Update documentation for v1.4.0 CI/CD release process

- README: Update automated releases section with submodule info
- README: Update file structure with .gitea/workflows and submodule
- README: Add v1.4.0 changelog entry
- CLAUDE.md: Update version to 1.4.0, roadmap to 1.4.1
- CLAUDE.md: Rewrite release process for CI/CD workflow
- CLAUDE.md: Add git submodule documentation
- CLAUDE.md: Add v1.4.0 session history

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -42,14 +42,17 @@ A powerful WooCommerce plugin that adds tier pricing and package pricing functio
 
 ### Automated Releases
 
-This project uses a Gitea CI/CD pipeline for automated releases. When a version tag (e.g., `v1.3.2`) is pushed:
+This project uses a Gitea CI/CD pipeline for automated releases. When a version tag (e.g., `v1.4.0`) is pushed:
 
-1. The pipeline validates the plugin version matches the tag
-2. Composer dependencies are installed (production only)
-3. Translation files are compiled
-4. A release package is created with proper exclusions
-5. SHA256 checksum is generated
-6. Release is published to Gitea with changelog notes
+1. Code is checked out with git submodules (dependencies bundled)
+2. The pipeline validates the plugin version matches the tag
+3. Composer dependencies are installed (production only)
+4. Translation files are compiled (.po → .mo)
+5. A release package is created with proper exclusions
+6. SHA256 checksum is generated
+7. Release is published to Gitea with changelog notes extracted from CHANGELOG.md
+
+The `magdev/wc-licensed-product-client` library is bundled as a git submodule to avoid private repository authentication during CI/CD.
 
 ## Configuration
 
@@ -122,7 +125,9 @@ When editing a product, scroll to the **Product data** panel:
 
 ```
 wc-tier-and-package-prices/
-├── wc-tier-and-package-prices.php    # Main plugin file (v1.3.1)
+├── wc-tier-and-package-prices.php    # Main plugin file (v1.4.0)
+├── .gitea/workflows/
+│   └── release.yml                   # CI/CD release pipeline
 ├── includes/
 │   ├── class-wc-tpp-admin.php        # Admin settings integration
 │   ├── class-wc-tpp-settings.php     # WooCommerce settings page
@@ -149,7 +154,8 @@ wc-tier-and-package-prices/
 │   ├── wc-tier-package-prices.pot    # Translation template
 │   ├── wc-tier-package-prices-*.po   # Translation sources
 │   └── wc-tier-package-prices-*.mo   # Compiled translations
-├── vendor/                            # Composer dependencies (Twig)
+├── vendor/                            # Composer dependencies
+│   └── magdev/wc-licensed-product-client/ # License client (git submodule)
 ├── CHANGELOG.md                       # Complete version history
 ├── INSTALLATION.md                    # Installation guide
 ├── QUICKSTART.md                      # Quick start guide
@@ -195,18 +201,25 @@ This plugin is licensed under the GPL v2 or later.
 
 ## Changelog
 
+### Version 1.4.0 - 2026-01-29
+
+__Current Release__ - CI/CD Release Pipeline
+
+- __New__: Gitea CI/CD release pipeline for automated builds and releases
+- __New__: Git submodule for `magdev/wc-licensed-product-client` library
+- __Changed__: Composer now uses path repository for bundled license client
+- __DevOps__: Automated version validation, translation compilation, and release publishing
+
+See [CHANGELOG.md](CHANGELOG.md) for complete details.
+
 ### Version 1.3.1 - 2026-01-27
 
-__Current Release__ - Secure License Client
+Secure License Client
 
 - __Changed__: Switched to `SecureLicenseClient` with HMAC-SHA256 response signature verification
 - __New__: Server Secret configuration field for secure communication with license server
-- __New__: Rate limit exception handling with retry time display
-- __New__: Signature verification and URL validation error handling
 - __Security__: Response signatures verified using HMAC-SHA256 with license-specific derived keys
 
-See [CHANGELOG.md](CHANGELOG.md) for complete details.
-
 ### Version 1.3.0 - 2026-01-25
 
 __Breaking Changes__ - PHP 8.3+ Required