feat: complete include/exclude observability, fix validation bugs, and organize tests

- Add structured logging for include/exclude operations with comprehensive event tracking
- Fix duplicate counting bug in validation API by eliminating double validation passes
- Simplify color identity validation UX by consolidating into single 'illegal' status
- Organize project structure by moving all test files to centralized code/tests/ directory
- Update documentation reflecting feature completion and production readiness
- Add validation test scripts and performance benchmarks confirming targets met
- Finalize include/exclude feature as production-ready with EDH format compliance

tests/e2e/README.md

@@ -18,7 +18,7 @@ python tests/e2e/run_e2e_tests.py --install-browsers
 
 ### Quick Smoke Test (Recommended)
 ```bash
-# Assumes server is already running on localhost:8000
+# Assumes server is already running on localhost:8080
 python tests/e2e/run_e2e_tests.py --quick
 ```
 
@@ -47,7 +47,7 @@ pytest test_web_smoke.py -v
 
 ## Environment Variables
 
-- `TEST_BASE_URL`: Base URL for testing (default: http://localhost:8000)
+- `TEST_BASE_URL`: Base URL for testing (default: http://localhost:8080)
 
 ## Test Coverage
 

tests/e2e/run_e2e_tests.py

@@ -24,7 +24,7 @@ class E2ETestRunner:
     def __init__(self):
         self.project_root = Path(__file__).parent.parent
         self.server_process = None
-        self.base_url = os.getenv('TEST_BASE_URL', 'http://localhost:8000')
+        self.base_url = os.getenv('TEST_BASE_URL', 'http://localhost:8080')
         
     def start_dev_server(self):
         """Start the development server"""
@@ -36,7 +36,7 @@ class E2ETestRunner:
             "-m", "uvicorn",
             "code.web.app:app",
             "--host", "0.0.0.0",
-            "--port", "8000",
+            "--port", "8080",
             "--reload"
         ]
         

tests/e2e/test_web_smoke.py

@@ -9,7 +9,7 @@ import os
 
 class TestConfig:
     """Test configuration"""
-    BASE_URL = os.getenv('TEST_BASE_URL', 'http://localhost:8000')
+    BASE_URL = os.getenv('TEST_BASE_URL', 'http://localhost:8080')
     TIMEOUT = 30000  # 30 seconds
     
     # Test data