docs: map existing codebase with PAUL

- stack.md - PrestaShop 1.7.x, PHP, Smarty, SCSS, modules
- architecture.md - MVC + hooks, override mechanism, CQRS in src/
- structure.md - Directory layout, key file locations
- conventions.md - PHP/Smarty/SCSS/JS conventions, PS patterns
- testing.md - No automated tests in custom modules
- integrations.md - Allegro, Empik, BaseLinker, shipping, payments
- concerns.md - Override fragility, EOL risk, missing CI/CD
- db_schema.md - Custom tables, modified core tables

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

.paul/config.md

@@ -0,0 +1,33 @@
+# Project Config
+
+**Project:** interblue.pl
+**Created:** 2026-04-27
+
+## Project Settings
+
+```yaml
+project:
+  name: interblue.pl
+  version: 0.0.0
+```
+
+## Integrations
+
+### SonarQube
+
+```yaml
+sonarqube:
+  enabled: false
+  reason: "User declined during init"
+```
+
+## Preferences
+
+```yaml
+preferences:
+  auto_commit: false
+  verbose_output: false
+```
+
+---
+*Config created: 2026-04-27*