Add configuration for cron key and document code style conventions

- Added cron key to config.php for scheduled tasks.
- Created code_style_and_conventions.md to outline PHP version, file naming, DI pattern, controller wiring, Medoo ORM pitfalls, test conventions, caching, and database structure.
- Added project_overview.md detailing the purpose, tech stack, architecture, entry points, and key classes of the shopPRO project.
- Introduced suggested_commands.md for testing and system utilities commands.
- Added task_completion_checklist.md for a structured approach to completing tasks.
- Included .DS_Store files in autoload and templates directories for macOS compatibility.

.serena/memories/code_style_and_conventions.md

@@ -0,0 +1,47 @@
+# Code Style and Conventions
+
+## PHP Version
+PHP 7.4 — no PHP 8.0+ features allowed.
+
+## File Naming
+- New classes: `ClassName.php` (no prefix)
+- Legacy classes: `class.ClassName.php` (leave until migrated)
+
+## DI Pattern (all new code)
+```php
+class ExampleRepository {
+    private $db;
+    public function __construct($db) {
+        $this->db = $db;
+    }
+    public function find(int $id): ?array {
+        return $this->db->get('pp_table', '*', ['id' => $id]);
+    }
+}
+```
+
+## Controller Wiring
+- Admin: `admin\App::getControllerFactories()`
+- Frontend: `front\App::getControllerFactories()`
+- API: `api\ApiRouter::getControllerFactories()`
+
+## Medoo ORM Pitfalls
+- `$mdb->delete($table, $where)` takes 2 arguments, NOT 3
+- `$mdb->get()` returns `null` when no record, NOT `false`
+- After `$mdb->insert()`, check `$mdb->id()` to confirm success
+
+## Test Conventions
+- Extend `PHPUnit\Framework\TestCase`
+- Mock Medoo: `$this->createMock(\medoo::class)`
+- AAA pattern: Arrange, Act, Assert
+- Mirror source structure: `tests/Unit/Domain/{Module}/{Class}Test.php`
+
+## Caching
+- Redis via `\Shared\Cache\CacheHandler`
+- Key pattern: `shop\product:{id}:{lang}:{permutation_hash}`
+- Default TTL: 86400 (24h)
+- Data serialized — use `unserialize()` after `get()`
+
+## Database
+- Table prefix: `pp_`
+- Key tables: `pp_shop_products`, `pp_shop_orders`, `pp_shop_categories`, `pp_shop_clients`

.serena/memories/project_overview.md

@@ -0,0 +1,65 @@
+# shopPRO — Project Overview
+
+## Purpose
+shopPRO is a PHP e-commerce platform with an admin panel, customer-facing storefront, and REST API.
+
+## Tech Stack
+- **Language**: PHP 7.4 (production runs PHP < 8.0 — do NOT use PHP 8.0+ syntax!)
+- **ORM**: Medoo (`$mdb` global, injected via DI in new code)
+- **Caching**: Redis via `\Shared\Cache\CacheHandler`
+- **Testing**: PHPUnit 9.6 via `phpunit.phar`
+- **Frontend**: Custom template engine (`\Shared\Tpl\Tpl`)
+- **Database**: MySQL with `pp_` table prefix
+- **Platform**: Windows (development), Linux (production)
+
+## PHP 7.4 Constraint — CRITICAL
+Do NOT use any PHP 8.0+ features:
+- No `match` expressions (use ternary/if-else)
+- No named arguments
+- No union types (`int|string`)
+- No `str_contains()`, `str_starts_with()`, `str_ends_with()`
+
+## Architecture
+Domain-Driven Design with Dependency Injection.
+
+### Layers
+1. **Domain** (`autoload/Domain/`) — Business logic repositories, 27 modules
+2. **Admin** (`autoload/admin/`) — Admin panel controllers, support, validation, view models
+3. **Frontend** (`autoload/front/`) — Customer-facing controllers and views
+4. **API** (`autoload/api/`) — REST API controllers
+5. **Shared** (`autoload/Shared/`) — Cache, Email, Helpers, Html, Image, Tpl
+
+### Domain Modules
+Article, Attribute, Banner, Basket, Cache, Category, Client, Coupon, Dashboard, Dictionaries, Integrations, Languages, Layouts, Newsletter, Order, Pages, PaymentMethod, Producer, Product, ProductSet, Promotion, Scontainers, Settings, ShopStatus, Transport, Update, User
+
+### Entry Points
+- `index.php` — Frontend
+- `admin/index.php` — Admin panel
+- `api.php` — REST API
+- `ajax.php` — Frontend AJAX
+- `admin/ajax.php` — Admin AJAX
+- `cron.php` — CRON jobs
+
+### Namespace Conventions (case-sensitive on Linux!)
+- `\Domain\` → `autoload/Domain/` (uppercase D)
+- `\admin\Controllers\` → `autoload/admin/Controllers/` (lowercase a)
+- `\Shared\` → `autoload/Shared/`
+- `\front\` → `autoload/front/`
+- `\api\` → `autoload/api/`
+
+### Autoloader
+Custom autoloader (not Composer at runtime). Tries:
+1. `autoload/{namespace}/class.{ClassName}.php` (legacy)
+2. `autoload/{namespace}/{ClassName}.php` (PSR-4 style)
+
+### Key Classes
+- `\admin\App` — Admin router
+- `\front\App` — Frontend router
+- `\front\LayoutEngine` — Frontend layout engine
+- `\Shared\Helpers\Helpers` — Utility methods
+- `\Shared\Tpl\Tpl` — Template engine
+- `\Shared\Cache\CacheHandler` — Redis cache
+- `\api\ApiRouter` — REST API router
+
+## Test Suite
+765 tests, 2153 assertions. Tests mirror source structure in `tests/Unit/`.

.serena/memories/suggested_commands.md

@@ -0,0 +1,41 @@
+# Suggested Commands
+
+## Testing
+```bash
+# Full test suite (recommended, PowerShell)
+./test.ps1
+
+# Specific test file
+./test.ps1 tests/Unit/Domain/Product/ProductRepositoryTest.php
+
+# Specific test method
+./test.ps1 --filter testGetQuantityReturnsCorrectValue
+
+# Via composer
+composer test
+```
+
+## System Utilities (Windows with Git Bash)
+```bash
+# Use Unix-style commands (Git Bash shell)
+ls          # list directory
+grep -r     # search content (prefer Serena tools instead)
+git status  # git operations
+git log --oneline -10
+git diff
+git add <file>
+git commit -m "message"
+git push
+```
+
+## Development
+```bash
+# No build step — PHP is interpreted
+# No linting/formatting tool configured
+# Entry points are served via web server (XAMPP)
+```
+
+## PHP binary
+```
+C:\xampp\php\php.exe
+```

.serena/memories/task_completion_checklist.md

@@ -0,0 +1,25 @@
+# Task Completion Checklist
+
+When user says "KONIEC PRACY", execute in order:
+
+1. **Run tests** — `./test.ps1`
+2. **Update documentation if needed**:
+   - `docs/DATABASE_STRUCTURE.md`
+   - `docs/PROJECT_STRUCTURE.md`
+   - `docs/FORM_EDIT_SYSTEM.md`
+   - `docs/CHANGELOG.md`
+   - `docs/TESTING.md`
+3. **SQL migrations** (if DB changes): place in `migrations/{version}.sql`
+   - NOT in `updates/` — build script reads from `migrations/` automatically
+4. **Commit** changes
+5. **Push** to remote
+
+## Key Documentation Files
+- `docs/MEMORY.md` — project memory, known issues
+- `docs/PROJECT_STRUCTURE.md` — architecture
+- `docs/DATABASE_STRUCTURE.md` — full DB schema
+- `docs/TESTING.md` — test suite guide
+- `docs/FORM_EDIT_SYSTEM.md` — form system
+- `docs/CHANGELOG.md` — version history
+- `docs/API.md` — REST API docs
+- `docs/UPDATE_INSTRUCTIONS.md` — update packages

config.php

@@ -17,4 +17,6 @@ $config['debug']['apilo'] = true;
 
 $config['trustmate']['enabled'] = true;
 $config['trustmate']['uid'] = '34eb36ba-c715-4cdc-8707-22376c9f14c7';
+
+$config['cron_key'] = 'Gi7FzWtkry19hZ1BqT1LKEWfwokQpigh';
 ?>