refactor: complete project restructure - clean and professional

🎯 New Structure:
- landing/ (root) - Only Makefile, .gitignore, .woodpecker.yml
- helm/ - Kubernetes deployment (with argocd inside chart)
- docker/ - Docker build configs
- peikarband/ - All source code (src, tests, assets, config, tools, docs)

✅ Changes:
- Moved Docker files: build/docker/ → docker/
- Moved Helm charts: deploy/helm/ → helm/
- Moved ArgoCD: deploy/argocd/ → helm/peikarband/argocd/
- Moved all source code to peikarband/
- Removed duplicate files (7 files)
- Removed old empty directories

🐳 Docker Fixes:
- Added npm retry configuration (fetch-retry-mintimeout, etc.)
- Added 3-attempt retry mechanism for reflex export
- Fixed ECONNREFUSED errors
- Updated paths for new structure

📦 Config Updates:
- Makefile: Updated all paths (docker/, helm/, peikarband/)
- .woodpecker.yml: Updated dockerfile and context paths
- .gitignore: Updated data/ path

🧪 Tests:
- ✓ Helm lint passes
- ✓ All paths validated
- ✓ Structure verified

📊 Result:
- Before: 20+ files in root, scattered structure
- After: 3 files + 3 directories, clean and organized
- Production-ready ✨

Makefile

@@ -44,7 +44,7 @@ install:
 	pre-commit install
 
 dev:
-	python3 -m reflex run
+	cd peikarband && python3 -m reflex run
 
 kill-dev:
 	@echo "Killing processes on ports 3000 and 8000..."
@@ -78,12 +78,12 @@ clean:
 # Docker commands
 docker-build:
 	DOCKER_BUILDKIT=$(DOCKER_BUILDKIT) docker build \
-		-f build/docker/Dockerfile \
+		-f docker/Dockerfile \
 		-t $(IMAGE_NAME):$(VERSION) \
 		-t $(IMAGE_NAME):latest \
 		--build-arg VERSION=$(VERSION) \
 		--build-arg BUILD_DATE=$(shell date -u +'%Y-%m-%dT%H:%M:%SZ') \
-		.
+		peikarband/
 
 docker-push:
 	docker tag $(IMAGE_NAME):$(VERSION) $(REGISTRY)/$(IMAGE_NAME):$(VERSION)
@@ -96,23 +96,23 @@ docker-login:
 	@docker login $(REGISTRY)
 
 docker-up:
-	docker-compose -f build/docker/docker-compose.yml up -d
+	docker-compose -f docker/docker-compose.yml up -d
 
 docker-down:
-	docker-compose -f build/docker/docker-compose.yml down
+	docker-compose -f docker/docker-compose.yml down
 
 # Helm commands
 helm-lint:
-	helm lint deploy/helm/peikarband
+	helm lint helm/peikarband
 
 helm-template:
-	helm template $(HELM_RELEASE) deploy/helm/peikarband --debug
+	helm template $(HELM_RELEASE) helm/peikarband --debug
 
 helm-package:
-	helm package deploy/helm/peikarband --destination .
+	helm package helm/peikarband --destination .
 
 helm-install:
-	helm install $(HELM_RELEASE) deploy/helm/peikarband \
+	helm install $(HELM_RELEASE) helm/peikarband \
 		--namespace $(NAMESPACE) \
 		--create-namespace \
 		--set image.repository=$(REGISTRY)/$(IMAGE_NAME) \
@@ -120,7 +120,7 @@ helm-install:
 		--wait
 
 helm-upgrade:
-	helm upgrade --install $(HELM_RELEASE) deploy/helm/peikarband \
+	helm upgrade --install $(HELM_RELEASE) helm/peikarband \
 		--namespace $(NAMESPACE) \
 		--set image.repository=$(REGISTRY)/$(IMAGE_NAME) \
 		--set image.tag=$(VERSION) \
@@ -136,8 +136,8 @@ k8s-deploy: docker-build docker-push helm-upgrade
 
 # Database
 migrate:
-	alembic -c config/alembic.ini upgrade head
+	cd peikarband && alembic -c config/alembic.ini upgrade head
 
 seed:
-	python3 tools/scripts/seed_database.py
+	cd peikarband && python3 tools/scripts/seed_database.py