}
+
+# sanitize：空输入
+test_sanitize_empty_input() {
+  assert_eq "" "$(sanitize "")"
+  assert_eq "" "$(sanitize "///")"
+}
+
+# clean_name：去方括号标记与首尾空白
+test_clean_name_strips_brackets_and_spaces() {
+  assert_eq "Show Title" "$(clean_name '[VCB-Studio] Show Title [1080p]')"
+  assert_eq "Title" "$(clean_name '  [A] Title [B]  ')"
+}
+
+# strip_season_suffix：多种季后缀
+test_strip_season_suffix_variants() {
+  assert_eq "Show" "$(strip_season_suffix 'Show S01')"
+  assert_eq "Show" "$(strip_season_suffix 'Show 2nd Season')"
+  assert_eq "Show" "$(strip_season_suffix 'Show S12')"
+  # 行为契约：仅剥离 Season 前带数字的形式；"Show Season 2" 由 parse_media_filename 处理
+  assert_eq "Show Season 2" "$(strip_season_suffix 'Show Season 2')"
+  assert_eq "无需处理" "$(strip_season_suffix '无需处理')"
+}
+
+# norm_str：全角转半角 + 去空格/连字符 + 小写
+test_norm_str_fullwidth_to_halfwidth() {
+  assert_eq "aliceization" "$(norm_str 'Ａliceｉｚａｔｉｏｎ')"
+  assert_eq "swordartonline" "$(norm_str 'Sword Art Online')"
+  assert_eq "iiiiiivv" "$(norm_str 'ⅡⅢⅣⅤ')"
+  assert_eq "menu01" "$(norm_str 'Ｍｅｎｕ ０１')"
+}
+
+# safe_printf_int：补零与非数字默认值
+test_safe_printf_int_padding() {
+  assert_eq "01" "$(safe_printf_int 1)"
+  assert_eq "23" "$(safe_printf_int 23)"
+  assert_eq "00" "$(safe_printf_int "")"
+  assert_eq "99" "$(safe_printf_int "abc" "99")"
+  assert_eq "07" "$(safe_printf_int "007")"
+}
+
+# normalize_abs：相对/绝对路径归一化
+test_normalize_abs_paths() {
+  local d
+  d="$(mktemp -d)"
+  assert_eq "$d" "$(normalize_abs "$d")" "绝对路径原样返回"
+  assert_eq "$d/sub" "$(normalize_abs "$d/sub")" "不存在的子目录也应归一化"
+  assert_eq "" "$(normalize_abs "")" "空串原样返回"
+  rm -rf "$d"
+}
+
+# is_companion：伴随文件判断
+test_is_companion_detection() {
+  assert_success is_companion "/path/Show.S01E01.mkv.ass" "/path/Show.S01E01.mkv"
+  assert_success is_companion "/path/Show.S01E01.zh-CN.ass" "/path/Show.S01E01"
+  assert_success is_companion "/path/Show.S01E01.flac" "/path/Show.S01E01"
+  assert_failure is_companion "/path/Other.mkv" "/path/Show.S01E01"
+  # 行为契约：视频自身去扩展名后等于 vbase → 也判为伴随（link_companions 调用前先跳过自身）
+  assert_success is_companion "/path/Show.S01E01.mkv" "/path/Show.S01E01"
+}
+
+# translate_fragment：查表、核心词回退、归一化
+test_translate_fragment_lookup() {
+  SPECIAL_MAP["menu"]='["Menu", "菜单"]'
+  SPECIAL_MAP["cm01"]='["CM", "广告"]'
+  assert_eq "Menu" "$(translate_fragment "Menu01")" "去数字后查核心词"
+  assert_eq "CM" "$(translate_fragment "CM01")" "精确键优先"
+  assert_eq "Menu" "$(translate_fragment "Ｍｅｎｕ01")" "全角归一化"
+  assert_eq "PV-01" "$(translate_fragment "PV-01")" "无映射时原样返回"
+}