Update CLAUDE.md with v1.4.1 session learnings

Added marketing texts creation and key learnings.

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

CLAUDE.md

@@ -1321,6 +1321,23 @@ The plugin architecture is solid and well-tested. Most bugs arise from:
 - `CHANGELOG.md` - v1.4.1 release notes
 - `CLAUDE.md` - Updated version and session history
 
+**Additional:**
+
+- Created MARKETING.md with marketing texts:
+  - Short descriptions (max 150 chars) in EN, DE, FR, IT
+  - Full product descriptions in EN, DE, FR, IT
+  - Feature highlights (bullet points) in EN, DE, FR, IT
+  - SEO keywords in EN, DE, FR, IT
+  - File added to .gitignore (not for public distribution)
+
+**Key Learnings:**
+
+- The `/create-marketing` skill creates MARKETING.md with multilingual marketing texts
+- Marketing files should be added to .gitignore to keep them out of the release package
+- The update checker uses the existing license server endpoint `/wp-json/wc-licensed-product/v1/update-check`
+- Localhost bypass patterns include: localhost, 127.0.0.1, ::1, `*.localhost`, `*.local`, `*.test`, `*.example`, `*.invalid`, and private IP ranges
+- Self-licensing bypass compares normalized domains (lowercase, without www prefix)
+
 ---
 
 Always refer to this document when starting work on this project. Good luck!