Update session history with v0.0.2 learnings

- Remove completed v0.0.2 from roadmap
- Document architecture decisions and learnings

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

CLAUDE.md

@@ -29,12 +29,6 @@ This project is proudly **"vibe-coded"** using Claude.AI - the entire codebase w
 
 No known bugs at the moment
 
-### Version 0.0.2
-
-- Create an object oriented client-library for the API endpoints
-- Add Logging and caching
-- Keep in mind, that the security related parts of the client MUST be obfuscatable while keeping the developer experience nice. Do not obfuscate it yet.
-
 ## Technical Stack
 
 - **Language:** PHP 8.3.x
@@ -114,3 +108,24 @@ When editing CLAUDE.md or other markdown files, follow these rules to avoid lint
 - OpenAPI spec (tmp/openapi.json) defines 3 POST endpoints: `/validate`, `/status`, `/activate`
 - API base path: `{baseUrl}/wp-json/wc-licensed-product/v1`
 - Git remote configured via SSH: `ssh://git@src.bundespruefstelle.ch:2022/magdev/wc-licensed-product-client.git`
+
+### 2026-01-22 - Version 0.0.2
+
+**Completed:**
+
+- Created `LicenseClientInterface` as public API contract
+- Implemented `LicenseClient` with PSR-3 logging and PSR-6 caching support
+- Added DTO classes: `LicenseInfo`, `LicenseStatus`, `ActivationResult`
+- Added `LicenseState` enum for license status values (active, inactive, expired, revoked)
+- Created comprehensive exception hierarchy (10 exception classes)
+- Added PSR dependencies: `psr/log` ^3.0, `psr/cache` ^3.0, `psr/http-client` ^1.0
+- Updated README with usage examples for basic usage, logging, caching, and exception handling
+- Merged dev to main branch
+
+**Learnings:**
+
+- Architecture follows separation: Interface (public API) → Client (implementation) → DTOs (data) → Exceptions (errors)
+- Cache keys use SHA256 hashes of license keys to avoid exposing sensitive data
+- `LicenseClient` designed for obfuscation: all sensitive logic contained in single class
+- Symfony HttpClient works well with PSR interfaces via `symfony/http-client-contracts`
+- Keep a Changelog format allows duplicate headings per version (MD024 warning can be ignored)