Add product carousel module with template and database structure

- Created `pp_carousel.tpl` for rendering product carousel with Swiper integration.
- Added `plan.md` detailing module architecture, database schema, and implementation steps.
- Initialized log files for development and production environments.

.claude/settings.local.json

@@ -0,0 +1,10 @@
+{
+  "permissions": {
+    "allow": [
+      "mcp__serena__activate_project",
+      "mcp__serena__list_dir",
+      "mcp__serena__read_file",
+      "mcp__serena__find_file"
+    ]
+  }
+}