refactor: migrate vendor APIs to token-based context and consolidate architecture

## Vendor-in-Token Architecture (Complete Migration)
- Migrate all vendor API endpoints from require_vendor_context() to token_vendor_id
- Update permission dependencies to extract vendor from JWT token
- Add vendor exceptions: VendorAccessDeniedException, VendorOwnerOnlyException,
  InsufficientVendorPermissionsException
- Shop endpoints retain require_vendor_context() for URL-based detection
- Add AUTH-004 architecture rule enforcing vendor context patterns
- Fix marketplace router missing /marketplace prefix

## Exception Pattern Fixes (API-003/API-004)
- Services raise domain exceptions, endpoints let them bubble up
- Add code_quality and content_page exception modules
- Move business logic from endpoints to services (admin, auth, content_page)
- Fix exception handling in admin, shop, and vendor endpoints

## Tailwind CSS Consolidation
- Consolidate CSS to per-area files (admin, vendor, shop, platform)
- Remove shared/cdn-fallback.html and shared/css/tailwind.min.css
- Update all templates to use area-specific Tailwind output files
- Remove Node.js config (package.json, postcss.config.js, tailwind.config.js)

## Documentation & Cleanup
- Update vendor-in-token-architecture.md with completed migration status
- Update architecture-rules.md with new rules
- Move migration docs to docs/development/migration/
- Remove duplicate/obsolete documentation files
- Merge pytest.ini settings into pyproject.toml

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Makefile

@@ -1,7 +1,7 @@
 # Wizamart Multi-Tenant E-Commerce Platform Makefile
 # Cross-platform compatible (Windows & Linux)
 
-.PHONY: install install-dev install-docs install-all dev test test-coverage lint format check docker-build docker-up docker-down clean help npm-install tailwind-dev tailwind-build arch-check arch-check-file arch-check-object
+.PHONY: install install-dev install-docs install-all dev test test-coverage lint format check docker-build docker-up docker-down clean help tailwind-install tailwind-dev tailwind-build tailwind-watch arch-check arch-check-file arch-check-object
 
 # Detect OS
 ifeq ($(OS),Windows_NT)
@@ -282,29 +282,40 @@ docs-check:
 	$(PYTHON) -m mkdocs build --strict --verbose
 
 # =============================================================================
-# FRONTEND / TAILWIND CSS
+# FRONTEND / TAILWIND CSS (Standalone CLI - No Node.js Required)
 # =============================================================================
 
-npm-install:
-	@echo "Installing npm dependencies..."
-	npm install
-	@echo "npm dependencies installed"
+# Tailwind CLI binary location
+TAILWIND_CLI := $(HOME)/.local/bin/tailwindcss
+
+tailwind-install:
+	@echo "Installing Tailwind CSS standalone CLI..."
+	@mkdir -p $(HOME)/.local/bin
+	@curl -sLO https://github.com/tailwindlabs/tailwindcss/releases/latest/download/tailwindcss-linux-x64
+	@chmod +x tailwindcss-linux-x64
+	@mv tailwindcss-linux-x64 $(TAILWIND_CLI)
+	@echo "Tailwind CLI installed: $$($(TAILWIND_CLI) --help | head -1)"
 
 tailwind-dev:
-	@echo "Building Tailwind CSS (development - all classes)..."
-	npm run tailwind:admin
-	npm run tailwind:vendor
-	@echo "Tailwind CSS built (admin + vendor)"
+	@echo "Building Tailwind CSS (development)..."
+	$(TAILWIND_CLI) -i static/admin/css/tailwind.css -o static/admin/css/tailwind.output.css
+	$(TAILWIND_CLI) -i static/vendor/css/tailwind.css -o static/vendor/css/tailwind.output.css
+	$(TAILWIND_CLI) -i static/shop/css/tailwind.css -o static/shop/css/tailwind.output.css
+	$(TAILWIND_CLI) -i static/platform/css/tailwind.css -o static/platform/css/tailwind.output.css
+	@echo "Tailwind CSS built (admin + vendor + shop + platform)"
 
 tailwind-build:
-	@echo "Building Tailwind CSS (production - purged)..."
-	npm run build
-	@echo "Tailwind CSS built for production"
+	@echo "Building Tailwind CSS (production - minified)..."
+	$(TAILWIND_CLI) -i static/admin/css/tailwind.css -o static/admin/css/tailwind.output.css --minify
+	$(TAILWIND_CLI) -i static/vendor/css/tailwind.css -o static/vendor/css/tailwind.output.css --minify
+	$(TAILWIND_CLI) -i static/shop/css/tailwind.css -o static/shop/css/tailwind.output.css --minify
+	$(TAILWIND_CLI) -i static/platform/css/tailwind.css -o static/platform/css/tailwind.output.css --minify
+	@echo "Tailwind CSS built and minified for production"
 
 tailwind-watch:
 	@echo "Watching Tailwind CSS for changes..."
 	@echo "Note: This watches admin CSS only. Run in separate terminal."
-	npx tailwindcss build static/admin/css/tailwind.css -o static/admin/css/tailwind.output.css --watch
+	$(TAILWIND_CLI) -i static/admin/css/tailwind.css -o static/admin/css/tailwind.output.css --watch
 
 # =============================================================================
 # DOCKER
@@ -425,10 +436,10 @@ help:
 	@echo "  docs-serve           - Start documentation server"
 	@echo "  docs-build           - Build documentation"
 	@echo ""
-	@echo "=== FRONTEND / TAILWIND ==="
-	@echo "  npm-install          - Install npm dependencies"
+	@echo "=== FRONTEND / TAILWIND (No Node.js Required) ==="
+	@echo "  tailwind-install     - Install Tailwind standalone CLI"
 	@echo "  tailwind-dev         - Build Tailwind CSS (development)"
-	@echo "  tailwind-build       - Build Tailwind CSS (production)"
+	@echo "  tailwind-build       - Build Tailwind CSS (production, minified)"
 	@echo "  tailwind-watch       - Watch and rebuild on changes"
 	@echo ""
 	@echo "=== DOCKER ==="