docs: consolidate documentation into organized structure

- Move 12 markdown files from root to docs/ subdirectories
- Organize documentation by category:
  • docs/troubleshooting/ (1 file)  - Technical troubleshooting guides
  • docs/deployment/      (4 files) - Deployment and security documentation
  • docs/guides/          (3 files) - Feature-specific guides
  • docs/planning/        (4 files) - Planning and improvement proposals

Root directory cleanup:
- Reduced from 16 to 4 markdown files in root
- Only essential project files remain:
  • CLAUDE.md (AI instructions)
  • README.md (Main project readme)
  • CLEANUP_PLAN.md (Current cleanup plan)
  • SRC_STRUCTURE_IMPROVEMENTS.md (Structure improvements)

This improves:
✅ Documentation discoverability
✅ Logical organization by purpose
✅ Clean root directory
✅ Better maintainability

src/Application/SmartLink/Api/CreateGeoRoutingRule.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Application\SmartLink\Api;
+
+use App\Domain\SmartLink\Entities\GeoRoutingRule;
+use App\Domain\SmartLink\Repositories\GeoRoutingRuleRepository;
+use App\Domain\SmartLink\ValueObjects\SmartLinkId;
+use App\Framework\Attributes\Route;
+use App\Framework\Core\ValueObjects\CountryCode;
+use App\Framework\Http\HttpRequest;
+use App\Framework\Http\Method;
+use App\Framework\Http\Status;
+use App\Framework\Router\Result\JsonResult;
+
+final readonly class CreateGeoRoutingRule
+{
+    public function __construct(
+        private GeoRoutingRuleRepository $geoRoutingRuleRepository
+    ) {}
+
+    #[Route(path: '/api/smartlinks/{linkId}/geo-rules', method: Method::POST)]
+    public function __invoke(HttpRequest $request, string $linkId): JsonResult
+    {
+        $data = $request->parsedBody->toArray();
+
+        $geoRule = GeoRoutingRule::create(
+            linkId: SmartLinkId::fromString($linkId),
+            countryCode: CountryCode::fromString($data['country_code']),
+            destinationId: $data['destination_id'],
+            priority: $data['priority'] ?? 0
+        );
+
+        $this->geoRoutingRuleRepository->save($geoRule);
+
+        return new JsonResult([
+            'id' => $geoRule->id->toString(),
+            'link_id' => $geoRule->linkId->toString(),
+            'country_code' => $geoRule->countryCode->toString(),
+            'destination_id' => $geoRule->destinationId,
+            'priority' => $geoRule->priority,
+            'created_at' => $geoRule->createdAt->format('Y-m-d H:i:s')
+        ], Status::CREATED);
+    }
+}