docs(changelog): 新增 5.0.0-rc.4 CHANGELOG 條目

新增 rc.4 變更紀錄，涵蓋自 rc.3 以來的所有變更：
- feat: uds audit 指令、file-placement-guide、audit-assistant skill
- fix: config displayLanguage、skills-uninstaller 測試、文件套件名稱
- docs: README 重構、SPEC-AUDIT-01 重寫

同步更新 uds-manifest.json 和 README 統計表（skills 27→29）

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

CHANGELOG.md

@@ -9,6 +9,31 @@ and this project adheres to [Semantic Versioning](https://semver.org/).
 
 ## [Unreleased]
 
+## [5.0.0-rc.4] - 2026-03-05
+
+> **Release Candidate**: Fourth RC for v5.0.0 with new audit command, file placement guide, and skill inter-linking.
+
+### Added
+- **`uds audit` Command**: New CLI command for UDS health checks and feedback collection (`--health`, `--patterns`, `--friction`, `--report`)
+- **File Placement Decision Guide**: New `core/guides/file-placement-guide.md` — master decision tree, reverse lookup index (30+ file types), code organization deep dive, development artifacts lifecycle
+- **Source Code Organization Terminology**: Added utils/helpers/shared/lib/internal disambiguation to `project-structure.md`
+- **Configuration Files Placement**: Added standard locations for tool configs, app configs, env vars, CI/CD, IaC
+- **Generated Code Placement**: Added `src/generated/` standard with gitignore guidelines
+- **Development Artifacts Directory**: Added `docs/working/` structure with lifecycle management (brainstorms, RFCs, investigations, POCs)
+- **Expanded Document Types Matrix**: Complete file type → destination mapping in `documentation-structure.md`
+- **Audit Assistant Skill**: New `/audit` skill with health check and feedback workflows
+- **Skill Inter-linking**: Added `/audit` next-step suggestions to `/checkin`, `/review`, `/commit`, `/sdd`
+- **Next Steps Guidance**: Added next-step suggestions to 17 existing skills
+
+### Fixed
+- **Config Display Language**: Fix `displayLanguage` not passed to config path
+- **Skills Uninstaller Tests**: Fix tests accidentally deleting user-level directories
+- **Package Name in Docs**: Fix incorrect package name references
+
+### Changed
+- **README Structure**: Extract pre-release info and add config/uninstall/methodology sections
+- **SPEC-AUDIT-01**: Rewritten as user-oriented specification with brainstorm integration
+
 ## [5.0.0-rc.2] - 2026-02-13
 
 > **Release Candidate**: Second RC for v5.0.0 with documentation improvements and CLI bug fixes.

README.md

@@ -56,7 +56,7 @@ npx universal-dev-standards init
 | Category | Count | Description |
 |----------|-------|-------------|
 | **Core Standards** | 32 | Universal development guidelines |
-| **AI Skills** | 27 | Interactive skills |
+| **AI Skills** | 29 | Interactive skills |
 | **Slash Commands** | 30 | Quick actions |
 | **CLI Commands** | 6 | list, init, configure, check, update, skills |
 <!-- UDS_STATS_TABLE_END -->

locales/zh-CN/README.md

@@ -56,7 +56,7 @@ npx universal-dev-standards init
 | 类别 | 数量 | 说明 |
 |----------|-------|-------------|
 | **核心标准** | 32 | 通用开发准则 |
-| **AI Skills** | 27 | 互动式技能 |
+| **AI Skills** | 29 | 互动式技能 |
 | **斜线命令** | 30 | 快速操作 |
 | **CLI 命令** | 6 | list, init, configure, check, update, skills |
 <!-- UDS_STATS_TABLE_END -->

locales/zh-TW/README.md

@@ -56,7 +56,7 @@ npx universal-dev-standards init
 | 類別 | 數量 | 說明 |
 |----------|-------|-------------|
 | **核心標準** | 32 | 通用開發準則 |
-| **AI Skills** | 27 | 互動式技能 |
+| **AI Skills** | 29 | 互動式技能 |
 | **斜線命令** | 30 | 快速操作 |
 | **CLI 指令** | 6 | list, init, configure, check, update, skills |
 <!-- UDS_STATS_TABLE_END -->

uds-manifest.json

@@ -4,7 +4,7 @@
   "last_updated": "2026-02-12",
   "stats": {
     "core_standards": 32,
-    "skills": 27,
+    "skills": 29,
     "slash_commands": 30
   },
   "standards": [
@@ -329,6 +329,16 @@
       "id": "workflows",
       "command": "/guide",
       "category": "uncategorized"
+    },
+    {
+      "id": "audit-assistant",
+      "command": "/guide",
+      "category": "uncategorized"
+    },
+    {
+      "id": "dev-workflow-guide",
+      "command": "/guide",
+      "category": "uncategorized"
     }
   ],
   "agent_support": {