diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 48d3247f..1c85f24a 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -12,7 +12,7 @@
       "name": "codingbuddy",
       "source": "./packages/claude-code-plugin",
       "description": "PLAN/ACT/EVAL workflow, specialist agents, and reusable skills for systematic TDD development",
-      "version": "5.1.2",
+      "version": "5.1.3",
       "category": "development"
     }
   ]
diff --git a/CHANGELOG.es.md b/CHANGELOG.es.md
index 7d43863a..ee5fc864 100644
--- a/CHANGELOG.es.md
+++ b/CHANGELOG.es.md
@@ -5,6 +5,17 @@ Todos los cambios notables de este proyecto se documentarán en este archivo.
 El formato está basado en [Keep a Changelog](https://keepachangelog.com/es-ES/1.1.0/),
 y este proyecto se adhiere a [Versionado Semántico](https://semver.org/lang/es/spec/v2.0.0.html).
 
+## [5.1.3] - 2026-04-01
+
+### Agregado
+- **Puente de archivo TUI**: Puente basado en `fs.watch` para actualizaciones de la barra lateral TUI en modo stdio (#1104, #1105)
+- **Actualización automática del marketplace**: Hook session-start auto-fetch del clon del marketplace con limitación de 24h (#1101, #1107)
+- **Configuración automática MCP**: Creación automática de `~/.claude/mcp.json` al inicio de sesión para conectividad MCP (#1100, #1106)
+
+### Corregido
+- **Directorio lib/ del hook**: session-start ahora copia `lib/` junto al archivo del hook, corrigiendo las actualizaciones de estado HUD (#1102, #1103)
+- **mcp.json faltante**: Las herramientas MCP ya no están indisponibles después de instalar el plugin (#1100, #1106)
+
 ## [5.1.2] - 2026-03-29
 
 ### Agregado
diff --git a/CHANGELOG.ja.md b/CHANGELOG.ja.md
index cdf014a0..9a945587 100644
--- a/CHANGELOG.ja.md
+++ b/CHANGELOG.ja.md
@@ -5,6 +5,17 @@
 このドキュメントは [Keep a Changelog](https://keepachangelog.com/ja/1.1.0/) の形式に基づいており、
 [セマンティック バージョニング](https://semver.org/lang/ja/spec/v2.0.0.html) に準拠しています。
 
+## [5.1.3] - 2026-04-01
+
+### 追加
+- **TUIファイルブリッジ**: `fs.watch`ベースのブリッジにより、stdioモードでTUIサイドバーの更新をサポート (#1104, #1105)
+- **マーケットプレイス自動更新**: session-startフックでマーケットプレイスクローンを自動fetch（24時間スロットル） (#1101, #1107)
+- **MCP自動設定**: セッション開始時に`~/.claude/mcp.json`を自動生成し、MCP接続を保証 (#1100, #1106)
+
+### 修正
+- **フックlib/ディレクトリ**: session-startがフックファイルと共に`lib/`をコピーし、HUD状態更新を修正 (#1102, #1103)
+- **mcp.json欠落**: プラグインインストール後にMCPツールが利用できない問題を修正 (#1100, #1106)
+
 ## [5.1.2] - 2026-03-29
 
 ### 追加
diff --git a/CHANGELOG.ko.md b/CHANGELOG.ko.md
index 2947b829..ee257c62 100644
--- a/CHANGELOG.ko.md
+++ b/CHANGELOG.ko.md
@@ -5,6 +5,17 @@
 이 문서는 [Keep a Changelog](https://keepachangelog.com/ko/1.1.0/) 형식을 따르며,
 [Semantic Versioning](https://semver.org/lang/ko/spec/v2.0.0.html)을 준수합니다.
 
+## [5.1.3] - 2026-04-01
+
+### 추가됨
+- **TUI 파일 브릿지**: `fs.watch` 기반 브릿지로 stdio 모드에서 TUI 사이드바 업데이트 지원 (#1104, #1105)
+- **마켓플레이스 자동 업데이트**: session-start 훅에서 마켓플레이스 클론 자동 fetch (24시간 스로틀) (#1101, #1107)
+- **MCP 자동 구성**: 세션 시작 시 `~/.claude/mcp.json` 자동 생성으로 MCP 연결 보장 (#1100, #1106)
+
+### 수정됨
+- **훅 lib/ 디렉토리**: session-start가 훅 파일과 함께 `lib/`을 복사하여 HUD 상태 업데이트 수정 (#1102, #1103)
+- **mcp.json 누락**: 플러그인 설치 후 MCP 도구를 사용할 수 없는 문제 수정 (#1100, #1106)
+
 ## [5.1.2] - 2026-03-29
 
 ### 추가됨
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 02e7174f..a5e8e9cf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [5.1.3] - 2026-04-01
+
+### Added
+- **TUI File Bridge**: `fs.watch`-based bridge enables TUI sidebar updates in stdio mode (#1104, #1105)
+- **Marketplace Auto-Update**: Session-start hook auto-fetches marketplace clone with 24h throttle (#1101, #1107)
+- **MCP Auto-Configuration**: Auto-create `~/.claude/mcp.json` on session start for seamless MCP connectivity (#1100, #1106)
+
+### Fixed
+- **Hook lib/ directory**: Session-start now copies `lib/` alongside hook file, fixing HUD state updates (#1102, #1103)
+- **mcp.json missing**: Plugin installation no longer leaves MCP tools unavailable (#1100, #1106)
+
 ## [5.1.2] - 2026-03-29
 
 ### Added
diff --git a/CHANGELOG.zh-CN.md b/CHANGELOG.zh-CN.md
index 36e7fbf7..cf06f74d 100644
--- a/CHANGELOG.zh-CN.md
+++ b/CHANGELOG.zh-CN.md
@@ -5,6 +5,17 @@
 本文档格式基于 [Keep a Changelog](https://keepachangelog.com/zh-CN/1.1.0/)，
 并遵循 [语义化版本](https://semver.org/lang/zh-CN/spec/v2.0.0.html)。
 
+## [5.1.3] - 2026-04-01
+
+### 新增
+- **TUI文件桥接**: 基于`fs.watch`的桥接，支持stdio模式下TUI侧边栏更新 (#1104, #1105)
+- **市场自动更新**: session-start钩子自动fetch市场克隆（24小时节流） (#1101, #1107)
+- **MCP自动配置**: 会话启动时自动创建`~/.claude/mcp.json`，确保MCP连接 (#1100, #1106)
+
+### 修复
+- **钩子lib/目录**: session-start现在随钩子文件一起复制`lib/`，修复HUD状态更新 (#1102, #1103)
+- **mcp.json缺失**: 修复插件安装后MCP工具不可用的问题 (#1100, #1106)
+
 ## [5.1.2] - 2026-03-29
 
 ### 新增
diff --git a/apps/mcp-server/package.json b/apps/mcp-server/package.json
index 03c36138..499eaa93 100644
--- a/apps/mcp-server/package.json
+++ b/apps/mcp-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codingbuddy",
-  "version": "5.1.2",
+  "version": "5.1.3",
   "description": "Multi-AI Rules MCP Server - One source of truth for AI coding rules across all AI assistants",
   "author": "JeremyDev87",
   "license": "MIT",
diff --git a/apps/mcp-server/src/shared/version.ts b/apps/mcp-server/src/shared/version.ts
index 040d5bba..5539a9a0 100644
--- a/apps/mcp-server/src/shared/version.ts
+++ b/apps/mcp-server/src/shared/version.ts
@@ -2,4 +2,4 @@
  * Single source of truth for the runtime package version.
  * Updated automatically by scripts/bump-version.sh on each release.
  */
-export const VERSION = '5.1.2';
+export const VERSION = '5.1.3';
diff --git a/packages/claude-code-plugin/.claude-plugin/plugin.json b/packages/claude-code-plugin/.claude-plugin/plugin.json
index 72a2ffef..3e2aa97f 100644
--- a/packages/claude-code-plugin/.claude-plugin/plugin.json
+++ b/packages/claude-code-plugin/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "codingbuddy",
-  "version": "5.1.2",
+  "version": "5.1.3",
   "description": "PLAN/ACT/EVAL workflow with auto-detection, specialist agents, and reusable skills for systematic TDD development",
   "author": {
     "name": "JeremyDev87",
diff --git a/packages/claude-code-plugin/README.md b/packages/claude-code-plugin/README.md
index 6df65a14..003b9ee4 100644
--- a/packages/claude-code-plugin/README.md
+++ b/packages/claude-code-plugin/README.md
@@ -2,7 +2,7 @@
 
 # CodingBuddy Claude Code Plugin
 
-> Version 5.1.2
+> Version 5.1.3
 
 Multi-AI Rules for consistent coding practices - PLAN/ACT/EVAL workflow, specialist agents, and reusable skills for systematic development.
 
diff --git a/packages/claude-code-plugin/package.json b/packages/claude-code-plugin/package.json
index 982ac50e..461309aa 100644
--- a/packages/claude-code-plugin/package.json
+++ b/packages/claude-code-plugin/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codingbuddy-claude-plugin",
-  "version": "5.1.2",
+  "version": "5.1.3",
   "description": "Claude Code Plugin for CodingBuddy - PLAN/ACT/EVAL workflow, specialist agents, and reusable skills",
   "author": "JeremyDev87",
   "license": "MIT",
@@ -49,7 +49,7 @@
     "test:coverage": "vitest run --coverage"
   },
   "peerDependencies": {
-    "codingbuddy": "^5.1.2"
+    "codingbuddy": "^5.1.3"
   },
   "peerDependenciesMeta": {
     "codingbuddy": {
diff --git a/packages/rules/package.json b/packages/rules/package.json
index 08a6c4ef..c0cbf699 100644
--- a/packages/rules/package.json
+++ b/packages/rules/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codingbuddy-rules",
-  "version": "5.1.2",
+  "version": "5.1.3",
   "description": "AI coding rules for consistent practices across AI assistants",
   "main": "index.js",
   "types": "index.d.ts",
diff --git a/yarn.lock b/yarn.lock
index 5983e04f..03e1c631 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5521,7 +5521,7 @@ __metadata:
     typescript: "npm:5.9.3"
     vitest: "npm:4.0.17"
   peerDependencies:
-    codingbuddy: ^5.1.2
+    codingbuddy: ^5.1.3
   peerDependenciesMeta:
     codingbuddy:
       optional: true